Fluke PG7102, PG7202, PG7302, PG7601 User's Manual

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PG7000™ Piston Gauges

PG7102™, PG7202™,

™

PG7302

Operation and Maintenance Manual

, PG7601™

(Ver. 3.0 and Higher)

 Warning

High pressure liquids an d gases a re pot ential ly haz ardous. En erg y stored in th ese liquids and gases can be released unexpectedly and with extreme force. High pressure systems sh ould b e assemb led and op erated only by p ersonnel w ho hav e been instructed in proper safety practices.

form or by any means, electronic or m echanical, for any purpose, without the express written permission of Fluke Calibration, 4765 East Beautiful Lane, Phoenix, Arizona 85044-5318 USA.

Fluke Calibration makes sincere efforts to ensure the accuracy and quality of its published materials; however, no warranty, expressed or implied, is provided. Fluke Calibration disclaims any responsibility or liability for any direct or indirect damages resulting from the use of the information in this manual or products described in it. Mention of any product or brand does not constitute an endorsement by Fluke Calibration of that product or brand. This manual was originally composed in E ngl ish and was subsequently translated into other languages. The fidelity of the translation cannot be guaranteed. In case of conflict between the English version and other language versions, the English version predominates.

Products described in this manual are manufactured under international patents and one or m ore of the following U.S. patents: 6,701,791, 5,142,483, 5,257,640, 5,331,838, 5,445,035. Other U.S. and international patents pending.

Fluke Calibration, FCAL, DH, DHI, PG7000, PG7102, PG7202, PG7302, PG7601, COMPASS, CalTool are trademarks, registered and otherwise, of Fluke Corporation.

LabVIEW is registered trademark of National Instruments Corporation. Swagelok is a registered trademark of the Swagelok Company.

Document No. 3152117 110325 Printed in the USA

Table of Contents ................................................................. III

Tables ................................................................................ VII

Figures .............................................................................. VIII

About This Manual ................................................................ IX

1. Introduction ..................................................................... 1

1.1 Product Overview ................................................................................................................................... 1

1.2 Specifications ......................................................................................................................................... 2

1.2.1 General Specifications ............................................................................................................................. 2

1.2.1.1 Embedded Features ............................................................................................................................... 3

1.2.1.2 Ambient and Instrument Condition Measurements ................................................................................. 4

1.2.2 Piston-Cylinder Modules ......................................................................................................................... 5

1.2.2.1 PC-7100/7600 ........................................................................................................................................ 5

1.2.2.2 PC-7200 ................................................................................................................................................. 6

1.2.2.3 PC-7300 ................................................................................................................................................. 7

1.2.3 Mass Sets ................................................................................................................................................. 7

1.2.4 Pressure Measurements .......................................................................................................................... 8

1.2.4.1 PC-7100/7600 ........................................................................................................................................ 8

1.2.4.2 PC-7200 ................................................................................................................................................. 9

1.2.4.3 PC-7300 ................................................................................................................................................. 9

1.3 Terminal and Platform Front and Rear Panels ................................................................................... 10

1.3.1 Terminal Front and Rear Panels ............................................................................................................ 10

1.3.1.1 PG Terminal Front Panel ...................................................................................................................... 10

1.3.1.2 PG terminal Rear Panel ....................................................................................................................... 11

1.3.2 Platform Rear Panels ............................................................................................................................. 11

2. Installation ..................................................................... 13

2.1 Unpacking And Inspection .................................................................................................................. 13

2.1.1 Removing from Packaging .................................................................................................................... 13

2.1.1.1 Platform ............................................................................................................................................... 13

2.1.1.2 Mass Set .............................................................................................................................................. 13

2.1.1.3 Piston-Cylinder Module(s) .................................................................................................................... 14

2.1.1.4 Automated Mass Handler ..................................................................................................................... 14

2.1.2 Inspecting Contents ............................................................................................................................... 14

2.1.2.1 Platform ............................................................................................................................................... 14

2.1.2.2 Mass Set .............................................................................................................................................. 19

2.1.2.3 Piston-Cylinder Module(s) .................................................................................................................... 21

2.2 Site Requirements ................................................................................................................................ 22

2.3 Setup ..................................................................................................................................................... 23

2.3.1 Preparing for Operation ......................................................................................................................... 23

2.3.1.1 Setting Up the Platform ........................................................................................................................ 23

2.3.1.2 System Pressure Interconnections ....................................................................................................... 24

2.3.1.3 Setting Up a Mass Set .......................................................................................................................... 24

2.3.2 installing a Piston-Cylinder Module into the Platform ......................................................................... 25

2.3.3 Switching a PG7202 Between Gas Operation and Oil Operation ........................................................ 26

PG7000™ OPERATION AND MAINTENANCE MANUAL

2.4 Power Up and Verification ................................................................................................................... 28

2.4.1 Powe r UP ................................................................................................................................................ 28

2.4.2 Check that On-Board Piston-Cylinder Module and Mass Set Information are Correct ...................... 28

2.4.3 Set Local Gravity Value ......................................................................................................................... 28

2.4.4 Setup Pressure Equation Variable Input Sources ................................................................................ 28

2.4.5 Check Proper Operation of Ambient Condition Measurements .......................................................... 29

2.4.6 apply pressure to THE piston-cylinder module .................................................................................... 29

2.4.7 Check Proper Behavior of Motorized Piston Rotation ......................................................................... 30

2.4.8 Check Proper Operation of Piston Behavior Measurements ............................................................... 30

2.4.8.1 Verify Vacuum Reference (PG7601 Only) ............................................................................................ 30

2.4.9 Check Automated Pressure Generation (If Present) ............................................................................ 31

2.4.10 Check/Set Security Level ....................................................................................................................... 31

2.4.11 Additional Precautions to Take Before Making Pressure Measurements .......................................... 31

2.5 Short Term Storage .............................................................................................................................. 32

3. General Operation ........................................................... 33

3.1 Fundamental Operating Principles ..................................................................................................... 33

3.1.1 Gas Operated, Liquid Lubricated Piston-Cylinder Operating Principle (PG7202) .............................. 34

3.2 Keypad Layout And Protocol .............................................................................................................. 35

3.3 Sounds .................................................................................................................................................. 36

3.4 Pressure Ready/Not Read y Indication ................................................................................................ 36

3.4.1 Piston Position Ready/Not Ready ......................................................................................................... 36

3.4.2 Piston Rotation Ready/Not Ready ......................................................................................................... 37

3.4.3 Vacuum Reference Ready/Not Ready (PG7601 Only) .......................................................................... 38

3.5 Pis to n Po sition ..................................................................................................................................... 38

3.6 Ma ss Loading Protocol ........................................................................................................................ 39

3.7 Main Run Screen .................................................................................................................................. 42

3.8 General Function/Menu Flow Chart .................................................................................................... 43

3.9 Direct Function Keys............................................................................................................................ 44

3.9.1 Direct Function Keys Summary ............................................................................................................ 44

3.9.2 [P-C] ........................................................................................................................................................ 45

3.9.3 [UNIT] ...................................................................................................................................................... 46

3.9.3.1 Customizing Pressure Units Available Under the UNIT Function .......................................................... 47

3.9.4 [MODE] .................................................................................................................................................... 48

3.9.4.1 Differential Measurement Mode (PG7601 Only) ................................................................................... 49

3.9.4.2 HIGH LINE Differential measurement mode (PG7102, PG7302 and PG7202 ONLY) ........................... 56

3.9.5 [SYSTEM] ................................................................................................................................................ 68

3.9.5.1 First System Run Screen...................................................................................................................... 68

3.9.5.2 Second System Run Screen ................................................................................................................ 69

3.9.6 [AMBIENT] .............................................................................................................................................. 70

3.9.7 [HEAD] .................................................................................................................................................... 71

3.9.8 [ROTATE] ................................................................................................................................................ 73

3.9.8.1 <2PRE-DECEL> .................................................................................................................................. 74

3.9.9 [GEN] (OPTIONAL) ................................................................................................................................. 75

3.9.9.1 <2target>.............................................................................................................................................. 76

3.9.9.2 <3raise> ............................................................................................................................................... 77

3.9.9.3 <4UL> .................................................................................................................................................. 77

3.9.9.4 <5tol> ................................................................................................................................................... 77

3.9.9.5 <6refloat> ............................................................................................................................................. 78

3.9.9.6 <7Vol> ................................................................................................................................................. 78

3.9.10 [RES] ....................................................................................................................................................... 79

3.9.11 [ENTER /SET P] from Run Scre e n .......................................................................................................... 80

3.9.11.1 [ENTER/SET P] in Pressure to Mass M ode .......................................................................................... 81

3.9.11.2 [ENTER/SET P] in Mass to Pressure Mode .......................................................................................... 83

3.9.11.3 Commands for Zero Pressure, Ending a Test ....................................................................................... 83

3.9.12 [P OR M] .................................................................................................................................................. 84

3.9.13 [ ] and [ ], [←] ................................................................................................................................. 84

3.10 [SETUP] Menu ....................................................................................................................................... 86

3.10.1 <1select> ................................................................................................................................................ 87

3.10.2 <2view> ................................................................................................................................................... 88

3.10.3 <3edit> .................................................................................................................................................... 89

TABLE OF CONTENTS

3.11 [SPECIAL] Menu ................................................................................................................................... 91

3.11.1 <1PC/MS> ............................................................................................................................................... 92

3.11.1.1 Create Piston-Cylinder Module ............................................................................................................. 93

3.11.1.2 Edit Piston-Cylinder Module ................................................................................................................. 95

3.11.1.3 View Piston-Cylinder Module ................................................................................................................ 95

3.11.1.4 Delete Piston-Cylinder Module ............................................................................................................. 96

3.11.1.5 Select the active piston-cylinder module ............................................................................................... 96

3.11.1.6 Add Mass Set ....................................................................................................................................... 97

3.11.1.7 Edit mass set ......................................................................................................................................101

3.11.1.8 View Mass Set ....................................................................................................................................101

3.11.1.9 Delete Mass Set ..................................................................................................................................101

3.11.1.10 Select Mass Set ..................................................................................................................................102

3.11.1.11 Add Mass Loading Bell ........................................................................................................................102

3.11.1.12 Edit Mass Loading Bell ........................................................................................................................104

3.11.1.13 View mass loading bell ........................................................................................................................104

3.11.1.14 delete mass loading bell ......................................................................................................................104

3.11.1.15 Select Mass Loading Bell ....................................................................................................................105

3.11.2 <2presu> ................................................................................................................................................105

3.11.3 <3HEAD> ...............................................................................................................................................105

3.11.3.1 <3head>, <1fluid> ...............................................................................................................................106

3.11.3.2 <3head>, <2unit> ................................................................................................................................106

3.11.3.3 <3head>, <3atm> ................................................................................................................................107

3.11.3.4 <3head>, <4piston> ............................................................................................................................107

3.11.4 <4Prefs> .................................................................................................................................................108

3.11.4.1 <4PREFS>, <1ScrSVR> .....................................................................................................................108

3.11.4.2 <4PREFS>, <2Sound> ........................................................................................................................108

3.11.4.3 <4PREFS>, <3Time> ..........................................................................................................................109

3.11.4.4 <4PREFS>, <4ID> ..............................................................................................................................109

3.11.4.5 <4prefs>, <5level> ..............................................................................................................................110

3.11.5 <5remote> ..............................................................................................................................................113

3.11.5.1 COM1, COM2 AND COM3 (RS232) ....................................................................................................113

3.11.5.2 IEEE-488.............................................................................................................................................113

3.11.5.3 RS232 Self Test ..................................................................................................................................114

3.11.5.4 External Barometer (RPM) Communications (COM2) ..........................................................................114

3.11.5.5 External Vacuum Gauge Communications (COM2) (PG7601 Only) ....................................................116

3.11.6 <6GL>.....................................................................................................................................................118

3.11.7 <7cal>.....................................................................................................................................................119

3.11.8 <8AMH> .................................................................................................................................................119

3.11.8.1 <2control>, <1up/down> ......................................................................................................................120

3.11.8.2 <2control>, <2discreet> .......................................................................................................................120

3.11.8.3 <2control>, <3loadall> .........................................................................................................................120

3.11.8.4 <2control>, <4unloadall> .....................................................................................................................121

3.11.9 <9reset> .................................................................................................................................................121

3.11.9.1 <9reset>, <1sets> ...............................................................................................................................121

3.11.9.2 <9reset>, <2units> ..............................................................................................................................122

3.11.9.3 <9reset>, <3com> ...............................................................................................................................122

3.11.9.4 <9reset>, <4cal> .................................................................................................................................122

3.11.9.5 <9RESET>, <5SETUPS> ....................................................................................................................123

3.11.9.6 <9reset>, <6all> ..................................................................................................................................123

4. Remote Operation ......................................................... 125

4.1 Overview ............................................................................................................................................. 125

4.2 Interfacing ........................................................................................................................................... 125

4.2.1 RS232 Interface .....................................................................................................................................125

4.2.1.1 COM1 .................................................................................................................................................125

4.2.1.2 COM2 AND COM3 ..............................................................................................................................126

4.2.2 IEEE-488 (GPIB) .....................................................................................................................................126

4.3 Commands .......................................................................................................................................... 127

4.3.1 Command Syntax ..................................................................................................................................127

4.3.2 COMMAND summary ............................................................................................................................127

4.3.3 Error Messages .....................................................................................................................................129

4.3.3.1 AMH errors ..........................................................................................................................................130

4.3.4 Command Descriptions ........................................................................................................................130

4.3.4.1 IEEE Std. 488.2 Common and Status Commands ...............................................................................130

4.3.4.2 PG7000 commands.............................................................................................................................133

4.4 Statu s System ..................................................................................................................................... 160

4.4.1 Status Reporting System ......................................................................................................................160

4.4.1.1 Status Byte Register............................................................................................................................160

4.4.1.2 Standard Event Register .....................................................................................................................161

PG7000™ OPERATION AND MAINTENANCE MANUAL

4.5 High Line Differential Mode Programming Examples ..................................................................... 162

4.5.1 Recommended sequence for a host program to remotely set a new high line

pressure and enable high line differential mode .................................................................................162

4.5.2 Recommended Sequence for a Host Program to Remotely Enable

High Line Differential Mode using the Last Line Pressure Setting ....................................................164

5. Maintenance, Adjustments and Calibration ...................... 165

5.1 Introduction ........................................................................................................................................ 165

5.2 Platform ............................................................................................................................................... 166

5.2.1 Calibration/Adjustment of On-Board Measurement Funct ions ..........................................................166

5.2.1.1 Principles ............................................................................................................................................166

5.2.1.2 Barometric Pressure Sensor ...............................................................................................................166

5.2.1.3 AMBIENT TEMPERATURE sensor .....................................................................................................167

5.2.1.4 Relative Humidity sensor .....................................................................................................................168

5.2.1.5 piston-cylinder module temperature sensor .........................................................................................168

5.2.1.6 Reference Vacuum Gauge (PG7601 Only) ..........................................................................................170

5.2.2 Piston Position Detection Adjustment .................................................................................................170

5.2.3 Emptying Oil Run-Off Tray (PG7202 and PG7302 Only) .....................................................................171

5.2.4 Purge Mounting Post Liquid Run Off (PG7202 Only) ..........................................................................172

5.2.5 Drive Belt Replacement ........................................................................................................................172

5.3 Piston-Cylinder Modules ................................................................................................................... 173

5.3.1 Disassembly, Cleaning and Maintenance ............................................................................................173

5.3.2 Disassembly and Reassembly .............................................................................................................174

5.3.2.1 Disassembly and Reassembly of gas operated, gas lubricated piston-cylinder modules

(PC-7100/7600) ...............................................................................................................................174

5.3.2.2 Disassembly And Reassembly of Gas Operated, Liquid Lubricated

Piston-Cylinder Modules (PC-7200) ....................................................................................................178

5.3.2.3 Disassembly and Reassembly of Oil Operated, Oil Lubricated

Piston-Cylinder Modules (PC-7300) ....................................................................................................180

5.3.3 Filling or Emptying Gas Operated, Liquid Lubricated Piston-Cylinder Module

Reservoir with Liquid ............................................................................................................................182

5.3.4 Cleaning Piston-Cylinders ....................................................................................................................183

5.3.5 Lubricating Piston-Cy linder Modules ..................................................................................................185

5.3.6 Recalibration .........................................................................................................................................188

5.3.6.1 updating piston-cylinder module files ...................................................................................................188

5.4 Mass Sets ............................................................................................................................................ 189

5.4.1 Cleaning .................................................................................................................................................189

5.4.2 Recalibration .........................................................................................................................................189

5.4.2.1 Updating Mass Set Files .....................................................................................................................189

5.5 Reloading Embedded Software into PG7000 Flash Memory .......................................................... 189

5.6 Disassembly and Reassembly of PG7000 ........................................................................................ 190

5.6.1 Platform .................................................................................................................................................190

5.6.2 Terminal .................................................................................................................................................190

5.6.3 AMH Automated Mass Handler Removal .............................................................................................190

6. Troubleshooting............................................................ 191

6.1 Overview ............................................................................................................................................. 191

7. Appendix ...................................................................... 195

7.1 Conversion of Numerical Values ...................................................................................................... 195

7.1.1 Pressure ................................................................................................................................................195

7.2 Defined Pressure Calculations .......................................................................................................... 195

7.2.1 PG7102, PG7202 and PG7302 ...............................................................................................................197

7.2.2 PG7601 ...................................................................................................................................................198

7.2.3 Fluid Heads ............................................................................................................................................199

7.2.3.1 Fluid Head Components ......................................................................................................................199

7.2.3.2 Overall Fluid Head Correction .............................................................................................................200

7.3 Glossary .............................................................................................................................................. 201

7.4 Limited Warranty and Limitation of Liability .................................................................................... 203

Tables

Table 1. PG7102 Parts List ........................................................................................................................ 15

Table 2. PG7202 Parts List Table 3. PG7302 Parts List Table 4. PG7601 Parts List Table 5. Manual Mass Set Parts List (excluding 80 and 100 kg) Table 6. Manual Mass Set Parts List (80 and 100 kg) Table 7. AMH-38 Mass Set Parts List Table 8. AMH-100 Mass Set Parts List Table 9. Mass Set Compositions Table 10. Mass Set Compatibility Table 11. PC-7100/7 600 P iston-Cylinder Modules Parts List Table 12. PC-7200 Piston-Cylinder Modules Parts List Table 13. PC-7300 Pisto n -Cylinder Modules Parts List Table 14. Summary of PG7000 Direct Function Key Operations Table 15. Pressure Units of Measure Available Table 16. Valve Settings for Setting Differential Mode Static Pressure Table 17. Valve Settings to Apply PG7000 Pressure to the RPM for Differential Mode Offsetting Table 18. Valve Settings for Operating in Differential Mode Table 19. SETUP File Choices, Factory Preferred Choice and Normal Value Table 20. Security Levels - Functions NOT Executed Per Function/Level Table 21. COM1, COM2 and COM3 Available Settings Table 22. COM1 DB-9F Pin Designation Table 23. COM2 and COM3 DB-9M Pin Designation Table 24. Command Summary Table 25. Error Messages Table 26. Status Byte Register Table 27. Standard Event Register Table 28. Mounting Post Wire Colors, Description and Location Table 29. PG7000 Troubleshooting Checklist Table 30. Pressure Unit of Measure Conversions Table 31. PG7000 Defined Pressure Calculation Variables Table 32. DHI Authorized Service Providers

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TABLES AND FIGURES

Figures

Figure 1. PG Terminal Front Panel ............................................................................................................ 10

Figure 2. PG Terminal Rear Panel Figure 3. PG Platform Rear Panel Figure 4. Piston-Cylinder Module Installation Figure 5. Piston Gauge Operating Principle Figure 6. Gas Operated, Liquid Lubricated Piston-Cylinder (PC-7200) Operating Principle Figure 7. PG7000 Keypad Layout Figure 8. Piston Stroke and Zones Figure 9. Run Screen Flow Chart Figure 10. Differential Mode Controller Schematic Figure 11. High Line Differential Mode Schematic Figure 12. Status Byte Register Figure 13. PG7202 Mounting Post Drain Figure 14. 10 and 20 kPa/kg Gas Piston-Cylinder Module (Expande d Vie w) Figure 15. 10 kPa/kg Piston Insertion Tool Figure 16. Gas Piston-Cylinder Module Sleeve Nut Tool Figure 17. 50, 100 and 200 kPa/kg Gas Piston-Cylinder Modules (Expanded View) Figure 18. Gas Operated, Liquid Lubricated Piston-Cylinder Module (Expanded View) Figure 19. Oil Piston-Cylinder Module (Expanded View) Figure 20. Filling Gas Operated, Liquid Lubricated Piston-Cylinder Module Reservoir (PC-7200) Figure 21. Gas Operated, Gas Lubricated Piston-Cylinder Module Lubrication Chart Figure 22. Gas Operated, Liquid Lubricated Piston-Cylinder Module Lubricat ion Chart Figure 23. Oil Operated Piston-Cylinder Module Lubrication Chart

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About This Manual

This manual provides the u ser wit h the inf orm ation nec essar y to operate v arious PG7000 P iston Ga uges. It also includes a great deal of additional infor mation pr ovided to help you optimi ze PG7000 use and tak e full advantage of its many features and functions.

This manual covers four PG7000 m odels: PG7102, PG7202, PG7302 and PG7601. The four m odels have many features and characteristics in com mon as well as individual dif ferences. When discussing features th at are comm on to all four m odels, they ar e referred to c ollectively as PG7000. W hen providing information pertaining to a specific model, that model is referred to by its specific model number.

Before using the manual, take a moment to familiarize yourself with the Table of Contents structure. All first time PG7000 users should read Sections 1 and 2. Section 3 provides a comprehensive description of general PG7000 operating principles. Section 4 covers remote communication with an external computer. Section 5 provides maintenance and calibration information. Section 6 is a quick troubleshooting guide. Use the information in Section 6 to troubleshoot unexpected PG7000 behavior based on the symptoms of that behavior.

Certain words and expressions have specific meaning as they pertain to PG7000s. The Glossary (see Section 7) is useful as a quick referenc e for the definition of specific words and ex pressions as the y are used in this manual.

Note

For those of you who “don’t read manuals”, go directly to section Error! Reference source not found., initial setup, to set up your PG7000. Then go to section 2.4, power up and verification. This will get you running quickly with minimal risk of causing damage to yourself or your PG7000. THEN… when you have questions or start to wonder about all the great features you might be missing, get into the manual!

Manual Conventions

 Caution

“Caution” is used in throughout the manual to identify conditions or actions that could cause harm to the PG7000 or to the devices that are connected to it.

 Warning

“Warning” is used in throughout the manual to identify actions that could pose a hazard to the user of the PG7000.

Note

“Note” is used throughout the manual to identify operating and applications advice and additional explanations.

[ ] Indicates direct function keys (e.g., [RANGE]). < > Indicates molbox1+ screen displays (e.g., <1yes>).

ABOUT THIS M ANUAL

Notes

1. Introduction

1.1 Product Overview

PG7000 Piston Gauges are reference level pressure standards that operate on the piston gauge principle. Pressure is defined by balancing it against the force exerted by a known mass accelerated by gravity on the effective area of a piston-cylinder.

A PG7000 piston gauge co ns is ts of the PG7000 Platform , one or s everal pis to n-cylinder modules, a mass set. An automated m ass handling system is available. A PG7000 system normally also includes the means to generate and adjust pr essures and to interconnec t the system components and a device bein g calibrated or tested. The p ressure gen eration com ponent c an be m anual or a utom ated. COMPASS Pressure software m ay also be included to assist i n executing test sequences, acquir ing test data and producing test reports.

There are four PG7000 Platforms: PG7102, PG7202, PG7302 and PG7601. These have a common PG7000 presentation and features . They are distinguis hed by their nor mal operating medium ( oil and/or gas) and the capability to define pressures relative to a vacuum reference.

• PG7102 - Gas operated with gas lubricated piston-cylinder modules (PC-7100/7600 modules)

- Maximum pressure is 11 MPa (1 600 psi)

- Does not support definition of pressure against a vacuum reference

for

• PG7202 - Gas operated, liquid lubricated piston-cylinder modules (PC-7200 modules)

- Oil operated piston-cylinder modules (PC-7300 modules)

- Maximum pressure is 110 MPa (16 000 psi) when operate d w it h a P C-7200 module

- Maximum pressure is 200 MPa (30 000 psi) when operated with a PC-7300 module

- Does not support definition of pressure against a vacuum reference

• PG7302 - Oil operated (PC-7300 modules)

- Maximum pressure is 500 MPa (72 500 psi)

• PG7601 - Gas operated, gas lubricated piston-cylinder modules (PC-7100/7600 modules)

- Maximum pressure is 7 MPa (1 000 psi)

- Supports definition of pressure against a vacuum reference PG7000 platforms, piston-cylinder modules, mass sets and mass handling systems are designed to

maximize metrologic a l per f or mance and ease of oper atio n. They include m an y featur es that enhance the fundamental precision and stability of pressure measur ements as well as simplifying use and r educing operator influence on the m easurements. Extensive m onitoring and controlling capabilit y and advanced local and remote user interfaces are integrated into PG7000 Platforms.

Operator interaction with P G7000 and its extensive capabil ities and peripherals is ac complished through a single display and keypad on the PG Terminal or from a computer via a single standard RS232 or IEEE-488 interface.

PG7000™ OPERATION AND MAINTENANCE MANUAL

1.2 Specifications

1.2.1 General Specifications

Power Requirements Operating Temperature Range Operating Humidity Range Weight

Instrument platform with no mass loaded.

PG7102 PG7202 PG7302 PG7601

PG Terminal

Dimensions

Instrument Platform

PG Terminal

Microprocessors

Instrument Platform

PG Terminal

Communication Ports

RS232

IEEE-488

Overall Pressure Ranges

Actual range depends on piston-cylinder and mass set selection

PG7102 Gauge: 5 kPa to 11 MPa (0.7 to 1 600 psi)

PG7202 Gauge (gas): 100 kPa to 110 MPa (15 to 16 000 psi)

PG7302 Gauge: 20 kPa to 500 MPa (3 to 75 000 psi)

PG7601 Gauge: 4 kPa to 7 MPa (0.6 to 1 000 psi)

Operating Media

PG7102 PG7202

PG7302 PG7601

85 to 264 VAC, 50/60 Hz, 22 VA max. consumption. 15 to 35 °C 5 to 95% R.H., non-condensing

13 kg (29 lb) 13 kg (29 lb) 13 kg (29 lb) 17 kg (37 lb)

1.4 kg (3 lb)

36 cm H x 40 cm W x 35 cm D (14.5 in. x 15.8 in. x 13.8 in.) (Height: Top of mounting post with piston-cylinder module installed

for PG7102/PG7202/PG7302; top of bell jar for PG7601.) 12 cm H x 15 cm W x 20 cm D (4.7 in. H x 5.9 in. W x 7.9 in. D)

Motorola 68302 Hitachi 64180

COM1: Host computer COM2: External barometer or vacuum gauge (PG7601) and pass through communications COM3: Automated pressure generator/controller

Host computer

Absolute: 105 kPa to 11 MPa (15 to 1 600 psi) Differential: DP + static pressure < 11 MPa (1 600 psi)

Absolute (gas): 200 kPa to 110 MPa (30 to 16 000 psi) Gauge (oil): (PG7302 module): 1 to 200 MPa (150 to 30 000 psi) Absolute (oil): (PG7302 module) 1.1 to 200 MPa (165 to 30 000 psi) Differential: DP + static pressure < 110 MPa (16 000 psi)

Note

PC-7200 can be operated in oil up to 200 MPa (30 000 psi) when used with PC-7300 oil operated pistoncylinders.

Absolute: 120 kPa to 500 MPa (20 to 75 000 psi)

Absolute: 7 kPa to 7 MPa (0.7 to 1 000 psi) Differential: - 90 to 350 kPa (-13 to 50 psi) at 15 to 200 kPaa (2 to 30 psia) static pressure

Gas: air, helium, nitrogen Gas: any non-corrosive

Oil: Di2-EthylHexyl Sebacate (synthetic oil) Oil: Di2-EthylHexyl Sebacate (synthetic oil) Gas: air, helium, nitrogen

1. INTRODUCTION

Maximum Mass Load

Pressure Connections

CE Conformance

PG7102 PG7202

PG7302 PG7601

PG7102 PG7202

PG7302 PG7601

100 kg, while not exceeding 11 MPa (1 600 psi) 100 kg, while not exceeding 110 MPa (16 000 psi) when operated

with PC-7200 piston-cylinder modules or 200 MPa (30 000 psi) when operated with PC-7300 piston-cylinder modules

100 kg 38 kg

T es t port : DH200 T es t port : DH500

Drain port: DH500 T es t port : DH500 T es t port : DH200

Bell Jar Vent Port: DH200

Vacuum Reference Pump Down Port: KF25 (KF40 available on optional AMH automated mass handler)

External Vacuum Port: Optional KF25 on bell jar (KF40 available on optional AMH automated mass handler)

Note

DH200 and DH500 are gland and collar t ype fittings for 1/4 in. (6.35 mm) coned and left hand threaded tubes.

DH200 is equivalent to AE SF250C, HIP LF4, etc. DH500 is equivalent to AE F250C, HIP HF4, etc.

Available, must be specified.

1.2.1.1 Embedded Features

• Local contr ol with 2 x 20 vacuum fluorescent dis play and 4 x 4 function driven keypad.

• Real tim e (1 second update rate) display and m easurement of ambient (pressure, temperature, humidity) and instrument (piston-cylinder temperature, piston posit ion, piston drop rate, pis ton rotation rate, piston rotation decay rate, reference vacuum) conditions.

• Real time (1 second update rate) mass-to-pressure and pressure-to- mass calculations taking into consideration all environmental and operational variables.

• Full gas and liquid fluid head cor rections including D UT head correction and piston position head correction.

• Adjustable mass loading resolution (0.01 g to 0.1 kg).

• Audible prompts of instrument status (piston movement, Ready/Not Ready

indication) with override capability.

• Integra ted aut omated mass handling option (AMH-38 or AMH-100).

• Interfacing and automatic exploitation of external barometer via RS232.

• Interf acing and automatic exploi tation of any external vac uum gauge via

RS232 (PG7601 only).

• Automated differential mode to define low differential pressures at various static pressures between vacuum and two atmospheres.

• Automated high line differential mode to define differential pressure at high line pressure.

• Storage and one step activation of metrological data on up to 18 piston- cylinder modules, (3) mass sets and (3) mass loading bells.

PG7000™ OPERATION AND MAINTENANCE MANUAL

• Continuous pressure Ready/Not Ready indication based on measured conditions.

• Motor ized, intelligent piston drive system based measured rotation rate with operator alert and manual override.

• Integrated automated pressure control with standard Fluke Calibration pressure controllers.

• Full RS23 2 and IEEE-488 c ommunications with m ulti-level comm ands to set and read all instrument functions.

1.2.1.2 Ambient and Instrument Condition Measurements

Temperature

Range

Resolution

Measurement Uncertainty

Barometric Pressure with Internal Sensor

Range

Resolution

Measurement Uncertainty

Relative Humidity

Range

Resolution

Measurement Uncertainty

Piston Position

Range

Resolution

Measurement Uncertainty

Piston Rotation

(Rate and deceleration)

Range

Resolution

Ambient

0 to 40

0.1 0.01 ± 1 ± 0.1

70 to 110 kPa 10 Pa ± 140 Pa Barometric pressure can also be read automatically with any

RS232 device such as a FCAL RPM.

5 to 95 % RH 1 % RH

± 10 % RH

± 4.5 mm

0.1 mm ± 0.2 mm

2 to 99 rpm 1 rpm

Piston Cylinder Module

C 0 to 40 oC

Vacuum

(PG7601 only)

Range

Resolution

Measurement Uncertainty

0 to 20 Pa

0.01 Pa ± 0.1 Pa or 10 % of reading, whichever is greater

1. INTRODUCTION

1.2.2 Piston-Cylinder Modules

All piston-cylinders are integr ated m odules inc luding m ounting h ardware delivere d in indi vidual shipping and storage bullet cases.

1.2.2.1 PC-7100/7600

Gas operated, gas lubricated piston-cylinder characteristics. Used in PG7102 and PG7601 platforms.

PC-7100/7600-10, TC PC-7100/7600-10-L

Operation

Piston Material

Cylinder Material

Nominal Diameter

Nominal Area

Mounting System

Gas operated, gas lubricated Tungsten carbide Tungsten carbide 35 mm 1 000 mm Simple free deformation

PC-7100/7600-20

Piston Material

Cylinder Material

Nominal Diameter

Mounting System

PC-7100/7600-50

Piston Material

Cylinder Material

Nominal Diameter

Mounting system

PC-7100/7600-100

Piston Material

Cylinder Material

Nominal Diameter

Mounting System

PC-7100/7600-200

Piston Material

Cylinder Material

Nominal Diameter

Mounting System

Operation

Nominal Area

Operation

Nominal Area

Operation

Nominal Area

Operation

Nominal Area

Gas operated, gas lubricated Tungsten carbide Tungsten carbide 25 mm

500 mm Simple free deformation

Gas operated, gas lubricated Tungsten carbide Tungsten carbide 16 mm 200 mm Negative free deformation

Gas operated, gas lubricated Tungsten carbide Tungsten carbide 11 mm 98 mm Negative free deformation

Gas operated, gas lubricated Tungsten carbide Tungsten carbide 8 mm 50 mm Negative free deformation

PG7000™ OPERATION AND MAINTENANCE MANUAL

1.2.2.2 PC-7200

Gas operated, liquid lubricated piston-cylinder module characteristics. Used in PG7202 platform.

Though not recommended for day-to-day operation, PC-7200 modules can also be filled completely with oil and operated with oil as the test medium (see Section 2.3.3).

Note

PC-7200-100

Piston and Cylinder Material

PC-7200-200

Piston and Cylinder Material

PC-7200-500

Piston and Cylinder Material

PC-7200-1

Piston and Cylinder Material

PC-7200-2

Piston and Cylinder Material

Operation

Lubricating Liquid

Nominal Diameter

Nominal Area

Mounting System

Operation

Lubricating Liquid

Nominal Diameter

Nominal Area

Mounting System

Operation

Lubricating Liquid

Nominal Diameter

Nominal Area

Mounting System

Operation

Lubricating Liquid

Nominal Diameter

Nominal Area

Mounting System

Operation

Lubricating Liquid

Nominal Diameter

Nominal Area

Mounting System

Gas operated, liquid lubricated Synturion 6 (Krytox

optional)

Tungsten carbide

11.2 mm

98.1 mm

Negative free deformation

Gas operated, liquid lubricated Synturion 6 (Krytox

optional)

Tungsten carbide

7.9 mm

49.0 mm

Negative free deformation

Gas operated, liquid lubricated Di-2-ethylhexyl Sebacate (Krytox Tungsten carbide

5.0 mm

19.6 mm

Negative free deformation

Gas operated, liquid lubricated Di-2-ethylhexyl Sebacate (Krytox Tungsten carbide

3.5 mm

9.8 mm Negative free deformation

Gas operated, liquid lubricated Di-2-ethylhexyl Sebacate (Krytox Tungsten carbide

2.5 mm

4.9 mm Negative free deformation

optional)

1. INTRODUCTION

1.2.2.3 PC-7300

Oil operated, oil lubricated piston-cylinder module characteristics. Used in PG7302 and PG7202 platforms (1 MPa/kg and higher only in PG7202).

Note

PC-7300 modules PC-7300-1, -2 and -5 may also be used in a PG7202 platform.

PC-7300-100

Piston and Cylinder Material

PC-7300-200

PC-7300-500

PC-7300-1

PC-7300-2

PC-7300-5

Operation

Nominal Diameter

Nominal Area

Mounting System

Operation

Piston and Cylinder Material

Nominal Diameter

Nominal Area

Mounting System

Operation

Piston and Cylinder Material

Nominal Diameter

Nominal Area

Mounting System

Operation

Piston and Cylinder Material

Nominal Diameter

Nominal Area

Mounting System

Operation

Piston and Cylinder Material

Nominal Diameter

Nominal Area

Mounting System

Operation

Piston and Cylinder Material

Nominal Diameter

Nominal Area

Mounting System

Oil operated, oil lubricated Tungsten carbide

11.2 mm

98.1 mm Simple free deformation

Oil operated, oil lubricated Tungsten carbide

7.9 mm

49.0 mm Simple free deformation

Oil operated, oil lubricated Tungsten carbide

5.0 mm

19.6 mm Simple free deformation

Oil operated, oil lubricated Tungsten carbide

3.5 mm

9.8 mm Simple free deformation

Oil operated, oil lubricated Tungsten carbide

2.5 mm

4.9 mm Simple free deformation

Oil operated, oil lubricated Tungsten carbide

1.6 mm

2.0 mm Simple free deformation

1.2.3 Mass Sets

All masses are delivered in molded, reusable, transit cases with custom inserts.

Masses > 50g

Material

Finish

Adjustment Tolerance

Uncertainty of Measured Values

Masses < 50g

304L non-magnetic stainless steel Electropolished ± 20 ppm of nominal value (manual mass sets, AMH

automated mass handler mass sets do not have fixed adjustment tolerances)

± 5 ppm or 1 mg, whichever is greater

± 1 mg

PG7000™ OPERATION AND MAINTENANCE MANUAL

Masses desig nat ed “ t ar e” are d el ive red w ith out rep ort ed m easu r ed va lu es and are intended only for use on the “tare” PG7000 in high line differential pressure measurement mode.

1.2.4 Pressure Measurements

1.2.4.1 PC-7100/7600

For uncertainty in piston-cylinder effective area and typical measurement uncertainty in pressure defined by the piston gauge, see the piston-cylinder calibration report and current revision of Technical Note 7920TN01.

Note

PC-7100/7600-10 PC-7100/7600-10-L

Sensitivity

Reproducibility

Typical Drop Rate (35 kg)

PC-7100/7600-20

Sensitivity

Reproducibility

Typical Drop Rate (35 kg)

PC-7100/7600-50

Sensitivity

Reproducibility

Typical Drop Rate (35 kg)

PC-7100/7600-100

Sensitivity

Reproducibility

Typical Drop Rate (35 kg)

PC-7100/7600-200

Sensitivity

Reproducibility

Typical Drop Rate (35 kg)

1 Sensitivity: The smallest variation in input detectable in output.

0.02 Pa + 0.5 ppm

± 2 ppm

0.2 mm/min

0.04 Pa + 0.5 ppm

± 2 ppm

0.3 mm/min

0.1 Pa + 0.5 ppm

± 2 ppm

0.5 mm/min

0.2 Pa + 0.5 ppm

± 3 ppm

0.7 mm/min

0.4 Pa + 0.5 ppm

± 3 ppm

1.0 mm/min

Piston-cylinder modules designated “tare” are delivered without reported values and are intended only for use on the “tare” PG7000 in high line differential pressure measurement mode.

Note

1. INTRODUCTION

1.2.4.2 PC-7200

Note

PC-7200-100

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

PC-7200-200

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

PC-7200-500

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

PC-7200-1

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

PC-7200-2

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

1 Sensitivity: The smallest variation in input detectable in output. 2 Reproducibility: Combined long term stability of piston-cylinder effective area and masses.

2 Pa + 1 ppm

± 5 ppm

0.10 mm/min

4 Pa + 1 ppm

± 5 ppm

0.15 mm/min

10 Pa + 1 ppm

± 5 ppm

0.20 mm/min

20 Pa + 1 ppm

± 5 ppm

0.25 mm/min

40 Pa + 1 ppm

± 5 ppm

0.50 mm/min

1.2.4.3 PC-7300

Note

PC-7300-100

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

PC-7300-200

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

PC-7300-500

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

2 Pa + 1 ppm

± 5 ppm

0.02 mm/min

4 Pa + 1 ppm

± 5 ppm

0.04 mm/min

10 Pa + 1 ppm

± 5 ppm

0.10 mm/min

PG7000™ OPERATION AND MAINTENANCE MANUAL

PC-7300-1

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

PC-7300-2

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

PC-7300-5

Sensitivity

Reproducibility

Typical Drop Rate (50 kg)

1 Sensitivity: The smallest variation in input detectable in output. 2 Reproducibility: Combined long term stability of piston-cylinder effective area and masses.

20 Pa + 1 ppm

± 5 ppm

0.20 mm/min

40 Pa + 1 ppm

± 5 ppm

0.40 mm/min

100 Pa + 1 ppm

± 5 ppm

1.00 mm/min

1.3 Terminal and Platform Front and Rear Panels

1.3.1 Terminal Front and Rear Panels

1.3.1.1 PG Terminal Front Panel

The front panel ass embly provides a 2 x 20 vacuum fluorescent display and a 4 x 4 membrane keypad for local user interface. The terminal front panel assembly is the same for all PG7000 models.

Figure 1. PG Terminal Front Panel

 Fluorescent display

 Keypad

1. INTRODUCTION

1. Power switch

3. Power receptacle

4. Connector for cable to PG7000 (25-pin)

1.3.1.2 PG terminal Rear Panel

The rear panel assembly provides the communications connection to the PG7000 Platform and the power connection module. The terminal rear panel assembly is the same for all PG7000 models.

2. Fuse

Figure 2. PG Terminal Rear Panel

5. Cooling fan

1.3.2 Platform Rear Panels

The PG7000 Platform rear panels provide the connection to the PG Terminal, remote communication connections and pressure connection ports. The rear panels of all PG7000 models are identical except for the pressure connections (see Figure 3, # 7).

COM2 (RS232) - External



Barometer, External Vacuum Gauge (PG7601 only) and Pass Through Communications

 COM3 (RS232) - Automated

Pressure Generation/Control Component

 Temperature - Humidity Probe  COM1 (RS232) - Remote Hos t

Communications

 IEEE-488 - Remo te Host

Communications

 AMH Connection  Pressure Ports:

PG7102 - TEST port: DH200

PG7202 - TEST and DRAIN

ports: DH500 PG7302 - TEST port: DH500 PG7601 - TEST and VACUUM vent

ports: DH200 Vacuum pull down port on front

left side: KF25

 PG7000 Terminal Port

Figure 3. PG Platform Rear Panel

PG7000™ OPERATION AND MAINTENANCE MANUAL

Notes

2. Installation

2.1 Unpacking And Inspection

2.1.1 Removing from Packaging

A t ypical PG7000 s ystem incl udes the PG7000 P latform ( see Sect ion 2.1.1 .1), a mas s set, (see Section 2.1.1.2), one or more piston-cylinder modules (see Section 2.1.1.3) and other accessories such as an AMH a utomated mass han dler and/or pres sure generation a nd control com ponents (see the accessory Operation and Maintenance Manual or Instruction Sheet).

2.1.1.1 Platform

 Caution

The mass loading bell is a metrological element that is part of the mass set. Like all of the masses, it is preferable not to handle it with bare hands. Protective gloves are provided in the accessory kit of each PG7000 Platform.

The PG7000 Platform is shipped in a reusable, molded shipping and storage case.  Open the PG7000 shipping and storage case (it is th e large, 66 cm x 53 cm

x 47 cm case).

 Remove the PG Terminal and accessories from upper packing insert.

Inspect and inventory the acc ess or ies (see Secti on 2.1 .2).

 Remove the upper packing insert.  Carefully lift the PG7000 Platform from its position in the lower packing

insert. Note the orientatio n so that the same orientation will be used when PG7000 is repacked.

 Reinstall the upper packing insert into the shipping and storage case and

store in a safe place.

2.1.1.2 Mass Set

 Caution

The stability over time of PG7000 pressure measurements is a function of the stability of the masses loaded on the piston. Precautions should be taken in handling the masses to minimiz e influences that may change their mass. This includes always wearing protective gloves when handling the masses to avoid contaminating them with body oils and perspiration. Protective gloves are pr ovid ed i n th e a cce ss ory k it s of PG700 0 P la tfor ms.

The mass set accessories are shipped in a separate corrugated container. Open the corrugated container and inspect and inventory the accessories.

The PG7000 masses are shipped in reusable, molded shipping and storage cases. The PG7000 masses should be removed from their shipping cases and inventoried when actually setting up the PG7000 system.

PG7000™ OPERATION AND MAINTENANCE MANUAL

2.1.1.3 Piston-Cylinder Module(s)

The piston-cylinder modules are shipped in Acetal bullet cases that ar e p ac k ed in corrugated containers with custom foam inserts.

Open the corrugated containers and remove the piston-cylinder modules and accessories.

The bullet cases screw open by turning the lid counterclockwise.

When reinstalling an oil (PC-7300) or liquid lubricated (PC-7200) piston-cylinder module in its bullet case, be sure to empty out any liquid that may have collected in the hole in the bottom of the case. Excess liquid wi ll not compress, making it difficult to fully close the case and could result in damaging it.

2.1.1.4 Automated Mass Handler

See the AMH-38/AMH-100 Operation and Maintenance Manual.

2.1.2 Inspecting Contents

Check that all items ar e present and have NO visible signs of damage. A parts list of items supplied is provided in Section 2.1.2.1 for PG7000, Section 2.1.2.2 for mass sets, and Section 2.1.2.3 for piston-cylinder modules.

 Caution

2.1.2.1 Platform

Each PG7000 Platform is delivered complete with acces sories as listed by part number in Tables 1 through 4.

2. INSTALLATION

Documentation

Documentation CD

3139043

Table 1. PG7102 Parts List

PG7102

DESCRIPTION

Platform 3117734 3117752 Manual Mass Bell 3071537 Terminal 3069735 PG Terminal to Platform Cable Non-CE (DB25M - DB25F,

≈ 1.8 meters) CE (DB25M - DB25F,

≈ 1.5 meters) Power Cable 3133781 (Black) 3153005 (Gray) TH Probe Assembly 2106009 Accessory Kit 3117741 NIP, SS, DH200, 2.75 in. 3068377 ADPT, SS, DH200 F x 1/8 in. NPT F 3068547 O-ring, Buna 2-242 (2 ea.) 3135041 Storage Cover, 7600 Type 3135594 Allen Wrench, 2.5 mm 3136044 Allen Wrench, 3 mm 3135703 Allen Wrench, 5 mm 3136098 Spanner Wrench (Metrological) 3068940 Krytox GPL205/6 0.5 oz. Gift Kit with Gloves 3123777 ADPT, DH200 M x 1/8 in. swage 3069062

P/N 3069572

NON-CE

3068724

3072235

2493420

PG7102

P/N 3072317

Calibration Report (PG Platform) Calibration Report (Mass Bell) Technical Data PG7000 Operation & Maintenan ce Ma nu al

3152121 3152121 3152139

3152117

PG7000™ OPERATION AND MAINTENANCE MANUAL

Table 2. PG7202 Parts List

PG7202

DESCRIPTION

Platform 3119996 3120027 Manual Mass Bell 3071537

Terminal 3069735 PG Terminal to Platform Cable Non-CE (DB25M - DB25F,

≈ 1.8 meters) CE (DB25M - DB25F,

≈ 1.5 meters) Power Cable 3133781 (Black) 3153005 (Gray) TH Probe Assembly Accessory Kit 3120011 DH500 M x 1/8 in. NPT F 3142684 O-ring, Buna 2-242 (2 ea.) 3135041 Storage Cover, 7600 Type 3135594 Allen Wrench, 2.5 mm 3136044 Allen Wrench, 3 mm 3135703 Allen Wrench, 5 mm 3136098 Wrench, 5/8 in. 3139417 Collar, SS, DH500 3068607 Krytox GPL205/6 0.5 oz. Gift Kit with Gloves 3123777 Documentation

Calibration Report (PG) Calibration Report (Mass Bell) Technical Data PG7000 Operation & Maintenan ce Ma nu al Documentation CD

#3070404

NON-CE

3068724

3072235

2106009

2493420

3152121 3152121 3152139

3152117 3139043

PG7202

#3072395

2. INSTALLATION

Table 3. PG7302 Parts List

PG7302

DESCRIPTION

P/N 3069747

NON-CE

Platform 3118073 3118086 Manual Mass Bell 3071537 Terminal 3069735 PG Terminal to Platform Cable Non-CE (DB25M - DB25F,

≈ 1.8 meters) CE (DB25M - DB25F,

Calibration Report (PG) Calibration Report (Mass Bell) Technical Data PG7000 Operation & Maintenan ce Ma nu al Documentation CD

3068724

3072235

2106009

2493420

3152121 3152121 3152139

3152117 3139043

PG7302

P/N 3072339

PG7000™ OPERATION AND MAINTENANCE MANUAL

Table 4. PG7601 Parts List

PG7601

DESCRIPTION

Platform 3117525 3117540 Manual Mass Bell 3071603 Bell Jar and Seal 3068933 and 3068634 Terminal 3069735 PG Terminal to Platform Cable Non-CE (DB25M - DB25F,

≈ 1.8 meters) CE (DB25M - DB25F,

≈ 1.5 meters) Power Cable 3133781 (Black) 3153005 (Gray) TH Probe Assembly Accessory Kit 3117533 NIP, SS, DH200, 2.75 in. 3068377 ADPT, SS, DH200 F x 1/8 in. NPT F 3068547 O-ring, Buna 2-242 (2 ea.) 3135041 Storage Cover, 7600 Type 3135594 Allen Wrench, 2.5 mm 3136044 Allen Wrench, 3 mm 3135703 Allen Wrench, 5 mm 3136098 Spanner Wrench (Metrological) 3068940 Krytox GPL205/6 .5 oz. Gift Kit with Gloves 3123777 ADPT, DH200 M x 1/8 in. swage 3069062 Valve, Vacuum Relief 3124573 Documentation

Calibration Report (PG) Calibration Report (Mass Bell) Technical Data PG7000 Operation & Maintenan ce Ma nu al Documentation CD

P/N 3069028

NON-CE

3068724

3072235

2106009

2493420

3152121 3152121 3152139

3152117 3139043

PG7601

P/N 3072258

2. INSTALLATION

2.1.2.2 Mass Set

PG7000 mass sets are compos ed of different c ombinations of ind ividual mas ses and accessories depending on the specific mass set ordered (see Tables 5 - 9).

Table 5. Manual Mass Set Parts List (excluding 80 and 100 kg)

DESCRIPTION PART NO.

Mass Set Refer to Table 9 Reusable Molded Transit Case with Foam Inserts

35 kg set 40 kg set 45 kg set 55 kg set

Mass Set Tray and Spindle 3147461 and 3148764 Dust Covers 3138017 and 3138130 Calibration Report 3152121

3068969

1 ea. 1 ea. 1 ea. 1 ea.

Table 6. Manual Mass Set Parts List (80 and 100 kg)

DESCRIPTION PART NO.

Mass Set Refer to Table 9 Reusable Molded Transit Case with Foam Inserts

80 kg set 100 kg set

Mass Set Tray and Spindle 3147461 and 3148764 Dust Covers 3138017 and 3138127 Calibration Report 3152121

3068969

1 ea. 1 ea.

3068991

1 ea. 1 ea. 1 ea. 2 ea.

3068984

2 ea. 3 ea.

Table 7. AMH-38 Mass Set Parts List

DESCRIPTION PART NO.

Mass Set Refer to Table 9 Reusable Molded Transit Case with Foam Inserts

13 kg set (MS-AMH-13) 25 kg set (MS-AMH-25) 39 kg set (MS-AMH-38)

Calibration Report 3152121

3123990

1 ea. 1 ea. 1 ea.

3069004

1 ea. 1 ea. 1 ea.

Table 8. AMH-100 Mass Set Parts List

DESCRIPTION PART NO.

Mass Set Refer to Table 9 Reusable Molded Transit Case with Foam Inserts

40 kg set (MS-AMH-40) 60 kg set (MS-AMH-60) 80 kg set (MS-AMH-80) 100 kg set (MS-AMH-100)

Calibration Report 3152121

3123990

1 ea. 1 ea. 1 ea. 1 ea.

3068984

1 ea. 2 ea. 2 ea. 3 ea.

PG7000™ OPERATION AND MAINTENANCE MANUAL

Table 9. Mass Set Compositions

DESIGNATION PART #

MS-7001-35 3069850 35 - 5 2 1 1 2 1 1 (4.5) MS-7002-35 3069861 35 - 5 2 1 1 2 1 1 (4) MS-7002-40 3070021 40 - 6 2 1 1 2 1 1 (4) MS-7002-45 3069980 45 - 7 2 1 1 2 1 1 (4) MS-7002-55 3069877 55 - 9 2 1 1 2 1 1 (4) MS-7002-80 3070000 80 6 1 2 1 1 2 1 1 (9) -

MS-7002-100 3070017 100 8 1 2 1 1 2 1 1 (9) -

TOTAL

MASS (kg)

kg 2 kg 1 kg

DESIGNATION PART # NOMINAL

TOTAL

NOMINAL

MASS (kg)

MS-AMH-13 3071491 13 - - 1 1 1 1 1 1 1 1 MS-AMH-25 3071484 25 - - 3 1 1 1 1 1 1 1 MS-AMH-38 3071433 38 - - 5 1 1 1 1 1 1 1 MS-AMH-40 3071528 40 3 1 - 1 1 1 1 1 1 1 MS-AMH-60 3071519 60 5 1 - 1 1 1 1 1 1 1 MS-AMH-80 3071504 80 7 1 - 1 1 1 1 1 1 1

MS-AMH-100 3071440 100 9 1 - 1 1 1 1 1 1 1

6.4 kg

MASS SET COMPOSITION

0.5 kg

MASS SET COMPOSITION

6.2

3.2 kg

1.6 kg

0.2 kg

0.8 kg

0.1 kg

0.4 kg

MAKE-UP

MASS

(kg)

0.2

0.1

BELL, SHAFT, BINARY MASS

CARRIER

(3 PARTS)

Table 10. Mass Set Compatibility

DESIGNATOR

MS-7001-35 MS-7002-35 35 MS-7002-40 40 MS-7002-45 45 MS-7002-55 55 MS-7002-80 80

MS-7002-100 100

MS-AMH-13 13 MS-AMH-25 25 MS-AMH-38 38 MS-AMH-40 40 MS-AMH-60 60

MS-AMH-80 80

MS-AMH-100 100

These m ass sets, on c ertain pist on-cylinde r sizes, ca n cause t he maxim um working pressure of the PG Platform to be

exceeded. Do not exceed the follo wi ng maxim um working pressures:

1. PG7201: 11 MPa (1 600 psi)

2. PG7202: When using PC-7200 pisto n-cylinder modules: 110 MPa (16 000 psi)

3. PG7302:500 MPa (72 500 psi)

When using PC-7300 piston-cylinder modules: 200 MPa (30 000 psi)

NOMINAL

TOTAL MASS (kg)

PG7102 PG7202 PG7302

• • •

•1 •1

• • •

•1 •1

•

PG7601

•

2. INSTALLATION

Note

The mass loading bell and piston make up part of the total mass load. The mass loading bell for loading manual mass sets is delivered with the PG7000 platform. The mass loading bell for AMH mass sets is d elivered with the m ass set. Piston -cylinder modules are purchased and delivered separately.

2.1.2.3 Piston-Cylinder Module(s)

Table 11. PC-7100/7600 Piston-Cylinder Modules Parts List

10 kPa

PC-7100/

7600-10-L

Piston-Cylinder Kit 3171975 3070095 3071581 3070109 3071615 3070111 Piston-Cylinder

Module Hermetic Acetal

Bullet Case Accessory Kit 3125242 3122928 3122229 3124345 3124345 3124345

O-rings

Insertion Tool 3071793 3071841 N/A N/A N/A N/A

Calibration Report 3152121 3152121 3152121 3152121 3152121 3152121

3125106 3122937 3122116 3124088 3122234 3124194

3070203 3070203 3070203 3070203 3070203 3070203

3134867 3136458

10 kPa

PC-7100/ 7600-

10 TC

3134867 3136458

20 kPa

PC-7100/

7600-20

3134867

3136458

50 kPa

PC-7100/

7600-50

3134880 3136458

100 kPa

PC-7100/ 7600-100

3134880 3136458

200 kPa

PC-7100/ 7600-200

3134880 3136458

Table 12. PC-7200 Piston-Cylinder Modules Parts List

Piston-Cylinder Kit 3070419 3070428 3070437 3070443 3070455 Piston-Cylinder Module Hermetic Acetal

Bullet Case Accessory Kit

O-rings

Anti-Extrusion Ring Syringe Syringe tips (3) 3139421 (3) 3139421 (3) 3139421 (3) 3139421 (3) 3139421 Synturion 6 fluid Sebacate fluid Calibration Report 3152121 3152121 3152121 3152121 3152121

100 kPa

PC-7200-100

3120245 3120250 3120292 3120303 3120326

3071852 3071852 3071852 3071852 3071852

3120277 3120277 3120315 3120315 3120315

(2) 3134158

2721018 2644003

N/A N/A 3148417 3148417 3148417

3139439 3139439 3139439 3139439 3139439

3120289 3120289 - - -

- - 3120590 3120590 3120590

200 kPa

PC-7200-200

(2) 3134158

2721018 2644003

500 kPa

PC-7200-500

(2) 3134158

2721018 2644003

1 MPa

PC-7200-1

(2) 3134158

2721018 2644003

2 MPa

PC-7200-2

(2) 3134158

2721018 2644003

PG7000™ OPERATION AND MAINTENANCE MANUAL

Table 13. PC-7300 Piston-Cylinder Modules Parts List

100 kPa

PC-7300-100

Piston-Cylinder Kit Piston-Cylinder

Module Hermetic Acetal

Bullet Case Accessory Kit 3119102 3119102 3119102 3119366 3119366 3119366

O-rings

Calibration Reports

3070039 3070042 3070056 3070063 3070074 3070088

3118918 3118976 3119032 3119116 3119178 3119229

3071865 3071865 3071865 3071865 3071865 3071865

2527053 3134022

3152121 3152121 3152121 3152121 3152121 3152121

200 kPa

PC-7300-200

2527053 3134022

500 kPa

PC-7300-500

2527053 3134022

1 MPa

PC-7300-1

1785497

(5) 927863

2 MPa

PC-7300-2

1785497

(5) 927863

5 MPa

PC-7300-5

1785497

(5) 927863

2.2 Site Requirements

The exact PG7000 s ystem installation is af fected by the elements ot her than the PG7000 Platf orm that make up the PG7000 system.

When selecting and preparing a site to set up the PG7000 system, the following should be considered:

• Ambient conditions: To a chieve optimum metrologic al performance, ambient c onditions should be controlled and maintained within the following:

♦ Temperature: 19 to 23 °C, minimize rate of change of temperature. ♦ Relative Humidity: 10 to 60 %RH (non-condensing). ♦ Ambient Pressure: Minimize external influences that will cause barometric instability. ♦ Air Currents: Do not i nstall the PG70 00 Pla tform un der a sour ce of v ertica l air curr ents s uch as an

overhead air conditioning duct. These can blow on the mass load and add unquantified forces.

♦ Vibration: Minimize local v ibration. Excessive vibration will red uce the stabilit y of the pressures

defined by PG7000 (v ibration aff ects the floating piston). Exces sive high fr equency vibration , for example from a vacuum pump on the same table as the PG7000, may affect piston sensitivity.

• Bench st ability: Up to 100 kg ma y be loaded and unloaded onto the PG7000 Platf orm. The bench on which the PG7000 sits should not def lect significa ntly under the m ass load changes. T his can be verified by setting the PG7 000 Platform on the bench, leveling it, l oading and u nloading the c omplete mass set while observing whether the level setting changes.

• Location of other components: Plan the space requir ed and a convenient layout f or the complete PG7000 system inclu ding t he PG T erm inal, m ass s et, pressure gen erat ion/co ntrol com ponent( s), tes t instrument connection and computer (if present). If using a PPC, MPC, GPC or OPG to generate/control pres sure, see its Operat ion and Maintenanc e Manual for infor mation on installin g it. If a Fluke Calibration interconnections kit is being used to interconnect the components, see its instruction sheet.

• Elect rical and pressu re suppli es: Plan the supply of elect rical power to th e PG Term inal and to the pressure generation/control component(s), if needed. If using a PPC, MPC, GPC or OPG to generate/control pressure, see its Operation and Maintenance Manual for information on the pressures source(s) it needs and how to connect them. Gas supplied to a PC-7100/7600 piston-cylinder module m ust be clean and dry (instrument grade minim um, high purity preferred) to avoid contaminating the piston-cylinder gap.

• Referen ce vacuum supply (PG7601 only): Plan for the vacuum connection to the pl atform or the optional AMH automated mas s handler and the location of the reference vacuum pump.

• Bell jar placement (PG7601 only): Plan a location for the bell jar when it is removed from the platform to load and unload masses. A small shelf is often used for this purpose.

• AMH automated mass handler (optional) placement: If an AMH is being used, plan electrical and pneumatic connectio ns to it as well as a locat ion to p lace it when it is rem oved fr om the pl atform (s ee the AMH-38/AMH-100 Operation and Maintenance Manual).

2. INSTALLATION

2.3 Setup

2.3.1 Preparing for Operation

Note

Before setting up the PG7000 system, see Section 2.2 for information on site requirements.

To prepare PG7000 for check out and operation:

 Set up the PG7000 Platform (see Section 2.3.1.1).  If an optional AMH-100 m ass set is being used, set it up with its m ass set (see the AMH -

38/AMH-100 Operation and Maintenance Manual).

 Make the system pressure interconnections (see Section 2.3.1.2).  If a manual mass set is being used, set up the manual mass set (see Section 2.3.1.3).

2.3.1.1 Setting Up the Platform

To set up the PG7000 Platform proceed as follows:  Place the PG7000 Platform on the site table in the desired orientation.

Though the rear panel is usually in the back, any orientation can be used.

 Place the PG7000 Terminal at the desired location.  Connect the PG7000 Terminal to the PG7000 Platform using the 25-pin

cable supplied.

 Connect the PG7000 Temperature - Humidity Probe per Figure 3.  Connect electrical power ( 85 to 264 VAC, 50/60 H z) to the PG700 0 Term inal

using the power cable sup plied. Any grounde d power cable with a sta ndard IEC320-313 connection may be used.

 (PG7601 Only) - Install the vacuum vent valve kit on the vacuum vent port

on the rear of the PG7000 Platform. Refer to the inst ruction sheet provide d with the vent valve assembly.

Connect the reference vacuum source and shutoff valve to the reference

vacuum port. Tak e measures to ass ure that vacu um oil cannot ret urn to the PG7601. If an opti onal AMH-38 automated mas s handler is b eing used, th e reference vacuum may be connect ed to the larger KF40 v acuum connection on the AMH-38 vacuum chamber.

 If an external barom eter and/or vacuum gauge is/are being used, establish

communications between the barometer/vacuum gauge and the PG7000 Platform by connecting the external device RS232 port to the PG7000 Platform Com2 port and setting up PG7000 to read and use an external barometer and/or vacuum gauge (see Section 3.11.5.4, 3.11.5.5). Set the external barometer head height (see Section 3.11.3.3).

 If an automated pressure generation/control component is being used,

establish communications between the automated pressure generation/control component and the PG7000 Platform by connecting the generation/control com ponent RS232 port to the PG700 0 Platf orm COM3 p ort and setting up PG7000 to use an automated pressure generation/control component (see Section 3.9.9).

 If an AMH automated m ass handling s ystem is being used, set u p the AMH

mass set and the AMH mass handler f ollowing the instructions in the AMH 38/AMH-100 Operation and Maintenance Manual.

Level the platform using the PG7000 Platform’s two leveling feet and the

level mounted on the front of the platform. (Or on the optional AMH mass handling system.)

PG7000™ OPERATION AND MAINTENANCE MANUAL

2.3.1.2 System Pressure Interconnections

Interconnect the PG7000 P latform, press ure generation/control com ponents and a test connection.

The pressure connection on the PG7000 TEST port is:

• PG7102/PG7601: DH200 (DH200 is equivalent to AE SF250C,HIP LF4, etc.). Adapt ers to c onver t the DH 200 c onnec tion t o 1/8 in. NPT fem ale and 1/8 in. swage are provided with PG710 2 and P G7601 P lat fo r m a cce sso ries .

• PG7202: DH500 (DH500 is equivalent to AE F250C, HIP HF4, etc.). Connect the gas test medium press ure control/generation com ponent to the TEST port. If the PG7202 is to be operated in oil, connect the oil pressure control/gener ation com ponent to the DR AIN port (the gas or oil component is disconnected when not in use, see Section 2.3.3).

• PG7302: DH500 (DH500 is equivalent to AE F250C, HIP HF4, etc.).

If using a standard interconnections kit such as PK-7600PPC/MPC P/N 3069508, PK-7600-PPC/MPC-DIF P/N 3070127 or PK-7100-MPCD-DIF P/N 3070226, see the instruction sheet provided with the kit for installation instructions. If an OPG1 or GPC1 generator/controller is being used, pressure interconnecting hardware is included with it. See its Operation and Maintenance Manual for connection instructions.

Note

2.3.1.3 Setting Up a Mass Set

Note

If installing an MS-AMH-xxx mass set for use with an AMH automated mass handling system, see the AMH-38/AMH-100 Operation and Maintenance Manual.

To install a PG7000 manual mass s et, plac e the mass loading tra y (provi ded wit h the mass set accessories) at the desired location then install the individual masses on the mass loading tray. See the AMH-38/AMH-100 Operation and Maintenance Manual for instructions on installation of an AMH mass set for automated mass handling.

 Caution

It is VERY IMPORTANT that the individual masses be installed on the mass loading tray in proper sequence. This will ensure that PG7000 mass loading instructions are executed properly (carefully follow the instructions provided in Section 2.3.1.3, Installing M asses on t he Mass L oading Tray).

Installing Masses on the Mass Loading Tray (Manual Mass Set)

PG7000 masses are shipped in reusable, molded shipping and storage cases. One of the cases conta ins a 4.0, 4.5 or 5 kg m ass and the masses of 2 k g and under, the ot he r c ase(s) con ta i n(s ) the main m ass es of 1 0 or 5 kg each. Eac h mass is packed in a sealed plastic bag and then placed in a protective shipping insert.

 Caution

2. INSTALLATION

To install the masses on the mass loading tray, proceed as follows:

 Open the shipping cases.  Install the main masses: The main masses (a series of 10 k g mass es if the

mass set is > 55 kg, a series of 5 kg masses if the mass set is < 60 kg) are installed horizontally aligned on the mass loading spindle.

 The main masses are sequentially numbered starting with he number 1.

The main mass with the highest sequential num ber is installed first at the bottom of the stack (i.e., the first m ass loaded on the tra y). The rest of the

main masses should be stacked upwards in descending order endin g with main mass sequential number 1. Be careful NOT to confuse the makeup mass (refer to next item) with main mass 1.

 Install the make up mass: The make up mass is a single mass sequentially

numbered 1. It has the same diameter as the main masses. It is a 9 kg mass if the main masses are 10 kg. It is 4 or 4.5 kg if the main masses are 5 kg.

The make up mass is placed on top of the main mass stack . It is always the

top of the stack.

 Install the fractionary masses: The fractionary masses are all the mas ses

of lower value than the main mass es and makeup mass. These are m asses of 5 kg and under for m ass sets with 10 k g main masses. T hey are mass es of 2 kg and under f or mass sets with 5 k g main masses. Fractionary masses of 1 to 5 kg are discs with a c entral ho le. Fractionary masses of 100 to 500 g are solid, small diam eter pucks. Fractionary masses of 50 g and under are grams masses packed and stored in their own separate storage case.

Fractionary mass discs and pucks are installed vertically in the corresponding slots

in the mass loading tray. Use a consistent s etup for the sequence number when there are two masses (e.g., always load sequential number 1 in the front).

2.3.2 installing a Piston-Cylinder Module into the Platform

To operate the PG7000 Pl atform, a piston-cylinder m odule must be installed in i ts mounting post. To install a piston-cylinder module in the PG7000 Platform, proceed as follows:

 Remove the PG7000 Platform mounting post plug. Unscrew the ORANGE plastic

mounting post plug that is installed in the PG7000 Platform mounting post. Rotate counterclock wise to r emove.

 Remove the piston-cylinder module from its bullet case. Select a piston-cylinder

module. Open the piston-c ylinder m odule bullet cas e by rotatin g its lid counterc lock wise. Remove the piston -cylinder module from the bullet case base by unthreading it from the case. Hold the piston-cylinder module body by the knurled area and rotate it counterclockwise.

Note

PC-7200 gas operated, liquid lubricated piston-cylinder modules are delivered with their lubricating liquid reservoir drained. The reservoir must be filled prior to using the pi ston-cylinder module. If installing a PC-7200 gas operated, liquid lubricated piston-cylinder module, see Section 5.3.3 for instructions on how to fill the module’s liquid lubr ication re servoir prio r to install atio n, the n conti nue t he proc edure from thi s poi nt.

 Caution

When reinstalling an oil or liquid lubricated gas piston-cylinder module in its bullet case, be sure to empty out any liquid that may have collected in the hole in the bottom of the case. Th e liquid will not comp ress, m aking i t difficul t to ful ly clos e the c ase an d co ul d res ul t in da magi ng it.

PG7000™ OPERATION AND MAINTENANCE MANUAL



module into the PG7000 Platform mounting post.

module clockwise until all

will be encountered in the second half of travel as the

 Place the piston-cylinder module in the PG7000 Platform mounting post. Place

the piston-cylinder module (thread down) into the PG7000 Platform mounting post (see Figure 4 below).

If installing the piston-cylinder module into a PG7302 or a PG7202 to be operated with oil, first use the oil generat ion control component to fill the counter bore in the mounting post with oil until it just starts to overflow.

 Purge the air from under the piston-cylinder module (PC-7300 modules only in

PG7302 or PG7202). Rotate the piston-cylinder m odule clockwise until all threads are

engaged and there is no gap bet ween the pis ton-c ylinder m odule and the m ounting post. Back the piston-cylinder module off slightly by rotating it counterclockwise 3/4 turn. Slowly supply additional oil to the mounting post from the pressure generation/control component. Watch the oil run of f tube on the bottom r ight of the platf orm. As soon as oil appears or can be seen flowing, stop the oil supply.

Screw the piston-cylinder

Rotate the piston-cylinder threads are engaged and there

is NO gap between the pistoncylinder module an d the P G7000 mounting post. Slight res istance

Note

2.3.3 Switching a PG7202 Between Gas Operation and Oil

piston-cylinder module O-rings seat in the mounting post.

Figure 4. Piston-Cylinder Module Installation

 Caution

• Low torque manual rotation is all that should be required to fully seat the

piston-cylinder module into the PG7000 mount ing post. Never force the piston-cylinder module into the mounting post.

• Alwa ys maintain PG7202 and PG7302 p iston- cylinder modules v ertical

with the piston cap up. Do not invert the assembly, as this might allow liquid to run up into the piston head and into the adjustment mass and cap. Liquid contamination of the piston head and cap changes the mass of the piston assembly and could lead to out of tolerance pressure definitions at low mass loads. If liquid contaminates the adjustment mass and cap, disassemble the module and clean it (see Sections 5.3.1, 5.3.4, 5.3.2.2).

Operation

PG7202 can be operated w ith gas as the pressuri zed medium using PC-7200 gas operated, liquid lubricated m odules or with oil as the pressurized m edium using oil operated PC-7300 modules.

2. INSTALLATION

Note

PC-7200 gas operated, liquid lubricated piston-cylinder modules can be operated in gas oil filled with oil and opera ted in oil. Oil operation of PC7202 modules is not recommended for routine operation. It can be useful in very specific crossfloating circumstances, particularly when establishing a calibration link between independent gas operated and oil operated piston gauges. When switching PC-7200 module between oil and gas and oil operation, see Section 5.3.3 for information on emptying excess oil from the modu le.

Switching a PG7202 from gas to oil operation

Note

Only the hig h pressure PC -7300 oil modules m ay be used in the PG7202 platfor m (P C-7300-1, -2, -5)

 Disconnect the gas generation/control system from the TEST port. Disconnec t the

tube at the DH500 T EST port connection on the back of the PG7202. Loosely i nstall a DH500 plug in the TEST port.

 Connect the oil generation/control system to the DRAIN port. Connect a tube from

the oil generation/contro l system to the PG 7202 DRAI N port and t ighten i t ( torque DH 500 glands to 15 Nm (12 ft.lb)).

 Fill the PG7202 mounting post with oil. Hand tighten the DH500 plug in the TEST

port. Use the oil ge neration/contro l component to fill the PG720 2 mounting p ost with oil. Fill to the edge of the second step in the m ounting post. Place a paper to wel under the TEST port plug and l oosen the D H500 plug allowing o il to run out until it is at the level of the first step in t he mounting post and t her e is no air in the run off oil. If there is still air in the run off, repeat the o peration. After f illing the mounting post, ti ghten the DH500 plug (torque DH500 glands to 15 Nm (12 ft.lb)).

 Install a PC-7300 oil operated piston-cylinder module in the PG7202 platform.

Install the module and purge the air from underneath it (see Section2.3.2).

 Operate with oil as the test medium. The PG7202 can no w be operated with oil as th e

test medium.

 Caution

The maximum working p ressure of the PG7202 platform when used in oil with a PC-7300 module is 200 MPa (30 000 psi). The maximum pressure when using a PC-7200 module is 110 MPa (16 000 psi). Do not exceed this limit.

Switching a PG7202 from oil to gas operation

 Remove the piston-cylinder module. Disinstal l t he P C-73 00 oil oper ate d pist on-cylinder

module for the PG7202 platform.

 Disconnect the oil generation/control system from the DRAIN port. Place a paper

towel under the DRAIN por t and disconnec t the tube t o the oil genera tion/con trol s ystem. Let all the oil run out of the PG7202 platform.

 Remove the DH500 plug from the TEST port. Place a paper towel under the TEST

port and remove the DH500 plug. Let all the oil run out of the PG7202 platform..

 Install a PC-7200 gas operated, liquid lubricated piston-cylinder module in the

PG7202 platform. Install the piston-cylinder module (see Section 2.3.2).

 Connect the gas generation/control system to the TEST port. Connect a tube from

the oil generation/cont rol system to the PG7202 TES T port and tighte n it (torqu e DH500 glands to 15 Nm (12 ft.lb)).

 Prepurge the oil from the PG7202 mounting post. Hold a paper towel lightly over the

DRAIN port opening. Leaving the drain port open, use the gas generation/control component to flow enough gas through the mounting post to just lift the piston.

PG7000™ OPERATION AND MAINTENANCE MANUAL

 Purge the PG7202 mounting post. Purge the PG7202 m outing pos t usin g t he s t andard

purging procedure (see Section 5.2.4) and finish by tightening the plug in the DRAIN port.

 Operate with gas as the test medium. The PG72 02 can now be operated with gas as

the test medium.

 Caution

The maximum working pressure of the PG7202 platform when used with a PC-7200 module is 110 MPa (16 000 ps i). Do no t exceed this limit.

2.4 Power Up and Verification

2.4.1 Power UP

Turn the PG7000 power ON by pressing th e power ON/OFF switc h on the rear panel of th e PG Terminal. Observe the PG terminal display as the terminal connects with the PG7000 Platform, tests, initializes and goes to the main run screen (see Section 3.7).

If <….Searching…..> displays for more than 5 seconds, the communications between the PG7000 and the PG T erminal are failing. Check that the PG7000 to PG Terminal cable is properly installed.

If PG7000 fails to reach the m ain run sc reen, ser vice m ay be required. Recor d the s equence of operations and displays observed and contact a Fluke Calibration Authorized Service Provider (see Table 32).

2.4.2 Check that On-Board Piston-Cylinder Module and Mass Set Information are Correct

PG7000 uses stored pist on-cylinder and mass set metrologica l information to calculate the reference pressures it defines (see Section 3 .1). For the pressur e values to be correct, the stored metrological information on the piston-c ylinder, mass set and m ass loading bell must be correct. Before using PG 7000 for accurate pressure definitio n, the validity of the stored information should be v erified. This cons ists of com paring the piston-c ylinder, mass set and mass loading be ll inform ation stor ed in PG7 000 to the i nform ation in t he current p iston-cylinder and mass set calibration reports.

To verify the PG7000 pist on-cylinder, mass set and mass loading bell information, use th e piston-cylinder and mass set viewing capabilities accessed by pressing [SPECIAL], <1PC/MS> (see Section 3.11.1). Compare all the information contained in the PG7000 piston-cylinder, mass set and mass loading bell files to the information on the current piston-cylinder, mass set and mass loading bell calibration reports.

2.4.3 Set Local Gravity Value

PG7000 uses the value of local acceleration due to gravity (gl) in its calculation of the reference pressure it d ef ine s (s ee Sect ion 3.1). The cor rec t va lue of local ac c eler atio n du e to gravity at the site of PG7000 use must be entered. This is accomplished by pressing

[SPECIAL], <6gl> (see Section 3.11.6) and editing the value of local gravity.

2.4.4 Setup Pressure Equation Va riable Input Sources

PG7000 uses man y variables in calculating defined pres sures. The sources of the variables are determined by the current SETUP file. SETUP files are viewed, created, edited and selected using the SETUP function accessed by pressing [SETUP] (see Section 3.10). A factory SETUP file is available and already selected on a ne w PG7000, but the operator may desire to customize it. The factory setup file assumes that PG7000’s internal measurement values will be used whenever possible.

2. INSTALLATION

2.4.5 Check Proper Operation of Ambient Condition Measurements

PG7000 automatically measures ambient conditions and uses these conditions in its pressure calculations.

To verify that the ambient condition measurements are operating properly proceed as follows:

• Displ ay current ambient condition readings: Press [AMBIENT]. The ambient conditions

run screen is displayed (see Section 3.9.6).

• Verify proper ambient condition readings: Compare the ambient condition values

displayed to the actual values of ambient conditions. Refer to the ambient condition measurement specifications when evaluating the ambient readings (see Section 1.2.1.2).

Note

• The unit of measure in which ambient pressure is displayed is the same as

the unit selected by pressing [UNIT] ( see Section 3.9.3). Units of measure in which other ambient condition values are expressed cannot be changed.

• PG7000 allows the source of ambient condition value s used in reference

pressure calculations to be specified. The source may be PG7000’s onboard measurements, default values or operator entered values. See Section 3.10 for information on specifying the source of ambient condition values used by PG7000 in reference pressure calculations.

2.4.6 apply pressure to THE piston-cylinder module

Note

This section assumes that the PG7000 system has already been set up, including pressure interconnection (see Section 2.3).

 Caution

Before appl ying press ure to the PG 7000 syst em, be sure th at all pres sure vessels and connections are rated for the pressure levels that will be applied and that all connections have been properly tightened.

Continuing with the PG7000 set up and check out requires applying pressure to the pistoncylinder module and floating the piston.

Proceed as follows:

 Turn OFF automated piston rotation (if present) and automated pressure

generation (if present). This will prevent the automated rotation and pressure

generation features (if present) from interfering durin g verification of these features (see Sections 3.9.8 and 3.9.9 for information on automated piston rotation and pressure generation).

 Load mass on the piston. Install the m ass loading bell on the piston. Then load th e

make up m ass (9, 4.5 or 4 k g depending o n the mas s set) (see Sectio n 2.3.1.3). If the PG7000 platform is equipped with AMH autom ated mass handling, press [ENTER] and enter a low value of pressure or mass to cause mass to be loaded onto the piston.

 Float the piston. Use the pressure generation/control component of the PG7000 system

to apply pressure un der the piston thr ough the PG7000 Platform TEST port. The piston will float at a pressure approximately equal to the piston mass to pressure conversion factor multiplied by the m ass load in kg. The piston-cylinder conversion f actor is marked on the top of the piston cap and is in either kPa or MPa per kilogram [kPa/kg or MPa/kg].

PG7000™ OPERATION AND MAINTENANCE MANUAL

If the piston cannot be floated becaus e it immediately sinks down from a float position, there is a leak in the pressure system. Identify and eliminate leaks until the piston, once floated, falls at a rate less than the nominal f all rate given in the specifications of the piston-cylinder module being used (see Section 1. 2. 2).

2.4.7 Check Proper Behavior of Mot orized Piston Rotation

The motorized rotation feature can be set to engage and disengage automatically as needed to maintain the floating piston rotating within a set rotation rate range when floati ng, and to stop rotati on before mass manipulati on to set a differen t pressure occ urs (see Sectio n 3.9.8). Motor ized piston rotation c an a lso b e acti vat ed m anua ll y by press in g [ by pressing and holding [

Turn automated rotat ion OF F by press ing [ROTATE] and selecting <1off>. Loa d at least the mass bell on the piston, float the piston and press [ motorized rotation system should engage and cause the mass bell and piston to begin rotating. Within 5 to 30 seconds , depending o n the m as s load, th e rot ation r ate sh ould r each 80 rpm for PG7601 or abo ut 50 rpm for PG7102 or PG7302. Current rotat ion rate can be observed by pressing [SYSTEM] (see Section 3.9.5).

] and then pressing [←] (see Section 3.9.13).

Note

]. Stopping piston rotation can be activated

]. When the piston is floating, the

2.4.8 Check Proper Operation of Pis t on Behavior Measurements

Float the piston and rotate it (see Sections 2.4.6 and 2.4.7). Press [SYSTEM] once to r each the f irst SYST EM run s creen. Ver ify that the piston p osition,

piston fall/rise rate, pisto n rotation rate and piston r otation decay rate ar e indicating correc tly (see Section 3. 9.5). The piston positi on r ead in g s yst e m may be calibrated us ing an on-board procedure if necessary (see Section 5.2.2). Calibration of piston position is recommended when installing a new PG7000 and regularly after installation.

Press [SYSTEM] again to r each t he sec ond SYST EM run s cre en. Ver ify th at the pisto n-cylinder temperature and temperature rate of change are indicating correctly (see Section 3.9.5). If checking a PG7601 Platform, verify that the vacu um reference measurem ent is operating correctly (see Section 2.4.8. 1).

2.4.8.1 Verify Vacuum Reference (PG7601 Only)

PG7601 includes provisions for establishing and measuring a vacuum reference. To verify the vacuum reference capability:

 Install a piston-cylinder module (see Section 2.3.2).  Install the bell jar on the PG7601 Platfor m (the bell jar aligns on th e PG7601

vacuum plate and seals its elf). If using AMH-38 autom ated mass handling, install the AMH-38 mass handler (see the AMH-38/AMH-100 Operati on and Maintenance Manual).

 Apply a vacuum through the r eference vacuum port (KF25 port on front left

side of platform or KF40 if using the optional AMH-38 automated mass handler).

 Press [SYSTEM] twice to observe the value of vacuum read by the

PG7601’s built-in vacuum gauge.

If a vacuum pump of adequate capacity has been correctly connected to the reference vacuum port, the vacuum read by the PG7601 built-in vacuum gauge should go to 4 Pascal [Pa] or lower in less than five minutes on the f irst pump down and two to three minutes on immediately subsequent pump downs.

2. INSTALLATION

If this performance is NOT achieved:

• The vacuum pump may be inadequate.

• T he connection of the vacuum pump to the PG760 1 platform of AMH-38

may have leaks or excessive restrictions.

• T he PG7601 built-in vacuum gauge or external vacu um gauge may be incorrect.

• There may be a leak in the PG7601.

2.4.9 Check Automated Pressure Generation (If Present)

 Caution

To check automated pressure generation/control:  Verify that the automat ed pressure generation/control c omponent is properly connecte d

to the system (see Section 2.3.1.2).

 When oper ation has returned to the main run screen, turn ON automated pressure generation

control, if available, by pressing [GEN] and selecting <1on> (see Section 3 .9.9) .

 Press [P

[ENTER] and enter a pressure value to be generated and follow the mass loading

instruction (see Section 3.6) .

 Verify the pressure genera tion/co ntrol com ponent prop erly gener ates press ure and f loats

the PG7000 piston.

OR M], <1pressure> to select press ure entr y mode (see Section 3.9 .12). Press

2.4.10 Check/Set Security Level

PG7000 has a security s ystem based on User Leve ls. By default, the secur ity system is set to low and NO password is required to change the securit y level. See Section 3.11.4.5 for information on the s ecurity s ystem. As part of the PG 7000 startup, set your desired securit y level and a password.

 Caution

PG7000 is delivered with the security level set to low to avoid inadvertent altering of critical internal settings but with access to changing security levels unrestricted. It is recommended that the low security level be maintained at all times and passw ord prote ction b e imple mented if cont rol over setting of security levels is desired.

2.4.11 Additional Pr e c a uti ons t o Tak e Bef ore Ma king Pressure Measurements

Before using PG7000 to make accurate pressure measurements, consider the following:

• Select/activate the correct piston-cylinder module, mass set and mass loading bell

(see Sections 3.9.2, 3.11.1.10, 3.11.1.15).

• If us ing an automated pressure generation/ control component with automated pressure

generation, set the pressure controller’s upper limit (UL) (see Section 3.9.9.3).

• Enter the correct value of local gravity at the site of use (see Section 3.11.6).

• Consider head corrections (see Sections 3.9.7 and 3.11.3).

• Level the PG7000 Platform properly (see Section 2.3.1.1).

PG7000™ OPERATION AND MAINTENANCE MANUAL

• Select the correct press ure unit of m easure and measurem ent mode (see Sect ions 3.9.3

and 3.9.5).

• Verify that the settings for the sources of variables to be used by PG7000 in its

calculations of reference pressures are those desired (see Section 3.10).

• Verify that the piston-cylinder module is correctly cleaned and operating properly

(see Section 5.3).

• PG7202 only: Ensure that the piston-cylinder module liquid reservoir is filled (see

Section 5.3.3).

• Verify that there are NO leaks in the pressure system.

2.5 Short Term Storage

The following is recommended for short term storage of PG7000.

 Remove all masses from the PG7000 Platform (manual mass set only).  Vent all circuits to atmosphere.  Turn OFF power using the power switch on the rear of the PG7000 Terminal.

C over the PG7000 Platform and m as s set with th e du st c overs inc luded in th e pl atf orm and mass set

accessories (not used with AMH mass handling system).

3. General Operation

3.1 Fundamental Oper ati ng Principles

PG7000s operate on the pr inciple of the pis ton gaug e in whic h pressur e is def ined b y balanc ing it agains t a known force on a known ar ea (see Fig ure 5). T he known are a is def ined b y a vertica lly m ounted pis ton rotating in a c ylinder an d t h e known force is app li ed t o the pis to n by loading it wit h known mass subj ec ted to acceleration due t o gravi ty. W hen the f orce app lied b y the pr essur e and the forc e applie d b y the m ass accelerat e d by gravit y are in eq u i li br i um, the pisto n f l o ats and the pr es sure und er t h e p iston remains constant. The pressure can be calcul ated following th e equation i n Figure 5 (see also, Section 7.2). Generall y, the pressurized f luid under the piston als o lubricates the gap bet ween the piston and the c ylinder. PG7202 uses a unique gas operated, liquid lubricated piston-cylinder (see Section 3.1.1).

Figure 5. Piston Gauge Operating Principle

The PG7000 Platform is designed to mount a variety of piston-cylinder sizes, al low pres s ure to b e ap pl ied under the piston and allo w masses to be loaded on to p of the pis ton. Ther e are diff erent PG700 0 m odels depending upon whether the pressure medium is oil or gas and whether a vacuum reference is needed.

The measurement uncer tainty in the press ure defined b y the piston gauge d epends on the uncerta inty in the effective area of the piston-cylinder and the force applied by the mass accelerated by gravity. PG7000 stores the calibrated values of the piston-c ylinders and masses it uses in on-board files (see Section 3.11.1). To determine the effective area of the piston-cylinder and the force applied by the masses under actual oper ating conditions, a number of influences on these values must be quantified and taken into consideration. For this reason, PG7000 includes extensive features to monitor the behavior and conditio ns of the pis ton-c ylinder as well as am bient c ondit ions that af fect pr essur e definition (see Sections 3.9.5 and 3.9.6) . PG700 0 uses the pist on-cylinder, mass and am bient conditio n information to calculate the pressure defined by a given mass load or the mass load needed to define a given pressure (see Secti on 7 .2) . T he s our ce of each value used b y PG7000 in its c alculat io ns c an be se lec ted by the user between PG7000’s internal measurements, default values or user entered values. These sources are defined in SETUP files (see Section 3.10).

PG7000™ OPERATION AND MAINTENANCE MANUAL

Once PG7000 has been set up, it is used in day-to-day operation either to define pressures applied to a device or system under test or to measure a stable pressure. To interface with the PG Terminal , the oper ator:

 Selects the appropriate piston-cylinder to cover the pressure range (see Section 3.11.1.5).  Selects the desired pressure unit of measure (see Section 3.9.3).  Selects the desired pressure measurement mode (gauge, absolute, differential) (see Section 3.9.4).  Sets the head difference between the PG7000 and the device under test (see Section 3.9.7).  Selects mass to pressure or pressure to mass operating mode (see Section 3.9.12).  Enters a pressure to define or a current mass load to calculate (see Section 3.9.11.1 and 3.9.11.2).  Loads masses by hand or with optional AMH automated mass handler, floats piston and defines

pressure.

3.1.1 Gas Operated, Liquid Lubric a t e d Piston-Cylinder Operating Princi ple (PG7202)

PG7202 provides v ery high pressure gas pressur e operation using a unique gas operated, liquid lubricated piston-cylinder system.

The principle of operation of the gas operated, liquid lubric ated piston-cylinder is simple but very effective (see F ig ure 6 ) . T he measured gas pres s ure, Pg , is a pp lied to the bottom of the piston and to the top of a liquid reservoir located around the cylinder. The reservoir is connected to the gap between the piston and the cylinder through lateral holes near the bottom of the cylinder, al low ing li qu id f r om the res er voir to ent er the gap. The pressur e of the liquid in the gap, Pl, is equal to t he gas press ure Pg, plus the liquid head, h. Therefore, th e liquid pressure in t he gap is al ways higher than the g as pressure b y the amount of the liquid head regardless of the gas pressure value. Since h is small and the space between the piston and cylinder is typicall y < 1 micron, the bleed of liquid f rom the bott om of the c ylinder towards the gas press ure is extremely sm all. The mounting post of the 7202 pis ton gauge is configured so this minute amount of liquid drops directly into a sump that is deadened (see Section 5.2.4, 3. 1.1) and no t in the flow path of test gas into and o ut of the system . Though molecules of the liquid m ay migrate through the gas, no sign ificant contaminatio n of the test system occurs. Because the liquid reservoir is contained in the piston-cylinder module, piston-cylinders can be removed and instal led in the PG7202 piston ga uge platform with no loss of liquid fr om the reser voir. All PC-7 200 pist on-cylinder modules can be deliver ed using Krytox, a fluorinate d synthetic fluid, to lu bricate the piston-cylinder in applicat ions where the system must r emain perfectly free of hydrocar bons (e.g. when ca librating instrument ation for oxygen service).

Note

3. GENERAL OPERATION

allow very commonly used

are for execution,

Figure 6. Gas Operated, Liquid Lubricated

Piston-Cylinder (PC-7200) Operating Principle

3.2 Keypad Layout And Protocol

PG7000 has a 4 x 4 keypad for local operator access to direct functions, function menus and for data entry.

 The Function/Data keys

functions to be accessed directly from t he main run screen by a single keystroke. The name of the function is on the bottom half of the key (see Section 3.9.1). These keys enter numerical values when editing.

 The Editing and Execution keys

suspending execution, backing up in menus and editing entries.

 The Menu/Data keys provide access t o function menus from

the main run screen. The menu name is on the bottom half of the key. The SETUP menu is for more frequently used functions. The SPECIAL menu is for functions that are NOT generally used as a part of day to day operation. These keys enter numerical values when editing.

Figure 7. PG7000 Keypad Layout

Key press co nfirm ation is pro vide d by bo th tac tile an d audi ble fe edbac k. A sing le beep c onf irm s a valid e ntr y. A descendin g two note tone signals an invalid entry. The audible val id entr y feedbac k can be s uppressed or modified by pressing [SPECIAL] and selecting <5prefs>, <2sound> (see Section 3.11.4. 2).

Pressing the [ENTER/SET P] key generally causes execution or forward movement in the menu tree. [ENTER/SET P] is also used to enter a command to set a pressure.

Pressing the [ESCAPE] key generall y allows movement back in th e menu tree and/or causes execution to cease or suspend without changes being implemented. Pressing [ESCAPE] repeatedly eventually returns to the main run screen. From the main run screen, pressing [ESCAPE] allows momentary viewing of the PG7000 identification screen.

PG7000™ OPERATION AND MAINTENANCE MANUAL

*** 100.4755 kPa g h + 0.1 mm 10.00564 kg

Pressing the [+/-] key changes a numerical sign when editing. It also togg les through multiple scr eens when available.

Pressing the [←] and [→] keys when editing a llows reverse and f orward cursor movem ent when editing data entry. These keys are also used to scroll through choices.

Menu selections can be made by pressing the n umber of the selection direc tly or by pressing [←] and

→] to place the cursor on the number of the desired selection and pressing [ENTER].

[

Note

Some screens go beyond the two lines provided by the display. This is indicated by a flashing arrow in the second line of the display. Press [

←] and [→] to move the cursor to access the lines that are NOT visible or directly enter the number of the hidden menu choice if you know it.

3.3 Sounds

The PG Terminal is equipped with a variable frequency tone device to provide audible feedback and alarms. Som e sounds can be modified and all sounds can be suppressed (see Section 3.11.4.2) . Sounds are used for the following indications:

Valid key press

Invalid key press

Piston left end of stroke high

or low

Brief high frequency beep. Three rapid, low frequency beeps. Three rapid valid key press beeps. Piston was at low stop or high stop and

just entered spring zone (see Section 3.5).

3.4 Pressure Ready/Not Ready Indication

The three characters on th e top l ine, f ar lef t, of the m ain r un sc reen pr ovide a pr essur e Ready /Not R eady indication. This indic ation is intended to g ive the user a clear and objective indication of when PG7000 conditions are such that the value of pressure it is defining is valid and in tolerance. T here are three Ready/Not Ready ind ication c haracters t o indicat e the s tatus of the t hree main R eady/No t Ready criteria. The Ready/Not Ready indication character s are shown o n the first line, top left hand side, o f the main run screen.

1. Pisto n pos ition and vertical movement.

2. Piston rotation.

3. Reference vacuum (PG7601 in absolute by vacuum measurement mode only).

For each Ready/ Not Rea dy in dicat ion c harac ter , <*> indicates a Ready condit ion. T heref ore, <***> or <** > indicates that all cond itions necessar y for an in tolerance pr essure definition are present. An y indication other than <*> indicates Not Ready.

See Sections 3.4.1, 3.4.2 and 3.4.3 for details on each of the three Ready/Not Ready indicating characters.

Note

The criteria used to distinguish between Ready and Not Ready conditions can be customized by the user (see Sections 3.4.1, 3.4.2, 3.4.3).

3.4.1 Piston Position Ready/Not Ready

The piston position Rea dy/Not Ready c haracter indicates Ready or Not R eady based on the position of the piston in its vertical stroke (see Section 3.5) and an automated measure generation status (see Section 3.9.9). This ensures that pressure definitions will be made with the piston not mor e than a certain dist ance from m id-float position and that meas urements will not be made while the action of an automated pressure controller may influence the pressure.

The piston position Ready/Not Ready character is t he first character f rom the left on the top line of the main run screen.

3. GENERAL OPERATION

The piston position Ready/Not Ready criter ion is determined by the current S ETUP file and can be customized by the user (see Section 3.10).

Piston position Ready /N ot Ready character indications include: <*> Piston position Ready ( within the posit ion limits specified in the cur rent SETUP f ile)

(see Section 3.5).

<↓> Piston position Not Ready, low (below t he position limits specified in the current

SETUP file, see Sec ti on 3. 10) . T he < position to alert the user that this indicator is Not Ready.

<↑> Piston position Not Ready, high (above the positio n limits specified in the current

SETUP file) (see Sec tion 3.10). The < position to alert the user that this indicator is Not Ready.

<?> Piston position not known (current specified mass load is less than the load of the piston

+ bell). The bell must be installed for PG7000 piston position measurement to operate correctly so piston posi tion values shown are not valid when the bel l is not in stalled.

<T> Tare PG7000 is Not Ready (PG7102 and PG7202 only). Indicates that piston

position or rotation rate is Not Ready on the tare PG7000 in high line differential mode (see Section 3.9.4.2).

↓> flashes if the pis ton is not at t he b ottom stop

↑> flashes if the piston is not at the to p stop

Note

• Piston position always indicates Not Ready if automated pressure

generation is adjusting pressure, regardless of actual piston position.

• In PG7102 and PG7202 high line differential pressure mode (see

Section 3.9.4.2), the piston position Ready/Not Ready indicator applies to the pistons of both the tare and the reference PG7000. For Ready to be indicated, both pistons must be within the ready limits for piston position.

3.4.2 Piston Rotation Ready/ Not Re a dy

The piston rotation Rea dy/Not Ready character in dicates Ready or Not R eady based on the rotation rate of the piston.

The piston rotation Ready/ Not Ready character is the sec ond character from the left on the top line of the main run screen.

The piston rotation rate Ready/Not Ready criterion is specific to the currently active piston-cylinder module and can be edited by the user (see Sections 3.11.1.1).

Piston rotation rate Ready/Not Ready character indications include: <*> Rotation rate Ready: Rotation rate is within the r otation rate limits specified in the

current piston-cylinder module file) (see Section 3.11.1.1).

<> Rotation rate Not Ready, low: Rot ation rate is less than the lo wer rotation rate limit

specified in the current piston-cylinder module file (see Section 3.11.1.1) or motorized rotati on system is currently engaged. Note that the low rotation limit is automatically reduce d when the mass loaded on the piston is less than 3 kg. The

<> flashes if the piston is floating to alert the user that this indicator is Not Rea dy .

<?> Rotation rate not known: Current specified mass load is less than the load of the

(piston + bell). The bell must be installed for PG7000 piston rotation rate measurement to operate correctly so piston rotation rate cannot be measured when the bell is not installed.

PG7000™ OPERATION AND MAINTENANCE MANUAL

At mass loads less then 3 kg the low rotation limit is automatically reduced to an operational minimum to maximize free ro tati o n time .

In PG7102 and PG7202 high line differential pressure mode (see Section 3.9.4.2), the piston rotation rate Ready/Not Ready indicator applies to the pistons of both the tare and the reference PG7000. For Ready to be indicated, both pistons must be within the ready limits for piston rotation rate.

3.4.3 Vacuum Reference Ready/Not Ready (PG7601 Only)

The vacuum reference Ready/Not Ready character is onl y used wit h PG760 1, as it is the only PG7000 model with vac uu m ref erenc e capabilit y. It is onl y active whe n oper atin g in absolute by vacuum mode (see Sect ion 3.9. 4).

The vacuum reference Ready/Not Ready charac ter indicates Ready or Not Ready based o n the value of refer ence vacuum when making measurem ents in absolute by vacuum mode. This ensures that definition s of abs olute pres sure with a vacu um ref erence will b e made with the vacuum under the PG7 601 bel l jar lo wer tha n a sp ecified value. When the vacuum is not low enough, vacuum measurement errors may be excessive.

The vacuum reference Ready/Not Ready char acter is the third ch aracter from the left on the top line of the main run screen.

The vacuum reference R eady/Not Ready criterion is determined b y the current SETUP f ile and can be custom ized by the user (see Section 3.1 0). The vacuum reference criterio n is a fixed value that c an b e c ustom ized b y the user whe n the vacuum ref erenc e selec tion i n the SETUP f ile is internal. If th e selectio n in the SET UP file is NOT internal, the vacuum refere nce Ready/Not Ready character always indicates Ready and the value cannot be customized.

Vacuum reference Ready/Not Ready character indications include: < > (Blank) Vacuum referen ce Ready/Not Ready is not in use. This is not a PG7601;

or if PG7601, current measurement mode is not absolute by vacuum.

<*> Vacuum reference Ready. Vacuum value is below limit specified in the current

SETUP file if s ource is internal OR sourc e is default or user and the vacuum value is not a measured value (see Section 3.10).

< > > Vacuum refer ence Not Ready. Current SETUP file source for vacuum is internal

and vacuum value is above the limit spec ified (see Se ction 3.10). The < the piston is floating to alert the user that this indicator is Not Ready.

Note

>> flash es if

3.5 Piston Position

When operating a PG 7000 piston gauge, referenc e pressure values are defined by loading k nown mass values on the piston and adjusting the pressure to float the piston. Piston position is measured and displayed real time on the MAIN run s creen (see Section 3.7) and in the first SYST EM run screen (see Section 3.9.5). Piston position is used as a criterion for the Ready/Not Ready indication as valid measurements can only be made when the piston is in the correct position (see Section 3.4.1).

The full piston stroke is ± 4.5 mm from the midstroke position. The stroke is divided into different positions and zones as illustrated in Figure 8. These zones are:

• High and low stops: The piston is at the m inimum or m aximum end of str ok e. The press ur e app lied to the piston is higher (at high stop) or lower (at low stop) than th at corr espond ing to the m ass loaded on the piston. The high and low stop positions are fixed.

• High and low spring zones: The combination of pressure and the force of the high or low stop springs have caused t he piston to leave the stop. The pres sure applied to the piston is withi n the equivalent of 2 kg of the press ure cor respond ing to th e m ass loaded on t he pis ton. T he high an d low spring zones indicate the piston is about to float. The spring zone positions are fixed.

3. GENERAL OPERATION

• High and low measurement zones: The piston is within the zon e in which a Ready measurement can be made (see Secti on 3.4.1). The pressur e applied to the pisto n is the pressure corr esponding to the mass loaded on the piston. The default value of the high and low measurement zones is ± 2.5 mm around midstroke position. This value can be adjusted in the SETUP file (see Section 3.10).

• Midstroke: The piston is at the middle of its stroke. The bottom of the piston (or its equivalent for hollow pistons) is at the reference level marked on the mounting post (see Section 3.9.7). There is equal stroke available to the high and low stops.

Note

The piston position monitoring system is driven by the internal ring in the base of the mass loading bell. When the bell is not installed, piston position cannot be measured. If the current mass load is less than the mass of the piston + bell, PG7000 will display < ---- > where piston position is normally displayed. If the current mass load is greater than the mass of the piston + bell but the bell is not actually installed, the piston position indication is not valid.

Figure 8. Piston Stroke and Zones

3.6 Mass Loading Protocol

 PURPOSE

To provide the operator with mass loading instructions and allow mass entry in convenient nominal values which PG7000 can accurately convert to measured mass values to determine the actual mass load.

 PRINCIPLE

All PG7000 manual mas s set masses of 0.1 kg and above, including those in t he mass set, the mass loading bell and the piston assembly, are adjusted so that their true mass is within ± 20 ppm of their nominal value. The nominal value is m arked on each m ass. Each m ass’s actual individual value is measured more accurately than ± 20 ppm and reported in the mass set, mass loading bell or pistoncylinder module calibration report. These measured actual values are used by PG7000 in all of its defined pressure calcu lations. The nominal mas s values, and the sequent ial numbers of the nominal masses when there are severa l of the same value, ar e used by PG7000 to des cribe the m ass to load or the mass that is loaded. Following a few simple mass loading rules allows PG7000 to accurately transform actual mass values into nominal mass values and vice-versa so that mass loading instructions to the operator and the operator mass entries can be made in simple nominal mass instructions while representing actual individual mass values.

Since the nominal mas s values written o n the masses and the actual values of the individual mass es are different, in press ure to mass m ode (see Sec tion 3. 9.12) the a ctual m ass v alue loaded on t he pisto n will be different from the mass loading instruction. In the same manner, in mass to pressure mode the nominal value of the mass load that the operator enters is different fr om the actual mass loaded on the piston. The mass value shown in the MAIN run screen (see Section 3.7) is always the actual mass value. The mass loading instruction given i n pressure to mas s mode and th e mass value

PG7000™ OPERATION AND MAINTENANCE MANUAL

Load nominal mass:

kg and gg.gg g

entered by the operator in mass to pres sure mode is al ways the nominal m ass value. If PG7000 mass loading protocol is f oll o wed , the c on vers i on f r om nominal mass to actual m a ss occurs corr ect ly al lo wing very simple nom inal mass loading and accoun ting for the operator wh ile using very accurate m easured mass values for metrological calculations.

 OPERATION

Note

To avoid wear to masses and to the piston-cylinder module end of stroke stops, the piston should not be rotating when masses are loaded or unloaded. Before loading masses, stop piston rotation by hand or using the motorized rotation system (see Section 3.9.13).

PG7000 instructions to the operator of m ass to load, and operator entr ies of the m ass that is loaded, are always expressed i n terms of nominal mas s within 0.1 k g and in term s of grams for values under 0 .1 kg. This protocol is also followed when using the AMH automated mass handler.

In pres sure to mass mode, the instruction of the mass to load to achieve the requested pressur e is formatted:

In mass to pressure m ode, the entry of the mas s currently loaded on the piston is formatted:

kkk.k

kkk.k and gg.gg must be expressed and loaded following the mass loading rules below:

Mass Loading Rules

See Sections 2.3.1. 3,

Installi ng Masses On The Mass Load ing Tra y

and 3.6. for PG 7000 m ass set pr inciples and protocol information. Refer to display examples immediately above to identify kkk.k and gg.gg. See EXAMPLES: Mass Loading below for mass loading examples.

PG7000 mass loading entries and instructions are always formatted: kkk.k kg and nn.nn g

• T he mass set being us ed must be select ed as the ac tive mass s et (see Section 3.11.1.10) and must

be properly set up prior to use (see Section 3.11.1.6).

• kk k.k is made up of the piston, the mass loading bell and mas s set masses of 0.1 kg and greater.

When using an AMH mass set, the binary mass carrier and mass lifting shaft are also included.

• kkk.k always includes the mass loading bell and then the makeup mass, if possible.

• kkk.k is made up of the largest masses possible rather than a combination of smaller masses.

EXAMPLE: To load 5 kg on a PG7601:

 USE the piston (0.2 kg) + the mass loading bell (0.3 kg) + the 4.5 kg makeup mass.  DO NOT USE the piston + the mass loading bell + 2 kg #1 + 2 kg #2 + 0.5 kg #1.

When several masses of the same nominal value are included in kkk.k, they are loaded in num erical sequence, low to high.

EXAMPLE: When loading three 5 kg masses:

 USE 5 kg mass #1, #2 and #3.  DO NOT USE 5 kg mass #4, #3, #1.

This rule will be followed automatically if masses are installed and used as described in Section 3.6.

• gg.gg is made up of mass from the gram trim mass set (masses of 50 g t o 0.01 g). Thes e masses

can be loaded in any order.

3. GENERAL OPERATION

 Caution

When PG7000 provides mass loading instruct ions and calculate s the true mass of the mass currentl y loaded, it assumes that the m ass set in use has been set up correctly (see Section 2.3.1.3). For PG7000 mass loading protocol to operate properly, the mass set in use must be EXACTLY the mass set that has been defined by the add and/or edit mass function (see Section 3.11.1.6).

Note

In PG7102 and PG7202 High Line Differ ential mode (see Secti on 3.9.4.2), there are two types of mass loading instructions: line pressure setting and differential pressure setting. Both follow conventional PG7000 mass loading protocol. The line pressure mass instructions are always given with 0.1 kg resolution. This is to preserve the smaller masses for setting the dif ferential pressure. Th e differential pressure mass loading instructions follow conventional mass loading protocol using the masses that remain after the line pressure has been set. It may be necessary to adjust th e line pressu re value to a ssure th at ad equ ate ma ss es rem ain to set the desired differential pressure. For example, if the line pressure requires loading 10.6 kg, the 0.5 and 0.1 kg masses w ill b e used to set the line pressure and will not be available if they are needed to set the differential pressure. If this situation occurs, consider adjusting the line pressure so that it is set using a whole number of kilograms, in this example 10.0 or 11.0 kg.

EXAMPLES: Manual Mass Loading

• Mass load ing i ns truc tion using a PG7601 an d a

35 kg mass set:

12.3 kg and 32.33 g

Load:

 piston (0.2 kg)   bell (0.3 kg)   4.5 kg #1 (makeup mass)   5 kg #1  2 kg #1  0.2 kg #1  0.1 kg #1  32.33 g from trim mass set

• Mass loading instruction using PG7302 and an 80 kg mass set:

77.6 kg and 10.45 g

Load:

 piston (0.2 kg)  bell (0.8 kg)  9 kg #1 (makeup mass)  10 kg #1 through #6  5 kg #1  2 kg #1  0.5 kg #1  0.1 kg #1  10.45 g from trim mass set

PG7000™ OPERATION AND MAINTENANCE MANUAL

prvPRESSURE1 unit aGh +N.N mm NN.NNNNN kg

3.7 Main Run Screen

The PG7000 m ain run scr een is its hom e display that i s reached upo n powering u p and from which other functions and menus are accessed. It is the top level of all menu structures.

The main run screen is where PG7000 is left in n ormal operation. It displays the pressure defined by PG7000, Ready/Not Ready condition and a variety of other information.

Note

The screen described below is called the MAIN run screen. The SYSTEM and AMBIENT screens (s ee Sections 3.9.5 and 3.9.6) are a lso run screens in the sense that all the other functions may be accessed directly from them and pressure or mass entries may be made from them. See Section 3.8 for a description of PG7000’s main menu/function structure.

3. <unit>: Current pressure unit of measure (see Section

3.9.3).

4. Current measurement mode. <a> for absolute, <g>

for gauge, <d> for differential or high line differential (see Section 3.9.4).

5. Automated pressure g eneration st atus. <G> if aut omated

pressure generation is ON. The <G> flashes if automated pressure generati on is ON and acti ve, blank if automated pressure generation is not ON (see

1. <prv>: Three Ready/Not Ready indication characters (from left to right: piston position, piston rotation, vacuum reference) (see Section 3.4). Eac h character indicates as follows:

<p>: Piston Position Ready/Not Ready. <*> when Ready, < measuring zone, < below measuring zone, <?> if piston position not available or out of range. Flashes if condition is Not Ready and piston is floating (see Section 3.4.1). Indicates Not Ready when automated pressure generation is adjusting pressure.

<r>: Piston Rotation Ready/Not Ready. <*> when Ready, <<> when Not Ready due to pist on rotation rate too low or motorized rotation engaged, <?> if piston position not ava ilable or o ut of ran ge. Flas hes if con dition is Not Ready and piston is floating. (see Section 3.4.2).

<v>: Vacuum Reference Ready/Not Ready (PG7601 only). <*> when Ready, <v> if Not Ready due to vacuum not below ready limit. Flashes if condition is Not Ready and piston is floating (see Section 3.4.3).

2. <PRESSURE1>: Numerical value and sign of the pressure defined by PG7000 with current mass loaded on current piston when all Ready/Not Ready indication characters indicate Ready.

↑> when Not Ready due to piston above

↓> when Not Ready due to piston

Section 3.9.9).

6. DUT head correction status. <h> if a head correction is currently being applied, blank if head height is zero (see Section 3.9.7).

7. <NN.NNNNN kg>: Current mass l oad in actual mass (assuming mass loading instructions have been followed and/or mass loading entries are c orrect (see Section 3.6).

8. <± N.N mm>: Current piston position in millimeters from midstroke position. Positive values are above midstroke, negative values below. Indicates < ---- > if piston position not available or out of range (see Section 3.5).

Note

• When a number is too large to display in

the allocated screen space, PG7000 displays <********> or <OVERFL OW>.

• PG7000 has a screen saver function that

causes the display to dim if NO key is pressed for 10 minutes. Pressing a key restores full power to the display. The screen saver activation time can be changed or screen saving can be completely disabled (see Section 3.4.5.1).

PG7000™ OPERATION AND MAINTENANCE MANUAL

DELAY

3.8 General Function/Menu Flow Chart

Local operator inter face with PG7000 is provided by PG T erminal keypad and dis play. Normal PG7 000 operation is organized around run screens from which functions and menus are accessed. The run screens include:

• MAIN run screen: Displays Ready/Not Ready, defined pressure, piston position and mass load.

• (2) SYSTEM run screens: Display piston position, rotation, temperature and reference vacuum

(PG7601 only).

• AMBIENT run screen: Displays ambient pressure temperature, relative humidity and local gravity. The flow chart below outlines the operating protocol of the run screens and associated key presses.

POWER

RESET

INTRO SCREEN

5 SEC

≈

ESC

MAIN RUN SCREEN

ESC

TO PREVIOUS RUN SCREEN

ESC

SYSTEM

SYSTEM 1

RUN SCREEN

+/-

SYSTEM

SYSTEM 2

RUN SCREEN

RES

ENT SPECIAL SETUP

P-C UNIT MODE SYSTEM

AMBIENT

RUN SCREEN

OTHER FUNCTION KEYS

Figure 9. Run Screen Flow Chart

HEAD

ROTATE

ESCESC

AMBIENT

GEN

PG7000™ OPERATION AND MAINTENANCE MANUAL

3.9 Direct Function Keys

3.9.1 Direct Function Ke ys Summary

Local operator interface with PG7000 is provided by PG Terminal keypad and display. To minimize the use of multi-layered menu structures, the keypad’s numerical keys also provide direct access to the most commonly used functions. The function accessed is labeled on the bottom half of the eac h k e y. Direct f unction keys are active whenever PG7000 is in a run screen (MAIN, S YSTEM or AMBI ENT). T able 14 summ arizes the ope ration of the direct function keys. Section 3.8 provides a flow chart of PG Terminal general operation. See corresponding manual Sections to 3.9.1 to 3.11.9.

It may be usefu l to keep a copy of Tab le 14 near the PG70 00, especially when first becoming acquainted with its operation.

Table 14. Summary of PG7000 Direct Function Key Operations

Note

DIRECT FUNCTION KEYS ARE ACTIVE FROM ANY RUN SCREEN

See corresponding manual sections for full detail.

Menu of less frequently used internal functions and settings including resets, user preferences, internal calibration and remote interface setup.

Edit and select files that determine the sources of the values for the variables PG7000 uses in calculations of reference pressures.

Select pressure to mass or mass to pressure operation.

Activate motorized control manually. Activates when pressed, deactivates when released.

From a run screen: Access mass or pressure setting commands. From other screens: Select menu choice, enter value, confirm selection.

Turn automatic activation of motorized rotation ON/OFF.

(main, ambient, system).

Set the resolution of PG7000 mass loading commands (0.01 g to 0.1 kg).

Access SYSTEM run screens (2) which display current measurements of piston behavior, piston-cylinder temperature and reference vacuum if present. Toggles between the two screens.

Access AMBIENT run screen which displays current values of barometric pressure, ambient temperature, ambient humidity and local gravity as specified in the active SETUP file.

Adjust height of DUT fluid head correction. Set to zero to defeat head correction.

Select active piston-cylinder module (range).

Set unit of measure in which pressures are defined. Choice of units available from this key can be customized.

Turn automated pressure generation/control ON/OFF, adjust control parameters, set upper limit for automated pressure control. Has no effect if an automated pressure generation/control component is not part of the PG7000 system.

Set pressure measurement mode (gauge, absolute, differential).

3. GENERAL OPERATION

Active 10 kPa/kg 247

0.7 to 50 psi

Select 200kPa/kg 382 14 to 1000 psi

3.9.2 [P-C]

 PURPOSE

To view and/or change the active piston-cylinder module. In most cases, changing the piston-cylinder module is equivalent to changing the range.

Note

• [P-C] is for selecting the active piston-cylinder module only. Piston-

cylinder mod ules can b e added and d eleted and th eir charact eristics can be edited by pressing [SPECIAL] and selecting <1PC/MS> (see Section

3.11.1).

• The active mass set and mass loading bell are selected by pressing

[SPECIAL] and selecting <1PC/MS> (see Section 3.11.1).

 PRINCIPLE

To make valid pressure and mass load calculations, PG7000 must know the exact characteristics of the piston-cylinder module that is currently in use. See Section 7.2 for detailed information on PG7000 pressure and mass calculations.

Most PG7000s are used with m ore than one p iston-c ylinder m odule. Detai led characteristics on up to 18 piston-cylinder m odules are stored in fi les. These files can be added, deleted, viewed and edited by pressing [SPECIAL], 1pc/ms (see Section 3.11.1).

The P-C function pro vides rapid access, f rom any run screen, to view ing the piston-cylinder modules available and selecting one to be active.

 OPERATION

Pressing [P-C] activates the pisto n-cylin der module viewing and s electing f unction. Pr essing the [P-C] key again or [+/-] while in the P-C function steps through displays of available piston-cylinder modules.

When [P-C] is first pressed, a summary of the characteristics of the active piston-cylinder module is displayed, for example:

1. Nominal pressure to m ass conversion coefficie nt of the pistoncylinder module t hat is currently s elected (acti ve). This value is calculated f rom the effective area of the piston-cylinder and is in kPa (if < 1 MPa) or MPa. Upgraded Type 5000 pistoncylinders may be displayed in psi.

2. Serial number of the active piston-cylinder module.

3. Current pressure unit of measure.

4. Nominal pressure in current pressure units resulting from loading all the mass of the active mass set.

5. Nominal pressure in current pressure units resulting from loading the piston and mass bell only.

Pressing [P-C] again or [+/-] causes the screen to step through the other available piston-cylinder modules in the sequence that they were added.

1. Nominal pressure to m ass conversion coefficie nt of the pistoncylinder module. This value is c alculated f rom the eff ective ar ea of the piston-cylinder and is always in kPa (if < MPa) or MPa.

2. Serial number of the piston-cylinder module.

3. Current pressure unit of measure.

4. Nominal maximum pressure using the piston-cylinder module. Pressure, in current pressure units, resulting from loading all the mass of the active mass set.

5. Nominal minimum pressure using the piston-cylinder module. Pressure, in current pressure units, resulting from loading the piston and mass bell only.

Pressing [ENTER] while in the P-C func tion caus es PG7000 t o select t he currentl y displa yed piston-cylinder module as the active piston-cylinder module.

PG7000™ OPERATION AND MAINTENANCE MANUAL

function key from any run screen. The

1kPa 2Mpa 3Pa 4bar 5psi 6kcm2

Select inWa ref temp 4°C 20°C 20°F

Pressing [ESCAPE] while in the P-C function returns to the main run screen without changing piston-cylinder modules.

• The pressure unit of measure in which the range offered by the piston-

cylinder mo dule using the active mass set i s d i splayed can b e changed by pressing [UNIT] (see Section 3.9.3).

• When the current pressure unit of measure is an altitude unit, piston-

cylinder mo dule range i s e xp re s sed in kPa if t h e a ltitude un it is meters (m) or psi if the altitude unit is feet (ft).

3.9.3 [UNIT]

 PURPOSE

To specify the unit of measure in which defined pressures are expressed.

 PRINCIPLE

PG7000 supports a wide variety of pressure units of measure. Internally, PG7000 always operates in Pascal [Pa] (the SI uni t of pr essur e). Values of pressure ar e represent ed in other units by the application of c onversion factors to convert from Pasc al. See Section 7.1.1 for Unit of Measure Conversions .

The pressure unit of measure selection (e.g., psi, kPa, etc.) is separate from the pressure measurement mode selection (gauge, absolute or differential). See Section 3.9.4 for information on changing the measurement mode.

 OPERATION

Note

To change the pressure unit of measure, press the [UNIT] display is (default units depend on model):

The cursor is on the n um ber corr es p o nd i ng t o t h e active uni t. T o change t he pr es sure unit , s el ect the desired unit. The display returns to the previou s run scre en with the sel ected uni t active .

If the pressure unit selected is inWa, the reference temperatur e f or wa ter densit y m us t be s pecified. When inWa is selected as the unit , the next di splay is:

Select the desired r eferenc e temper ature for water de nsity usi ng the [←] or [→] key to move the cursor. Pressing [ENTER] returns to the main run screen with inWa based on water density at the selecte d reference tem perature as the activ e pressure unit. T he current inW a reference temperature can be viewed by observing the position of the cursor in the reference temperature screen.

Note

• See Section 7.1 for tables of the pressure unit of measure conversion

factors used by PG7000.

• The UNIT function provides rapid access to a choice of up to six units.

The choice of units can be customized from a wider s elect ion by th e user (see Section 3.9.3.1). The default units of the UNIT function dep end on th e PG7000 model. The default units are:

• PG7102 and PG7601: 1kPa 2MPa 3Pa 4bar 5psi 6kcm2

• PG7202 and PG7302: 1MPa 2k Pa 3bar 4 psi 5 kcm2

• To restore the default UNIT function settings, use the Unit Reset (see

Section 3.11.9.2).

3. GENERAL OPERATION

Set up user unit #6

Unit #6 1SI 2other 3altitude 4user

• Certain internal and/or metrological functions (e.g., vacuum reference

pressure) ar e always represented in P ascal [Pa], regardle ss of the active pressure unit of measure.

• When the current pressure unit of measure is an altitude unit, atmospheric

pressure in the AMBIENT run screen is expressed in kPa if the altitude unit is meters (m) or psi if the altitude unit is feet (ft).

3.9.3.1 Customizing Pressure Units Available Under the UNIT Function

 PURPOSE

To customize the selection of pressure units that are ava ilable for selection fr om the [UNIT] function key.

 PRINCIPLE

The UNIT function provides a choice of different pressure units of measure depending on the PG7000 model. The units that are available by default are those indicated in th e Note in Section 3.9.3. Howe ver, PG7000 supports m any other pressure units of measure. Ot her units can be m ade a vai la ble for selection and units can be deleted b y custom izing the UNIT function. T his allows PG 7000 to offer a very wide selection of units while simplifying day to day operation. The typical user w ill customize the [UNIT] function key to support the s ix most commonly used units.

 OPERATION

To customize the [UNIT] f unction key, from the m ain run screen press [SETUP] and select <2PresU>. The display is:

1. The UNIT number in the [UNIT] menu that is to be changed.

Enter the number of the unit position that you would like to change. The display becomes:

Select the desired pressure unit category. SI units include units based on SI such as mmHg. Select the desired unit from the unit list (see Table 15).

Table 15. Pressure Units of Measure Available

<1SI> <2Other> <3altitude>* <4User>**

<1Pa> <2Kpa> <3MPa> <4mbar> <5bar> <6mmHg> <7mmWa>

* <3altitude>: PG7601 in absolute by vacuum mode only. Not available in PG7102, PG7202 and PG7302.

** <4user>: User defined unit. As there are no altitude units on PG7102, PG7202 and PG7302, user is <3user>.

<1psi> <2psf> <3inHg> <4inWa> <5kcm2> <6Torr> <7mTor> <8none>

<1m> <2ft>

<1user>

PG7000™ OPERATION AND MAINTENANCE MANUAL

Define user unit:

1.000000 Units/Pa

The UNIT function display is not required to display six units. To delete the current unit from the U NIT screen and show no un it, select <2other>, <6none> for that unit number.

If <4user> was selected, the user unit must be defined. The display is:

1. Entry field.

Enter the num ber of user units per Pas ca l [Pa] in the e ntry fi eld. Pr essi ng [ENTER] defines the user unit and returns to the <Set up unit #> screen.

• See Section 7.1.1 for the pressure unit of measure

conversion factors used by PG7000.

• The user defined unit can be assigned a user defined label

using the UDU remote command (see Section 4.3.4.2).

3.9.4 [MODE]

Note

 PURPOSE

To specify the meas urement mode (gauge, absolute, diff erential) in which PG7000 defines reference pressures.

Note

Pressure measurement mode and unit of measure a re not the same thing. See Section 3.9.3 for i nf orm ati on on t he pr es sur e un it of me asu re .

 PRINCIPLE

Pressure defined relative to absolute zero or vacuum is generally referred to as absolute pressure.

Pressure defined relat ive to atm ospheric press ure is g enerall y ref erred to as gau ge press ure, with pressure below atmosphere called negative gauge pressure.

Pressure defined relati ve to another pressur e that m a y be, but is not n ecess aril y atm ospheric pressure, is generally referred to as differ e nti al pres sur e.

PG7000s (depending on the model) can define absolute, gauge, negative gauge and differential pressures. These are referred to as measurement modes.

The specific PG7000 measurement modes are as follows:

• gauge: Defines gauge pre ssure by leaving the PG7000 mass load open to atm osphere. This measurement m ode is supported b y all PG7000 m odels. It does not allo w negative gauge pressures. The minim um gauge pressure is the pressure resulting f rom loading the combined mass of the piston and the bell on piston-cylinder effective area.

• absolute by adding atmospheric pressure (absolute by ATM): Defines absolute pressure by defining a pre ssure in the same manner as in gaug e mode and adding the value of atmospher ic pressure measured by a barometer. T his measurement mode is supported by all PG 700 0 m ode ls . T he b ar ometer can be PG700 0’s on-board sens or or a remote RS232 barometer. The uncertainty on the value of atmospheric pressure measured by the barometer must be considered but this value can become relatively small as pressure goes u p . Fo r example, if using a ± 0 .0 1 % b arometer , t h e a dded uncer t a in ty at 1 MPa (150 psi) is 10 ppm.

3. GENERAL OPERATION

Measurement mode: 1gauge 2abs 3HLdif

Measurement mode: 1g 2avac 3aatm 4dif

This mode is more convenient an d less c ostly than ab solute by v acuum si nce no vacuum

reference needs to be es tablished. Howev er, it does not allo w absolute pr essures under atmosphere and the minimu m absolute press ure is atmospher ic pressure plus the pressure resulting from loading the c ombined mass of the piston and the b ell on the piston-cylinder effective area.

• absolute by vacuum (absolute by vac) (PG7601 on ly): Defines absolute pr essure by measuring relative to an evac uated bel l jar. T his mode is tim e consum ing as the vacuum under the bell jar mus t be made and brok en to adjust the m ass load for each pres sure to be set. This mode is required for settin g absolu te pres sur es under a tm ospheric press ure and for lowest uncertainty under about 1 MPa (150 psi).

• differential (dif) (PG7601 only): Defines differential pressures at an absolute static pressure between vacuum and two atmospheres by defining an absolute pressure relative to an evacuated bell jar and subtracting static pressure monitored by a digital pressure indicator. An offsetting technique ensures that only the digital indicator’s resolution and very short term repeatability influence the measurement results. Allows positive and negative differential pressure (i ncluding gauge pressures) with one common hardware setup. Cov ers pr ess ur es very near and at zero without lim itati ons due to piston-cylinder size and mass loads (see Section 3.9.4.1).

• high line differential (HLdif) (PG7102 and PG7202 only): Defines differential pressures and at g aug e s ta tic pres s ure bet w ee n t he lo wes t g aug e pr ess ur e s upp orted by the piston-cylinder and t he maximum gauge pressure supported b y the piston-cylinder. Requires the use of a PG7202 or PG7102 as the “refer ence” and a secon d gas oper ated PG7000 as the “tare”. Differential pressures are defined by setting a common line pressure on both PG7000s and then adding the differential pressure to the reference PG7000 (see Section 3.9.4.2) .

 OPERATION

To change th e press ure m easur em ent m ode, pr ess [MODE] from an y run scr een. The res ulti ng display depends on the PG7000 Mode l:

The cursor is on the number corresponding to the current measurement mode.

PG7102, PG7202, PG7302 [MODE] Screen PG7601 [MODE] Screen

For PG7102, PG7202 and PG7302, selecting <2abs> accesses absolute by ATM mode (see PRINCIPLE above).

For PG7102, PG7202 and PG7302 selec ting <3HLdif> accesses high line differential mode (see PRINCIPLE above and Section 3.9.4.2).

For PG7601, selecting <2avac> accesses absolute by vacuum mode. Selecting <3aatm> accesses absolute by ATM mode. Selecting <4dif> accesses differential mode (see PRINCIPLE above and Section 3.9.4.1).

Making a measurement mode select ion returns to the previous run scr een with the selected mode active.

Note

When using an AMH automated mass handler, be sure to apply drive vacuum to the AMH when switching operation to absolute by vacuum mode (see the AMH-38/AMH-100 Operation and Maintenance Manual).

3.9.4.1 Differential Measurement Mode (PG7601 Only)

 PURPOSE

To define gauge press ures near and under atm ospheric press ure that cannot be covered in conventional gauge mode; to define pressures at a static pressure near atmospheric pressure but other than atmospheric pressure.

PG7000™ OPERATION AND MAINTENANCE MANUAL

(nominally equal to RPM

)

to RPM test port

Differential pressure defined by PG7601

Absolute pressure defined by PG7601

RPM

Current RPM indication of static pressure

the operating static pressure

Differential mode operation is only supported by PG7601. Differential mode operation requires that the PG7601 SETUP AtmP selection be for an external barometer connected to COM2 (see Section 3.1 0, 3.11.5.4). Differential mode op eration also requires the PG7000 Differential Mode Interconnections Kit P/N 3070127, which includes the Differential Mode Controller.

 PRINCIPLE

Differential mode is des igned to allow PG7601 to define pressures wh ich piston gauges have typicall y not covered or for which they have be en difficult to use. This includes positive and negative gauge pressures right around zero, for example ± 2.5 kPa (10 in. H2O); as well as low differential pressures at low absolute static pressur es, for exam ple 0 to 2.5 kPa (20 T orr) at 15 kPa absolute (2.2 psia) static pressure.

The principal of differential mode is to define a differential pressure as the difference between an absolute pressure relative to vacuum and a second absolute pressure (the static pressure) measured by a precision Reference Pressure Monitor (RPM). An offsetting procedure “tares” the RPM so that the uncertainty contribute d to the differentia l pressure b y the RPM’s measurem ent is a function of the RPM resolution and short term repeatability rather than its absolute accuracy and long term stability.

For differential mode opera tion, the static press ure is set to the desired valu e as measured by the RPM (atmospheric pressure for gauge pressure measurements). Then RPM offset at the static pressure is determined by applying the static pressure as defined by the PG7601 following:

Note

offset = PGRPMstart - RPMindicate

RPM

Where:

PGRPMstart

RPMindicate

Pressure applied by PG7601 to RPM

start

RPM reading when PGRPMstart is applied

Once the RPM offset has been det ermined, differentia l pressures are def ined by subtracting the static pressure m easured b y the RPM f rom an absolute pr essure defined by the PG7601 following:

dif = PGabs - RPMcurrent - RPMoffset

Where:

dif abs

current

RPMoffset

Disagreement between PG7601 and RPM at

For differential mode o peration, the PG7000 Differential Mode In terconnections Kit should be used to pro vi de th e DU T high an d lo w te s t c onnec tions an d s upp or t the RPM offsetting procedure (see Figure 9 and Section 3.9.4.1). A precision Reference Pressure Monit or, s uch as a Dhi RPM, m ust be s electe d f or the Atm P source in SETUP (see Section 3.10, 3.11.5.4).

PG7601 differential measurement mode manages the data acquisition and handling to support differential mode operation without operator effort. Differential mode operation requires setting the static pressure at which differential meas urements are to be m ade and regu lar determ ination of the R PM offset. These functions are supported under [MODE], <4dif>.

3. GENERAL OPERATION

1. P G /STATIC P CONTROL Port

2. PG Port

3. TEST HIGH Port (Quick Connection)

4. TEST LOW Port (Quick Connection)

5. 1/8 in. NPT F or 4T Quick Connector

6. STATIC P Port

7. STATIC P SUPPLY Port

8. CONTROL SELECTION Valve

9. PG SHUTOFF Valve

10. TEST BYPASS Valve

11. Reference Pressure Monitor (RPM) (Optional)

12. STATIC P SELECTION Valve

13. Static Pressure Exhaust (Internal)

Figure 10. Differential Mode Controller Schematic

Note

Technical Note 9940TN02 provides more detailed information on differential mode principles and includes a complete uncertainty analysis. Consult Fluke Calibration or visit

www.dhinstruments.com.

 OPERATION

To select differential mode operation and access differential mode functions press [MODE] and select <4dif>.

Differential mode operation includes:

• Select ing differential mode, setti ng static pressure and find ing the RPM offset (see Section 3.9.4.1, Pressure, Finding RPM Offset (<1run>)

• Operating in differential mode (see Section 3.9.4.1, . Operating In Differential Mode

• Viewing differential mode static pressure and RPM offset (see Section 3.9.4.1,

Viewing Static Pressure and RPM Offset (<2view>)

• Selecting Differential Mode, Setting Static Pressure, Finding RPM Offset (<1run>)

Selecting Differential Mode, Setting Static

PG7000™ OPERATION AND MAINTENANCE MANUAL

Offset: 9.03 Pa New offset? 1no 2yes

Set RPM P & [ENT]

96.57785 kPa a

To operate in differential mode and/or execute the RPM offset determination procedure, the AtmP selection under SETUP must be external (COM2) (see Section 3.10). If thi s is not the case, an error messa ge will be dis played (<Dif mode require s COM2 AtmP SETUP>) when attempting to activate differential mode.

To select diff erential mode oper ation and/or execut e the RPM offset determ ination procedure, press [MODE] and select <4dif>, <1run>. The display is:

1. Current value of RPM offset. Always in Pascal [Pa].

Select <1no> to us e the existing RPM off set and return the previous run s creen in differential mode (see Section 3.9.4.1,

The RPM offset should be redetermined any time the static pressure value is change d, as well as at the beginning of each calibration or test sequence. If the difference in the value of the RPM offset in subsequent determinations is < 0.1 Pa, then less frequent offset determinations may be considered.

Select <2yes> to proceed with a new determination of the RPM offset (see Section 3.9.4.1, PRINCIPAL. The display is:

Note

Operating in Differential Mode

Note

1. Current pressure reading of the RPM in the current units of.

Table 16. Valve Settings for Setting Differential Mode Static Pressure

VALVE VALVE SETTING

Control Selection Static P PG Shutoff Closed Test Bypass Open Static P Selection Off

If static pressure is atmospheric pressure VENT or OFF

With the Differential Mode Controller valves (see Figure 9) set as indicated in Table 16 use the system’s pressure control component to set the desired s tatic pressure value as read by the RPM.

If the desired static pr es sure is atmospheric pressure (for ex am ple, f or low ga uge and negative gauge diff erential pressur es), set the STAT IC P SELECTION valve to VENT.

If a REFERENCE VOLUM E is connected to the STAT IC P port and the desired static pressure is less than atm ospheric pressure, c onsider settin g the STATIC P SELECTION VAL VE to SUPPLY. This will connect the pressure s ettin g vacuum source directly to the reference vol ume and reduce pull dow n time.

3. GENERAL OPERATION

Load mass & vac:

9.2 kg & 32.47 g

<<* 99.9785 kPa a h

-3.5 Off: -7.89 Pa

 Caution

Be sure the TEST BYPASS valve is in the OPEN position before adjusting the static pressure. Failure to do so will cause differential pressure to be generated across the HIGH and LOW TEST ports which may overpressure the DUT.

When the static pressure, as indicated by the RPM, has been set to the desir ed value, press [ENTER]. PG7000 reads the RPM and calculat es th e mass to load on PG7000 to set the pressure value indicated by the RPM. The display is:

Note

When using an AMH autom ated mass handler, the mass value to set the value indicated by the RPM is always loaded with resolution of 0.1 kg. This is to avoid having to break the reference vacuum to load trim masses. The differential pressure values are loaded with the resolution specified in [RES] (see Section 3.9.10).

This is the st andar d nom ina l mass load ing in i nstruc tio n displ ay of pr ess ure to m ass mode (see Section 3.9.11.1). The mass loading instruction is always given with 0.01 g resoluti on regardless of t he current mass lo ading resolution s etting (see Sect ion

3.9.10). Lo ad t he m ass val ue f oll owi ng PG70 00 m as s lo adin g pr otoc o l (se e Sec tion

3.6). If an AMH-38 automated mass handler is being used, the mass is loaded automatically and de fault mas s loading reasolu tion of 0. 1 kg is used.

Set the PG7000 Diff erenti al Mod e Contr oller (see F igur e 9) to a pp ly the pr essur e defined by the PG7000 to the RPM (see Table 17).

Table 17. Valve Settings to Apply PG7000 Pressure

to the RPM for Differential Mode Offsetting

VALVE VALVE SETTING

Control Selection PG PG Shutoff Open Test Bypass Open Static P Selection Off

If static pressure is atmospheric pressure VENT or OFF

Once the valves have been properl y set and the mass has been loaded, install the bell jar and establish vacuum under the bell jar. Then press [ENTER]. The display is:

1. Current pressure reading of the RPM in the current units of measure.

2. Standard main run screen piston position indication (see Section 3.7).

Current RPM offset (pressure applied by PG7000 - RPM indication). Indicates ******* if the value is > 9999.99 Pa. Pressure unit of measure is always Pascal [Pa].

PG7000™ OPERATION AND MAINTENANCE MANUAL

Old offset: -7.72 Pa New offset: -7.89 Pa

Float and rotate the PG7000 piston. When the PG7000 is ready (see Section 3.4), press [ENTER]. Wait about 6 seconds while the PG7000 takes and averages multiple readings. The display is:

1. RPM offset currently in use.

2. New RPM offset just measured.

To record the new RPM off set and go to the previous run screen in differential mode with the new RPM offset active, press [ENTER].

To return to the <New offset?> screen, pres s [ESCAPE]. See Section 3.9.4.1,

Operating in Differential Mode

mode operation.

• The value of the RPM offset typically should be inside of ±

20 Pa. An RPM offset value outside of this range may indicate a poorly calibrated RPM or a problem with the offset determination procedure.

• The difference between the RPM offset at the beginning

and at the end of a test will be reflected as zero drift of the differential pressures defined during the test. To quantify this value, perform the RPM offset procedure at the beginning and at the end of a test and evaluate the difference between the starting and ending RPM offset values.

Operating in Differential Mode

, for information on diff erential

Note

 Caution

Differential mode is often used to calibrate DUTs with very low differential pressure ranges. These can easily be over pressured and damaged by inadvertently applying excessive pressure to one port. OPEN the MPC1-D BYPASS valve to zero the differential across the DUT when there is a risk of overpressure.

From a practical standp oint, operating in differential mode is near ly identical to operating i n absolute by v acuum mode (see Section 3.9.1 1). Unless and AM H-38 automated mass handler is used, vacuum under the bell jar must be broken to make mass load changes and ree stabli shed to set a pressure .

Operation is in either pressure to mass or mass to pressure mode (see Section 3.9.12).

To operate in differential mode, set the PG7000 Differential Mode Controller (see Figure 9) to apply pres sure defined by PG7000 to the hi gh side of the DUT (see Table 18).

3. GENERAL OPERATION

Table 18. Valve Settings for Operating in Differential Mode

VALVE VALVE SETTING

Control Selection To adjust pressure under PG7000 piston: PG

To adjust static pressure: STATIC P

PG Shutoff Piston is floating or near floating: OPEN

Any other time: CLOSED

Test Bypass To make differential pressure measurements: CLOSED

To set or check DUT zero: OPEN

Static P Selection OFF

If static pressure is atmospheric pressure: VENT or OFF

Note

For the highest quality differential mode measurements, use consistent conditions for static pressure and PG7000 vacuum reference pressure at each point. Set the PG7000 Differential Mode Interconnections Kit CONTROL valve to STATIC P to readjust the static press ure to the same value at each point if necessary. This valu e sh ou ld b e th e same as t he v alu e at which the RPM offset was determined.

Typical Differential Mode Operation al Sequence

See Figure 9 for a schematic of the Differential Mode Controller and its valves.  Set RPM offset at desired static pressure (see Section 3.9.4.1, Selecting

Differential Mode, Setting Static Pressure, Finding RPM Offset (<1run>)).

 Select pressure to mass or mass to pressure mode (see Section 3.9.12).  Put the Diffe re nti al M ode C ont roll e r P G SH U TOFF v alv e in CL OSED po siti on.  If desired, read DUT output at zero differential pressure with

TEST BYPASS valve open. Put TEST BYPASS valve in CLOSED position. If desired, put CONTROL valve in STATIC P position and use system control component to adjust static pressure to starting value.

 Press [ENTER] and enter a pressur e or mass value . Load mass as instructed

on PG7000.

 Install bell j ar on PG7000, shu t the PG7000 vac uum vent valve , open vacuum

reference shutoff valve. Wait for vacuum under bell jar to reach Ready condition. If using AMH-38 automated mass handler and mass loading resolution of 0.1kg, mass can be changed without breaking vacuum.

 Put CONTROL va lve in PG posi tion and use s ystem contr ol compo nent to float

PG7000 piston. Slowly put PG SHUTOFF valve into OPEN position. Readjust pressure to float the PG7000 piston if necessary.

If desired, p ut CONTROL valve in STATIC P posi tion and use system control

component to adjust static pressure to starting value.

When PG7000 indicates Ready on all Ready/Not Ready indicat ors, take DUT

reading at di ffe rent ial p re ssure in di cated on t he to p li ne o f th e P G7000 di s play . Slowly put P G SHU TOF F v alve in C L OSED po si ti on. Shut vacuum reference shutoff valve, open vacuum vent valve. Wait for

pressure un der bell jar to r eturn to ambie nt. Remove be ll jar. This ste p is not

necessary is using AMH-38 automated mass handler and mass loading

resolution of 0.1 kg. Repeat Steps  through for each desired differential pressure point.

PG7000™ OPERATION AND MAINTENANCE MANUAL

Offset: -6.33 Pa @99.8755 kPa a

Setting Zero Differential Pressure

See Figure 9 for a schematic of the Differential Mode Controller and its valves. Zero differential pressure can be set by PG7000 or simply by setting the

Differential Mode Controller TEST BYPASS valve to the OPEN position which connects the HIGH and LOW TEST ports together. The TEST BYPASS valve OPEN position is a “true” zero. The zero differential pressure value set by PG7000 has the same uncer tainty as any other differential pressure point (see Section 1.2.4.1). Com paring the DUT reading at zero set b y TEST BYPASS in the OPEN position and at zero set by PG7000 in differenti al mode like any other differential pressure, can help quantify the quality of the current RPM offset value. If the difference between the two zero readings is excessive, the RPM offset value should be redetermined (see Section 3.9.4.1, Differential Mode, Setting Static Pressure, Finding RPM Offset (<1run>)). Also, consider correcting all the DUT readings by the difference in the zero reading found in the two different conditions to correct for the defect in the RPM offset.

Viewing Static Pressure and RPM Offset (<2view>)

To view the current RP M offset and the static pr essure value at which the offset was recorded, press [MODE] and select <4dif>, <2view>. This display is:

Selecting

1. RPM offset value that is currently active.

2. PG7000 pressure at which RPM offset was recorded.

Press [ESCAPE] to return to the <Differential mode:> menu. Press [ENTER] to return to the previous run screen.

3.9.4.2 HIGH LINE Differential measurement mode (PG7102, PG7302 and PG7202 ONLY )

 PURPOSE

To define dif ferentia l pressu res at ele vated line pr essures up to 11 MPa ( 1 600 psi) with PG7102 or 110 MPa (16 000 psi) with PG7202 in gas and up to 500 MPa (72 500 psi) in oil.

Note

High line differential (HL dif) mode operation is only supported by PG7102, PG7202 and PG7302. HL dif mode operation requires the use of a two ident ical PG7102, PG720 2 or PG7302s in tandem. Both PG7000s must have nominally identical pistoncylinders and one of the PG7000s must have a “tare” pistoncylinder. The HL dif mode setup for pressure up to 110 MPa (1 600 psi) in gas normally also includes an MPC1-D-1000 or MPC1-D-3000 manual pressure controller and the PK-7100MPCD-DIF Interconnections Kit P/N 3070226. The HL dif mode setup for pressure greater than 110 MPa uses GPC1 (gas), OPG1 or MPG1 (oil) and custom interconnecting hardware.

3. GENERAL OPERATION

 PRINCIPLE

Note

Technical Note 0080TN03 p rov id es more d etailed i nformation on high line differential mode principles including a complete uncertainty analysis. Consult Fluke Calibration or visit our website,

High line dif ferential mode is designed t o allow two PG7102, PG7202 or PG7302 piston gauges to be used together to define differential pressures relative to line pressures significantly above atmospheric pressure. This capability is most often used to test or c a l i br at e differential pressure devices designed to operate at elevated line pressures under their normal operating line pressure conditions.

The main challenge of def ining differential pressures at elevated line pressures comes from the very high r atio of li ne pressure to differ ential pr ess ur e. Re lat iv el y small errors and instabilities in the line pressure are very large relative to the differential pressure.

The principal of high line differential mode is to “cross float” two PG7000 piston gauges so that they define a common line pressure. After the crossfloat is completed, a BYPASS valve is closed isolating on e PG7000 from the other. T he “tare” PG7000 maintains the line pressure. Mass is added to the “reference” PG7000 to define differential pressures “on top of” the line pressur e. The ver y high precision of the PG7000 gas operated piston gauges allows them to set and maintain a common line pressure with uncertainty much lower than the overall measurement uncertainty on either piston gauge. The two PG7000s are crossfloated at the line pressure prior to making differential measurement to minimize the contribution of line pressure errors to differential pressure. The crossfloating procedure consists of making mass adjustments on the tare PG7000 so that both pisto ns, when connected toget her at the line pressure, fal l at their “natural” drop rate . PG7000’s embedded pist on fall rate measurem ents and calculations capabilities are used to assist the operator in performing the crossfloat.

The PG7000 that is us ed o nly to maintain the l in e pressure on the lo w s id e of t he device under test (DUT ) is designated t he tare PG70 00. The tare PG 7000 is a standard PG7000 but it is normally used with a tare piston-cylinder and a tare mass set (a standard pist on-cylinder and m ass set may also be used) . A tare pistoncylinder effective area is entered as the nominal effective area and its characteristics include k(P), which must be entered in the piston-cylinder definition file (see S ec tio n 3.11. 1.1) . A tare mass s et has th e s ame configuration as a standard m ass set but the exact values of the masses are not measured and the mass set is s et up using nominal values for each m ass measured value (see Section 3.11.1 .6). T he tare piston m ass is adj usted to b e slightl y under t he nominal piston mas s. This assures that the tare side will always be th e light sid e when crossfloated with the reference side. If a tare piston-cylinder and mass set is not used on the tare PG7000, the tare side may not be the light side in a crossfloat. In this case, the tare mass load on the reference side should be increased slightly (ge nerally < 1 g) to ensure that i t is heavier, tak ing care not to confuse the added tare mass with the subsequent differential mass load.

The PG7000 that is used to apply the added pr essure to create the differential pressures on the high side of the DUT is designated the reference PG7000. The reference PG7000 is a standard PG7102, PG7202 or PG7302 with a standard piston-cylinder and mass set. The reference must be a PG7102, PG7202 or PG7302. The tare may be a PG7102, PG7202, PG7302 or a PG7601.

www.dhinstruments.com to obtain a copy.

PG7000™ OPERATION AND MAINTENANCE MANUAL

The tare and reference PG7000s mus t have nom inally identic al piston-cylinders. The two PG7000s operate together with the reference acting as “master” and the tare as “slave”. For communications between the two to occur, C OM2 of the reference m ust be connec ted to COM1 of the tare wit h a valid RS232 c able and proper settings must be made on both interfaces (see Section 3.11.5.1).

For high line differential mode operation up to 11 MPa (1 600 psi) in gas, an MPC1-D and the PK-7100-MPCD-DIF Interconnections Kit P/N 401645 should be used to provide the DUT high and low test connections and support line pressure and differential pressure setting procedures (see Figure 10). For operation at pressure grea ter than 11 MPa, GPC1 for gas, OPG1 or MPG1 for oil, and custom interconnecting hardware are used in a functionally similar setup.

PG7000 high line d ifferential measurement mode m anages the data acquisition and handling necessar y to suppor t dif fer ential mode o perati on. Dif fer ential mode operation requires setting the line pressure including crossfloating the two PG7000 piston gauges and then setting differential pressures at the line pressure. These two independent operations are supported under [MODE], <3HLdif>, <1run>.

• High line differential mode relies upon the very high

sensitivity of PG7000 gas operated piston-cylinders to set and stabilize low differential pressures relative to very high line pressures. To meet the full performance potential of PG7000 high line differential mode operation, external influences on the piston gauges must be minimized. Air currents and vibrations are the most significant possible influences. Do not operate near an active air conditioning or heating duct, avoid opening and closing doors or any movement of personnel around the system. Consider putting the PG7000s in an electrostatic free enclosure if the environment cannot be adequately controlled.

• See Section 7.2.1 for information on the exact calculations

used by PG7000 to obtain the differential pressures defined in high line differential mode.

 Caution

3. GENERAL OPERATION



Tare PG7000 (PG7102, PG7202, PG7302, or PG7601)

 Differential Device Under Test (DUT  Reference PG7000 (PG7102, PG7202

or PG7302)

 MPC1-D or other Hi Variable Volume (Hi VV)  MPC1-D or other VENT Valve  MPC1-D or other HI/LO BYPASS Valve  MPC1-D or other Lo Variable Volume (Lo VV)

 MPC1-D or other INLET Valve

Figure 11. High Line Differential Mode Schematic

Note

Technical Note 0080TN03 p rov id es more detailed information on high line differential mode principles using PG7102 and PG7601 piston gauges and includes a complete uncertainty analysis. Consult Fluke Calibration or visit our website,

www.dhinstruments.com to obtain a copy.

 OPERATION

Note

High line differential mode does not support operation with AMH automated mass handler(s).

To select high line differential mode operation and access differential mode functions press [MODE], <3HLdif> on the reference PG7000.

Note

When operating in high line differential pressure mode, the reference PG7000 is “master” and the tare PG7000is “slave”. All operator interaction is with the PG Terminal of the reference PG7000. The tare’s display is for information only. The tare PG7000 keypad is inactive.

PG7000™ OPERATION AND MAINTENANCE MANUAL

High line differential mode operation includes:

• Entering differential mode (see Section 3.9.4.2, Differential Mode

([MODE], <3HLdif>, <1run>)).

• Setting a line pressure (see Section 3.9.4.2, ([MODE], <3H Ldif>, <1run > , <2yes>)).

• Setting d if f er ential pr es sur e s at a h ig h line pressure (see Sec ti on 3.9 .4.2 , Setting Differential Pressures at a High Line Pressure

• Viewi ng current line pressure and na tural fall rates for the line pres sure (see Section 3.9.4.2, Temperatures and Natural Piston Fall Rates ([MODE], <3HLdif>, <2view>).

Entering High Line Differential Mode ([MODE], <3HLdif>, <1run>) To enter high line differential mode, press [MODE] ,<3HLdif>, <1run> on the

reference PG7000’s PG Terminal.

The reference PG7000 initializes high line differential mode. To successfully enter high line differential m ode the reference PG7 000 must be able to communic ate with the tare PG7000, the piston-cylinders in both PG7000s must be nom inally identical and the piston-cylinder in the tare PG7000 must have a non-zero value for k(P) in its piston-cylinder module file. W hen initializing high line diff erential mode, the reference PG7000 tests for these conditions and provides error messages as follows:

• <Cannot find PG7000 on COM2>: COM2 of the reference PG7000 must be connected to COM1 of the tare PG7000 using a valid RS2 32 ca ble and both interfaces must be properly set so that communications between the two PG7000s can occur (see Sections 3.11.5.1, 3.11.5.4). If the reference is unable to com municate with the tare, t his error message is displayed. If this error m essage is obs erv ed, c orr ec t the communications problem and retry (see Section 3.11.5.1).

• <T & R PCs not a pair, cannot run HLdif>: The piston-cylinder modules in the tw o PG 700 0s must be nominally i den ti c al (ha ve th e s ame nominal mass to pressure conversion coefficient). If the reference PG7000 finds the two pis ton-cylinder modules to be different, this er ror message is displayed. If this error message is observed, correct the situation by changing piston-cylinder selection or adjusting one pistoncylinder’s definition (se e Sections 3.9.2, 3.11. 1.2).

• <No T PC in T PG7000, cannot run HLdif>: The piston-cylinder module selected in th e tare PG 7000 m us t have a non-zero value for k (P) in the active piston-cylinder module file. If the k(P) value is zero, this error message is displayed. If this error message is observed, correct the situation by providing a non-zero value f or k(P) in the piston-cylinder module file of the tare piston-cylinder (see Section 3.11.1.2).

Entering High Line

Setting a Line Pressure

Viewing Line Pressure, Starting Piston-Cylinder

3. GENERAL OPERATION

< 1000.70 psi LP

- 3.7 30.3 kg + trim

Line P: 1000 psi New line P? 1no 2yes

After high line differential mode is initialized, the display of the tare PG7000 is:

1. Standard Ready/Not Ready indicators for the tare PG7000.

2. Last line pressure set in the pressure unit of

measure that was active when the line pressure was set. The unit of measure remains the same, even if the reference PG7000’s unit of measure is changed, until a new line pressure is set.

3. Label indicating that the mass load includes whatever trim masses were loaded on the tare piston in the crossfloating proc ess to reach equilibri um.

4. Tare mass load for the last line pressure set.

5. Current piston position of the tare PG7000.

While in high line differential pressure mode, the tare PG Terminal keypad is inactive.

After high line differen tial mode is initializ ed, the display of the re ference P G7000 is:

1. Current (last set) value of line pressure in

current pressure unit of measure.

Select <1no> to use the ex isting li ne press ure sett ings and return t o the pr evious run screen in high line differential measurement mode (see Section 3.9.4.2,

Setting Differential Pressures at a High Line Pressure

Select <2yes> to set a new line pressure value or repeat the line pressure setting procedure at the current lin e pressure va lue (see Sec tion 3.9.4.2,

Pressure ([MODE], <3HLdif>, <1run>, <2yes>)

Setting a Line

Note

The line pressure setting procedure must be executed each time the line pressure is changed and should be executed at the beginning of each differential pressure calibration sequence even if the line pressure is the same as the line pressure previously used. Select <2yes> to go to the line setting procedure.

Setting a Line Pressure ([MODE], <3HLdif>, <1run>, <2yes>)

 Caution

To meet the full performance potential of PG7000 high line differential mode operation, external influences on the piston gauges must be reduced or eliminated. Air currents and vibrations are the most significant possible influences. Do not operate near an active air conditioning or heating duct, avoid opening and closing doors or any movement of personnel around the system.

 Caution

Leaks at any point in the test system are highly detrimental to measurement results in high line differential mode. Thoroughly leak check the system before operation and correct any leaks detected.

PG7000™ OPERATION AND MAINTENANCE MANUAL

Target line P: 1000 psi

Load nominal mass on T & R: 33.3 kg

Open bypass, float T Close bypass,[ENTER]

Setting a line pressure has two steps:  Setting the line pressur e an d de ter mining the natural f all rates of the tare an d

reference pistons.

 Performing a crossfloat of the pistons to reach equilibrium and minimize

differential pressure zero of f set .

To set a line pressure press [MODE], <3HLdif>, <1run>, <2yes> on the reference PG7000’s PG Terminal. The display is:

1. Edit field for entry of desired line pressure

value in current pressure unit of measure. Defaults to last value used.

Values of line pressure are always entered and displayed in gauge mode (i.e., relative to atmospheric pressure). Line pressure mass loading i nstructions are always giv en with 0.1 kg resolution. The minimum line pressure is the pressure resulting when the mass of the piston + mass bell is loaded.

Enter the desired line pressure value. The next display indicates the mass to load to set the line pressure.

Note

This display corresponds to the standard mass loading instruction display of pressure to mass m ode (see Section 3.9.11.1). The mass loading instruction is always given with 0.1 kg resolution regardless of the current mass loading resolution setting (see Section 3.9.10). L oad the in dicated mass on both t he tare and reference PG7000s following PG7000 mass loading protocol using main and fractional mass es only (do not use trim masses) (see Section 3.6). Press

[ENTER] when ready.

Note

Line pressure mass instructions are always given with 0.1 kg resolution. This is to preserve the smaller m asses for setting the differential pressu re. The diff erential pressure m ass loading instructions follow conventional PG7000 mass loading protocol using the masses that remain after the line pressure has been set. It may be necessary to select the line pressure value to assure that adequate masses remain to set the desired differential pressure. For example, if the line pres sure requires loading 33.3 kg, a 0.2 and 0.1 kg mass w ill be used to set the line pressure and will not be available if needed to set the desired differential pressure. If this situation occurs, consider changing the line pressure so that it is set using a whole number of kilograms, in this example 33 or 34 kg.

The display is:

3. GENERAL OPERATION

+1.2 mm –3.6 Set T & R to + 1.0&[ENT]

T+1.0 mm R+1.0 Findingrates 29

T-0.9 mm/min R-1.1 ∆-0.2 Save 1yes 2no

rate difference” measurement. Select difference” value and continue to the

Open bypass and [ENTER] to xfloat

With the system’s B YPASS valve OPEN ( see Figure 10), use the INLET and/or VENT valve and the h igh side v ariable volume to adjust the pressure to float the piston of the tare PG7 000. This should cause the reference PG7000 piston to be at its bottom stop. Once the tare piston is floating, close the system’s BYPASS valve and press [ENTER]. The next display is:

1. Tare piston position.

2. Reference piston position.

Use the high and/or lo w s id e v aria ble v olume to set both p istons t o a pos i tio n j ust above + 1.0 mm. Ensure that both pistons are rotating. As both pistons fall through the + 1.0 position, press [ENTER]. PG7000 pauses for 5 seconds a nd then measures the natural fall rates of both pistons for 30 seconds.

1. Indication of tare piston position.

2. Indication of reference piston position.

3. 30 second count down.

Wait for the 30 second t imer to count down while the measurements are m ade. Be sure not to interfere with the free movement of the piston-cylinders during the countdown. After the countdown completes, the results ar e disp layed:

1. Average fall rate of the taring piston.

2. Average fall rate of the reference piston.

3. Difference between the reference and taring piston fall rates (R - T). This is the “natural fall rate difference”.

Note

The “natural fall rate difference” is the difference between the fall rates of the two pistons when they are floating naturally at the line pressure. W hen performing the crossfloat between the pistons in the next step of line pressure setting, the objective will be to adjust the mass of the tare piston until the “crossfloat fall rate difference” measured with th e system’s BYPASS valv e open is equal to the “natural fall rate difference” measured with the BYPASS closed.

Select <2no> to repeat the “natural fall <2yes> to accept the “natural fall rate

second step of line press ure s etting whic h is crossfloating the two piston-cylinders. The display is:

PG7000™ OPERATION AND MAINTENANCE MANUAL

T-1.2 mm R+0.5 ∆+1.2 B/P open,[ENT]

T +0.1 mm R +0.0 ∆-12.2 Xfloating 30

Open the BYPASS val ve a nd pres s [ENTER] to pr oc e ed with t he c ros s f loat. T he display is:

1. Tare piston position.

2. Reference piston position.

3. Difference between the “natural fall rate difference” and the “crossfloat fall rate difference” in mm/min. This is the “equilibrium fall rate”.

The “equilibrium fall rate” is the difference between the “natural fall rate difference” and the “crossfloat fall rate difference”:

Equilibrium fall rate = (R When the “equilibrium fall rate” is zero, the two piston-cylinders

are at equilibrium at the line pressure.

Crossfloat the two pistons to find equi librium by mak ing mass adjustm ents on the tare piston. Find ing equ ilibr ium is an iterat ive proces s wh ich is assis ted b y PG700 0. Pressing [ENTER] starts an automated fall rate measurement sequence that measures the fall rates m ore precisely than the rea l time indication. Follo wing a 30 second countdown or when on e of the pistons has moved more than 1 mm , PG7000 displays the measured “equilibrium fall rate” and suggests the mass adjustment needed on th e tare piston to ac hi ev e a n “e qui li brium fall rate” of zer o. This process can be repeated as many times as desired.

nat

Note

- T

nat

) - (R

xfloat

-T

xfloat

)

Note

If a standard piston-cylinder and mass set (rather than a tare piston-cylinder and m ass set) is being used in the tare PG7000, the tare piston may be the heavy one at the start of the crossfloat (see Section 3.9.4.2 , PRINCIPLE). In t his case, rath er than reduce mass on the tare PG7000, add a small amount of mass to the referenc e PG7000 before starting th e crossfloat so that the tare piston will be the lighter one (generally < 1 g is needed). This will simplify the crossfloating procedure and subsequent differential mass loading. Be sure not to confuse the additional tare mass on the reference piston with the subsequent differential mass loads.

Using trim masses ( 50 g an d be lo w) fr om the trim mass set, adj us t the mass load on the tare PG7000 to establish equilibrium (“equilibrium fall rate” near zero). When the mass adjustments are complete, close the BYPASS valve and put both pistons at a position jus t above 0.0 mm. Ensure that both pisto ns are rotating. As the pistons fall through the 0.0 mm point, OPEN the BYPASS valve, then press [ENTER]. After a 5 second d elay for stabi lization, PG7000 begins the fall rate measurement. The display is:

1. Indication of tare piston position.

2. Indic ation of ref erenc e piston position.

3. 30 second count down.

4. Average “equilibri um fall rat e” since start of the countdown.

3. GENERAL OPERATION

∆-10.3 +0.050 g on T Repeat 1yes 2no

PG7000 is measuring the drop rate of the two pistons and calculating the “equilibrium fall rate”. Be sure to not interfere with the free movement of the piston-cylinders or to introduce any outside interference while the countdown occurs. The fall rate measurement c onti nues unt il either piston has moved 1 mm or 30 seconds have elapsed. The measurement can also be concluded by pressing [ENTER]. When the fall rate m easurement has concluded, the resu lts are displayed:

1. Average “equilibrium fall rate” measured i n last crossfloat.

2. Suggested mass change (in grams) on the tare (T) piston to achieve equilibrium based on equilibrium fall rate just measured.

Evaluate the qu alit y of the equili brium. Check t he va lue of the “e quil ibrium fal l rate” . Consider t hat the cl oser the ra te is to zer o, the b etter the eq uilibrium ; consider that the suggested mass change on the tare piston times the mass to pressure conversion c oeffic ient of th e pisto n approx imates t he press ure val ue of the d efect in the equilibr ium. Check the difference between the DUT output with the BYPASS open and BYPASS clo sed t o ev al uat e the z ero e r ror due to t he equ ili b riu m.

Select <1yes> to return to the crossfloat <B/P open, [ENTER]> screen. If you are satisfied with the quality of the equilibrium , select <2no> to go to the

run screen in high l ine dif f er entia l pres s ure mode and set differ entia l pres s ures a t this line pressure (see Sec tion 3.9.4. 2,

Line Pressure

Setting Differential Pressures at a High

Note

• T he value of the av erage “equi librium fal l rate” measu red by

the crossfloat should typically be inside of

± 5 mm/min and/or the suggested mass adjustment should be inside of 50 mg.

• The device under test (DUT) can often be used to evaluate

the quality of the equilibrium between the two pistons and to correct for the zero error caused by the defect in equilibrium. Observe the change in the DUT output when the system BYPASS valve is opened and closed with the pistons floating. With the system BYPASS valve open, by definition, the differential pressure applied to the DUT is zero. The change in the DUT output observed when the BYPASS valve is closed with the pistons floating is the zero error due to the defect in the crossfloat equilibrium. Consider correcting all of the DUT readings by the value of this offset to correct for the crossfloat zero error. When using the offset, keep in mind that, due to differential evolution of the two PG7000 piston-cylinder temperatures, the differential pressure at zero differen tial mass load may not be zero.

Setting Differential Pressures at a High Line Pressure

 Caution

• To meet the full performance potential of PG7000 high line

differential mode operation, external influences on the piston gauges must be reduced or eliminated. Air currents and vibrations are the most significant possible influences. Do not operate near an active air conditioning or heating duct, avoid opening and closing doors or any movement of personnel around the system.

PG7000™ OPERATION AND MAINTENANCE MANUAL

• It is not possible to operate in differential mode with leaks at

any point in the test system. Thoroughly leak check the system before operation and correct any leaks detected.

• High line differential mode is often used to calibrate DUTs

whose differential pressure range is very low relative to the line pressure. Th ese DUT s can easily be ov er pressured by inadvertently applying excessive pressure to one port. When operating in high line differential pressure mode, OPEN the system BYPASS valve to zero the differential across the DUT when there is any risk of overpressure.

Before operating in diff erential mode the line pressure must be s et (see Section

3.9.4.2,

Setting a Line Pressure ([MODE], <3HLdif>, <1run>, <2yes>)).

Once the line pressur e is set, from a practical s tandpoint, operating in high line differential mode is very similar to operating in gauge mode (see Section 3.9.11).

All operat or interaction is with the PG Ter minal of the reference PG7000. The PG Terminal of the tare PG7000 is for display only. The tare PG7000 PG Terminal keypad is loc ked o ut du ring high line diffe ren tia l mode ope rati on.

Operation is in either pressure to mass or mass to pressure mode (see Section 3.9.12).

To operate in differential m ode the system BYPASS valve must be closed (see Figure 10).

All mass loading and unloading to define differential pressures is made on the reference PG70 00. Mas s load ing and unloa ding i nstruc tions fol low co nvent ional PG7000 mass loading pr ot oc ol (s ee S ectio n 3.6) b ut t he dif f er enti al mass loading instructions are “on top of” the line pressure mass load. The mass load corresponding to the line pressure on the tare and reference PG7000s must remain exactly the same throughout the differential measurements.

While in high line differential mode, the piston position and piston rotation Ready/Not Ready ind icators on the reference PG7000 ref lect the status of bot h the tare a nd the reference PG 7000s. For the indicator to indicate Ready, bot h the tare a nd the reference PG7000s m ust meet their current Ready/Not Ready criteria (see Sectio n 3.4). A <T> in a Ready/Not Ready status indicator indicates that the tare PG7000 is Not Ready.

• When operating in high line differential mode, the

measurement mode indicating character directly to the right of the pressure unit of measure in the main run screen is <d> (see Section 37).

• Zero differential pressure (BYPASS valve closed) can be set

by the system. In some cases, the dif ferential mass to lo ad to set zero is not zero. This is normal and can occur due to differential changes in the temperature of the tare and reference piston-cylinders after the original line pressure crossfloat. A differential piston-cylinder module temperature change while running in high line differential mode affects the line pressure causing an offset to the differential pressure. The offset to the differential pressure causes a non-zero differential mass load to be needed to set zero differential pressure (see Section 7.2.1). Conversely, and for the same reason, a differential mass load of zero may not result in a differential pr essure of zero.

Note

3. GENERAL OPERATION

Line P: 1000 psi T 21.24 ºC R 21.47

used in calculating corrections to the differential pressure to take into account differential

Typical Sequence to Set Differential Pressures at a High Line Pressure  Set the desired line pressure (see Section 3.9.4.2, Setting a Line

Pressure ([MODE], <3HLdif>, <1run>, <2yes>)).

 Select pressure to mass or mass to pressure mode (see Section 3.9.12).  If desired, read DUT output at zero differentia l pressure with BYPA SS valve

OPEN. Then, put the BYPASS valve in CLOSED position. Float both PG7000 pistons before oper ating the BYPASS valve. Read DUT output at zero as defined by the PG7000s if desired (this value can be used as an offset correction on subsequent DUT differential pressure outputs).

 Press [ENTER] and enter a pressure or mass value. All mass loading and

unloading to define differential pressures is performed on the reference PG7000. Follow normal PG7000 mass loading protocol (see Section 3.6). Note, however, that the mass loading instructions are “on top of” the mass already loaded to define the line pressure. The mass corresponding t o the line pressure must remain ex actly the same on both the tare and reference PG7000s throughout the differential pressure measurements.

 Float the tare and reference pistons. For best results put both pistons

slightly above the 0.0 point, for example +0.3 mm.

 When the reference PG7000 indicates Ready on both Ready/Not Ready

indicators (see Section 3.4 ), take the DUT reading at the differential pressure indicated on the to p line of the reference dis pla y. For best results log DUT readings and average them over time while the PG7000 pistons fall through th e 0. 0 m m point. Averag ing f or 10 to 30 sec onds a llo ws the random pressure noise from piston rotation to be integrated and eliminated.

 Repeat Steps  through  for each desired differential pressure point.  If the last differential press ure is zero, consider reading the DU T output with

the BYPASS valve CLOS ED. Then OPEN the BYPASS valve to set “true” zero differential pressure.

Viewing Line Pressure, Starting Piston-Cylinder Temperatu res and Natural Piston Fall Rates ([MODE], <3HLdif>, <2view>)

To view the last line pressure setting, the starting piston-cylinder module temperatures, the natural piston fall rates and the “natural fall rate difference” recorded at that line pressure, press [MODE] and select <3HLdif>, <2view>. The display is:

1. Last line pressure value set (line pressure is always in gauge mode).

2. Temperature of the reference piston-cylinder logged when the line pressure crossfloat was completed.

3. Temperature of the tare piston-cylinder module logged when the line pressure crossfloat was completed. The starting temperatures are the temperatures logged at the time the line pressure setting crossfloat was completed. These temperatures are

temperature changes in the piston after completion of the crossfloat (see Section 7.2.1 for differential pressure calculation information).

PG7000™ OPERATION AND MAINTENANCE MANUAL

T-0.91 mm/min R-1.10 ∆ -0.2 Save 1yes 2no

Press [ENTER] to continue to the next view screen or [ESCAPE] to go to the previous screen. The next view screen is:

1. Average fall rate of the tare piston recorded at the last line pressure.

2. Average fall rate of the reference piston recorded at the last line pressure.

3. Difference between the reference and tare piston average fall rates (R - T). This is the “natural fall rate difference”.

The “natural fall rate difference” is the difference between the fall rates of the two pistons when they are floating naturally at the line pressure. The “natural fall rate” can change slightly as operating conditions change so the “natural fall rate” determination and piston crossfloat procedure should be performed at the beginning of each sequence of differential pressure definitions.

To return to the <HLDif mode:> menu, press [ESCAPE]. To return to the previous run screen, press [ENTER].

Note

3.9.5 [SYSTEM]

 PURPOSE

To access the two SYSTEM run screens which display current values of PG7000 piston behavior, piston-cylinder temperature and vacuum reference (PG7601 only) measurements.

 OPERATION

To access the SYSTEM ru n sc reens, pr ess [SYSTEM] from any other run scr een. T here are two SYSTEM run screens. Pressing [SYSTEM] or [ between the first and second SYSTEM screens.

See Sections 3.9.5.1 and 3.9.5.2 for detailed information on the contents of the first and second SYSTEM run screens.

Note

The SYSTEM screens are run s creens. This means that other functions can be accessed from the SYSTEM screens and the active SYSTEM screen will be returned to when leaving functions. The MAIN screen and AMBIENT screen are also run screens (see Sec ti on 3. 8 ).

3.9.5.1 First System Run Screen

 OPERATION

The first SYSTEM r un screen provides real tim e display of piston rotation r ate, decay in piston rotation rate, piston position and piston fall rate.

To access the first SYSTEM run screen, press [SYSTEM] from any other run screen.

±] when in a SYSTEM screen toggles

3. GENERAL OPERATION

Numerical value of current

changed. Flashes when Not Ready and piston is floating (see Section 3.4.2).

when information is

nnn rpm ±nn/min ±n.nn mm ±n.nn/min

when the piston is at the low stop

The first SYSTEM run screen displays:

1. <nnn rpm>: piston rate of rotation. The unit of measure is rotations per minute [rpm] and cannot be

Indicates < ---- > unavailable or out of range.

2. <±nn/min>: Numerical value of current decay in piston rotation rate (deceleration). The unit of measure is rotations per minute [rpm/min] and cannot be changed. < ---- > when information is unavailable or out of range.

3. <±n.nn/min>: Sign and numerical value of current piston vertical rate of displacement. A negative value i ndi cates piston f alling. A positive value indicates pis t on ri sing. The unit of measure is millimeters per minute [mm/min] and cannot be changed. Indicates < ---- > when information is unavailable or out of range.

4. <±n.nn mm>: Sign and numerical value of current position of the piston within the piston stroke (see Section 3.5). The unit of measure is millimeters [mm] away from mid-stroke position and cannot be changed. I ndicates <HSTOP> when the piston is at the high stop (all the way up) and <LSTOP> (all the way down). F lashes when Not Read y and pist on is floati ng (se e Section 3. 4.1). Indicates < ---- > when information is unavailable or out of range.

Pressing [ESCAPE] in the f irst SYST EM r un sc re en re tur ns operat ion to th e M AIN run screen. Press ing [SYSTEM] or [

±] toggles bet ween the first and secon d run screen. All function keys are active from the first SYSTEM run screen and operation returns to that screen when leaving functions the were accessed from it.

Note

• The measurement systems for piston behavior indications

rely on movement of the mass loading bell. Piston behavior indications (piston position, piston rotation rate) are not valid when the mass bell is not loaded on the piston.

• See Section 3.5 for information on the piston stroke and

measurement zone.

3.9.5.2 Second System Run Screen

 OPERATION

The second SYSTEM run screen displays the values of piston-cylinder temperature and temperature rate of change measured by PG7000. PG7601 also displa ys reference vacuum and vacuum rate of change . If internal or external measurement is specified for the vacuum values in SETUP (see Section 3.10), the second S YST EM r un s cr een pro vi d es a real time display of the values measured.

To access the second SYS T EM run scr een, pres s [SYSTEM] or [±] from the first SYSTEM run screen. To acces s the first SYSTEM run sc reen, press [SYSTEM] from any run screen.

PG7000™ OPERATION AND MAINTENANCE MANUAL

negative value indicates temperature temperat ure inc re asing. The unit of

n.nn°C ±n.nn/min nnn.n Pa ±nnn.n/min

measure is degrees Centi grade per minut e [°C/min] and cannot b e changed. Indic ates < ---- >

when information is unavailable or out of range.

is out of range or greater than 20 Pascal.

The second SYSTEM run screen displays:

1. <n.nn°C>: Current piston-cylinder temperature. Source of value can be internal measurement, default or user depending on current SETUP selection (see Section 3.10 The unit of measure is degrees Centigrade

[

°C] and c annot be changed. Indicates < ----

> when information is unavailable or out of

range.

2. <+n.nn/min>: Sign and numerical value of current rate of change of temperature. A

decreasing. A positive value indicates

when information is unavailable or out of range. Indicates < ---- > when “user” or “default” is the current SETUP selection for piston-cylinder temperature source (see Section 3.10).

3. <+nnn.n/min>: (Used for PG7601 only.) Sign and numerical value of current rate of change of the vacuum reference pressure. A negat i ve value i ndi cates pressure decreasing. A positive value indicates pressure increasing. The unit of measure is Pascal per minute [Pa/min] and cannot be changed. Indicates < ---- > <Blank> if the PG7000 model is not PG7601 or if user or default is the current SETUP selection for reference vacuum (see Section 3.10).

4. <nnn.n Pa>: (Used for PG7601 only.) Current vacuum reference value. Can be internal measurement, external measurement, default or user depending on c urrent SETUP selection. Flashes when Not Ready and piston is f loating (see Section 3.4.3). The unit of measure is Pascal [Pa] and cannot be changed. Indicates < >20 Pa > if current SETUP selection is internal or external and current measurement <Blank> if PG7000 model is not PG7601.

Pressing [ESCAPE] in the s econd SYSTEM run sc reen returns operat ion to the MAIN run screen. Pressing [SYSTEM] or [ second SYSTEM run screen. All function keys are active from the second SYSTEM run screen and o peration ret urns to that screen w hen leaving f unctions that were accessed from it.

Note

The current selection in SETUP determines the source of the values used by PG7000 for piston-cylinder temperature and vacuum reference values. If the SETUP setting is user or default, the SYSTEM screen displays the user or default value, not PG7000’s on-board measurement(s).

3.9.6 [AMBIENT]

 PURPOSE

Access the AMBIENT r un screen which displa ys the current ambient conditio n values being used by PG7000 for calculations of reference pressures.

 PRINCIPLE

PG7000 uses ambient condition values to calculate the reference pressures that it defines (see Section 7.2). The source of the ambient condition values is specified in the current SETUP file (see Section 3.10). The AMBIENT run screen displays the current ambient condition values. If the SE TUP selection for the am bient condition is internal m easurement, then the AMBIENT r un screen pr ovides a rea l time dis play of the m easurem ent of PG7000’s on-board sensor for that variable.

±] toggles between the first and

 OPERATION

To access the AMBIENT run screen, press [AMBIENT] from any other run screen (MAIN or SYSTEM).

3. GENERAL OPERATION

1. <nnnnnnn uuuu>: Current numerical value and pressure

when information is unavailable or out of range.

nnnnnnn uuuu nn.n°C nn%RH n.nnnnnn/s2

2. <n.nn°C>: Current ambient temperature. Source of value can be internal measurement, default or user

Note

The AMBIENT screen is a run screen. This means that other functions can be accessed from the AMBIENT screen and the active AMBIENT screen will be returned to when leaving functions. The MAIN screen and SYSTEM screens are also run screens (see Sections 3.7 and 3.9.5).

The AMBIENT run screen displays:

unit of atmospheric pressure. Source of val ue can be internal measurement, remote barometer, default or user depending on current SETUP selection (see Section 3.10). The unit of measure is determined by the UNIT function setting (see Section 3.9.3). ATM head is applied to internal or external barometer reading to correct atmospheric pressure to the PG7000 reference level (see S ection 3. 11. 3.3). Indicates < --

-- >

Indicates <TIMEOUT> if the current SETUP selection is a remote barometer and PG7000 communication with the barometer times out.

depending on current SETUP selection (see Secti on 3.10). The unit of measure is degrees Centigrade [ºC] and cannot be changed. Indicates < ---- > when information is unavailable or out of range.

3. <n.nnnnnnm/s2>: Value of local acceleration due to gravity. Can b e default or user depending on current SETUP selection (see Section 3.10). The unit of measure is meters per second squared (m/s2) and cannot be changed.

4. <nn%RH>: Current ambient relative humidity. Can be internal measurement, default or user depending on current SETUP selection (see Section 3.10). The unit of measure is percent relative humidity (%RH) and cannot be changed. Indicates < -- > if current SETUP selection is internal and current measurement is unavailable or out of range.

Pressing [ESCAPE] in the AMBIENT run screen retur ns operation to the MAIN run screen. All function keys are active from the AMBIENT run screen and operation returns to that screen when leaving functions that were accessed from it.

Note

• The curr ent selection in SETU P determines the source of the values used

by PG7000 for atmospheric pressure, ambient temperature and relative humidity. If the SETUP setting for these values is user or default, the AMBIENT screen displays the user or default value, not PG7000’s onboard measurement(s).

• To change the ambient pressure units of measure, see Section 3.9.3.

When the current pressure unit of measure is an altitude unit, atmospheric pressure in the AMBIENT run screen is expressed in kPa if the altitude unit is meters (m) or psi if the altitude unit is feet (ft).

3.9.7 [HEAD]

 PURPOSE

To cause a pressur e value, representin g the fluid head res ulting from a dif ference in height, to be added to the pressure defined by PG7000 at its reference level. To set the height of the DUT head.

 PRINCIPLE

The pressur e def ined b y the PG700 0’s flo atin g pist on is th e pres sure at the b ottom of the pist on. This is referred to as the PG7000 r efer ence level. T he height of t he bottom of the pist on with the piston in mid-stroke position is mark ed reference level on the PG7000 piston-cylinder

module mounting post. Frequently, when performing a calibration or test, the device or system under test is at a different hei ght than t he PG7000 r eference level. T his differ ence in height (referred to as DUT head) can cause a significant difference between the pressure defined by the PG7000 at its reference level and t he pressure actuall y applied to the device under test located at a different hei ght. In this case, it is useful to m ake a head correction to the pressure defined b y the PG7000 at its reference level in order to ac curately predict the pressure actually applied at a different height. The HEAD function allows this head correction

PG7000™ OPERATION AND MAINTENANCE MANUAL

Edit DUT head height 95 cm N2

REFERENCE LEVEL

Reference

Line

(+)

(-)

to be applied a utom atical ly for a v ariet y of flui ds base d on oper ator e ntr y of the hei ght dif ferenc e. The fluid used and the H EAD function units of m easure are set by pressin g [SPECIAL] and selecting <3head> (see Section 3.11.3).

PG7000 can accurately determine head pressures for gases (nitrogen, helium and air) and liquids (Di-2 ethylhexyl Sebacate oil, water and a user defined liquid) as the pressurized medium.

• When gas is the test fluid, use of the H EAD function is most important at

low absolute pressures. In this case, specifying the head height within ± 0.2 in. (5 mm) is adequate to ensure that, even in the worst case, the uncertainty on the head correction will be insignificant relative to the tolerance on the PG7000 measurement. Use of the HEAD function to ensure tol eranc e mea sur ement s is p arti cula rly c ritic al wh en a liquid is th e test fluid, due to the high density of liquids. To determine when and how precisely a head correction for liquids must be made, 0.03 psi/inch (90 Pa/cm) may be used as an estimation of the liquid head value.

• Regardless of the head function’s setting, corrections are automatically

applied to the calculated reference pressure to compensate for the deviation between the current piston position and the mid-stroke position (see Section 3. 11 .3. 4 ).

• The pistons of certain gas operated piston-cylinder modules are hollow.

Due to their irregular shape, for these pistons, the natural reference level is not at the bottom of the piston. So that, in pra ctice, the actual r eference level is the s am e fo r all p ist on-cyl ind e r mod ules , a r efe ren ce lev el off set is applied when a hollow piston is used. The reference level offset is included in the piston-cylinde r file (see S ection 3.11.1 .1) and corr ects the reference level back to the reference point marked on the mounting post.

 OPERATION To access the HEAD function, press [HEAD]. The display is:

Note

1. Test fluid currently specified for the head correction.

2. Entry field for head height (1 to 999 cm or in.).

Entering a value of zero turns the HEAD function OFF. Entering a value other than zero turns the HEAD function ON using the height entered. Pressing [ESCAPE] returns to the main run screen with NO change to the current head setting.

3. GENERAL OPERATION

Note

• The reference height of PG7000 pressure definition is the bottom of the

piston in m id-stroke float position. This position is mar ked on the piston cylinder module mounting post and on the optional AMH, mass automated handler. The DUT head h eigh t sh ou ld b e ent e red a s a p osit iv e v alu e if t he device or syst em und er te st i s h igh er t han th e PG 70 00 ref e renc e l ev el and negative if it is lower.

• To change uni ts of DUT head height betw een inches and centimeters and

to change the test fluid, press [SPECIAL] and select <3Head> (see Se ction

3.11.3).

• When the HEAD function is ON (DUT head value different from 0), the

application of a head correction is indicated by <h> in the right side of the top line of the MAIN run screen (see Section 3.7). When the HEAD function is OFF, the <h> is NOT shown. PG7000’s also have a separate head correction to compensate for the deviation between the current piston position and mid-stroke (see Section 3.11.3.4). This P ISTON head can be turned ON and OFF (see Section 3.11.3.4).

3.9.8 [ROTATE]

 PURPOSE To turn automatic control of motorized piston rotation (acceleration and brake) ON and OFF.

Note

See Section 3.9.13 for information on manual cont rol of motorized piston rotation.

 PRINCIPLE

The motorized piston rotat ion system is used to start or incr eas e pisto n r otat ion ra t e when t he piston is floating. It is also used to stop pis ton rotation when necessar y, for example befor e manipulating mass to set a new pressure. T he system operates b y engaging a m otor driven belt around the bottom of the m ass loadin g bell to ac celerate or brak e the rotation r ate of the mass bell and piston it is loaded on. The motorized rotation system can engage with the piston at any position in its strok e and at any rotation speed with minimal impact on piston position and the defined pressure. When the motorized rotation system disengages, the piston is completely free.

With automatic motorized rotation ON, the motorized rotation system engages and disengages automatically as needed when the piston is floating to maintain the piston rotation rate above the minim um rate Ready limit (see Section 3.4.2). T he rotation rate i s measured by PG7000 on board sens ors and the rot ation r ate lim it s are set in the f ile of the ac tive pisto n cylinder (see Section 3.11.1.1). Whenever the piston is floating, the motorized rotation system will attempt to m aintain the piston rotation rate within the Ready limits (except under the cutoff mass load of 3 kg, at which the low limit is reduced to minim um to maximize free rotation time. T he piston rotat ion Rea dy/Not Rea dy indicat ion charac ter indicat es N ot Ready to alert the operator when the motorized rotat ion system is about to engage. The rotation system will not engage when the current mass load is less than the mass of the piston + mass loading bell.

The motorized rotatio n system is also used to brake and s top rotation when starting a ne w pressure point. If the piston is f loating and rotating when [ENTER/SET P] is pressed, the motorized rotation s ystem engages at a speed near t he rotation rate of the piston an d then brakes it to a stop. Pist on rotation is stopped to a void loading and unloading m asses on the rotating piston and to avoid stopping rotation by friction between the piston and the piston end of stroke stops.

With automatic motorized rotation OFF, the motorized rotation s ystem engages only when actuated by the operator . Pressing [ rotation (see Section 3.9.13).

] accelerates rotation or [ ] followed by [←] stops

PG7000™ OPERATION AND MAINTENANCE MANUAL

To access the AutoRotate functions, press

AutoRotate OFF 1on 2pre-decel

Automatic motorized rotat ion is generally left ON for normal operation. It is t urned OFF in situations where rotation system actuation independent of operator initiative is undesired (e.g. when performing a crossfloat interc omparison with another pisto n gaug e).

 OPERATION

[ROTATE]. The display is:

<AutoRotate ON> or <AutoRotate OFF> indicates the current state of AutoRotate. Use <1on> or <1off> to change the state.

When automated rotati on is OFF, the PG7000 m otorized rotation s ystem will only engage if the operator presses [

] or [ ] followed by [←] (see Section 3.9.13).

When automated rotation is ON, the automated rotation system engages automatically. When the piston is floating, it enga ges as needed to maintain the piston rot ation rate above the Ready limit (see Section 3.4.2). When [ENTER/SET P] is pressed, it engages to stop rotation before masses are loaded and/or the pressure is adjusted (this function can be turned ON and OFF, see Secti on 3.9.8.1). Manual control using [

←] is also still active.

[

] and [ ] followed by

Note

• Automatic motorized piston rotation is dependent on PG7000’s

measurements of piston position and rotation rate. These measurements are only ava ilable when the mass lo ading bell is installed on the piston. Automatic piston rotation is suspended when the current PG7000 mass load does not include the mass loading bell.

• Proper operation of the rotation system is dependent on PG7000’s

measurements of piston position. When using AutoGen, be sure that the piston position indication system is properly adjusted (see Section 5.2.2).

• When PG7 601 i s ope rating in abso lute b y v acuum m ode using th e intern al

vacuum sensor to measure reference vacuum, automatic motorized piston rotation will not engage until the reference vacuum value is within the Ready limit (see Section 3.4.3).

3.9.8.1 <2PRE-DECEL>

 PURPOSE

To turn ON and OFF a function that causes the automated rotation system to begin the piston rotation deceleration when [ENTER/SET P] is pressed rather than at the time mass is to be loaded.

On a PG7000 Platform equipp ed with m otor ized ro tati on, when AutoR otate is on, the piston rotation deceler ation function is used to stop rotation before mass es are loaded or pressure is adjusted. As the decelerat ion function can take up to one minute to execute, it can be initiated the moment that [ENTER/SET P] is pressed to enter a new press ure or mass target. The decel eration function then runs while the new target v alue is being en tered. Ho wever, when the nex t targ et does not require chang ing main mass es, it may not be necessar y to stop piston rotation. In these c ases, the running the decelera tion function is probably not desired and it is not beneficial for piston deceleration to initiate it when [ENTER/SET P] is pressed. For this reason, the function to start piston deceleration when [ENTER/SET P] is pressed can be turned ON and OFF.

If pre-deceleration is ON and AutoRotate is ON, piston rotation deceleration always initiates immediately when [ENTER/SET P] is pressed.

If pre-deceleration is OFF and AutoRotate is ON, piston rotation deceleration occurs after entr y of the pres sure or m ass tar get value and on ly if the new target requires changing m ain masses with a manual mass set or operation AMH if an automated mass handling system is active.

3. GENERAL OPERATION

 OPERATION

To turn ON and OFF the f unction that causes stopp ing piston rotation to in itiate when [ENTER /SET P] is p ressed, press [ROTATE], <2pre-decel>. The curs or is on the choice corresponding to the current state. Select <2on> for piston rotation deceleration to initiate when [ENT ER/SET P] is pres sed. Select <1off> for deceleration to initiat e only after entry of a new pressure or m ass target and only if main masses need to be m oved or AMH automated m ass handling needs to be operated. The default is <2on>.

3.9.9 [GEN] (OPTIONAL)

 PURPOSE

To turn ON and OFF automated pressure generation/control and view and edit autom ated pressure control settings. Requires that an automated pressure generation/control component be included in the PG7000 system and properly configured (see Section 2.4.9).

 PRINCIPLE

PG7000s support automated pressure generation/control components. These components, when properly configured and i nterfaced with the PG7000 platfor m, are controlled by the PG7000 platform to automatically set and adjust pressure to float the piston. Automated pressure generation and control c omponents are interfaced vi a the PG7000 platform’s CO M3 RS232 port (see Section 3.11.5.1).

Once an automated pressure generation/control component has been properly configured and interfaced with the PG7000 platform, the functions under [GEN] are used to turn automated pressure generation/control ON and OFF and to set operating parameters associated with automated pressure control.

With automated pressure generation/control ON, PG7000 uses the automated control component to float and refloat its piston when a pressure or mass value is entered. [ENTER/SET P] is pressed to initiate a new command. T he automated control function is suspended when any funct ion key is pressed, when entering rem ote mode or if automated pressure control is turned OFF.

After a target pressure or m ass has been enter ed (lo call y or rem otely) and t he r equired m ass has been loaded, the GEN f unction controls the pressure control com ponent as needed to float the PG7000 piston at the piston float target (see Section 3.9.9.1) and refloat it if necessary. If the piston moves be yond the high or low piston posit ion Ready lim it the GEN function refloats it to the piston float target. T he piston float targ et and piston po sition ready limits are user adjustable (see Section 3.10 <6READY). See Section 3.5, Figure 8 for a description piston position stroke zones and limits.

With automated pressure generation/control OFF, PG7000 leaves the automated pressure generation/control component idle and does not attempt to use it.

If an automated pressur e control component is included in the PG7000 s ystem, automated pressure generation/control is generally left ON for normal operation. It is turned OFF in situations where pressure c ontrol independent of operator initiative is undesired (e.g. when performing a crossfloat intercomparison with another piston gauge).

The [GEN] menu includes:

1. Turning the GEN function ON and OFF.

2. The adjustable piston f loat target that defines th e position to which the p iston is set when floated (see Section 3.9.9.1).

3. A choice to hav e the pist on raised to the top of the strok e befor e manipulatin g m ass using an AMH automated mass handler (see Section 3.9.9.2).

4. Viewing and setting t he UPP ER LI MI T of the automated pressure gener ati on component to avoid accidental overpressure (see Section 3.9.9.2).

5. Viewing and setting the as sum ed press ure controll er tolera nce used to det er m ine press ure setting limits when floating the PG7000 piston (see Section 3.9.9.4).

6. A c hoice to not readjust piston position if the pis ton is already floating within the Ready position limit after a new target is executed (see Section 3.9.9.5).

PG7000™ OPERATION AND MAINTENANCE MANUAL

AutoGen OFF 1on



5tol 6refloat

7. Viewing and setting the volum e of the system to which the PG7000 system is c onnected (PG7302 and PG7307 only) (see Section 3.9.9.6).

 OPERATION

To access the GEN functions, press [GEN]. The display is:

2target 3raise 4UL

<AutoGen ON> or <AutoGen OFF> indicates the c urrent state of AutoG en. Use <1on> or <1off> to change the state.

If automated pressur e control is OFF, PG7000 attempts to turn automated pr essure control ON when <1on> is pressed. To do so, communication must be established with a valid automated pressure contr ol component o ver its COM3 RS232 por t (see Section 3.11.5 .1). If PG7000 is not able to est ablish com munic ation with a valid press ure contr ol com ponent, <P control timeout, autogen off> is displayed momentarily. Correct th e communications error with the pressure control component and try again. If PG7000 is able to establish communications with a valid automated pressure control component, <Turning ON automated generation> is displayed momentarily and automated control is turned ON.

The PG7000 automated control function will attempt to float the piston within the piston position ready limits (see Section 3.4.1) after any mass to pressure or pressure to mass command once mass loading has been confirmed. It will continue to attempt to float its piston until [ENTER] is pressed to initiate a new command, a function key is pushed to interrupt AugoGen, or automated pressure control is turned OFF using [GEN].

If automated pressure control is ON and <1off> is pressed, <Turning OFF automated generation> is displayed m omentarily and automated control is turned OFF. The PG7000 automated control function is inactive.

Note

• Automated pressure generation/control ON is indicated by a <G> in the

right of the top line of the PG Terminal ma in run sc reen. The <G> flashes when automated generation is active (see Section 3.7).

• Proper operation of the automated pressure generation/control function is

dependent on PG7000’s measurements of piston position. When using AutoGen, be sure that the piston position indication system is properly adjusted (see Section 5.2.2).

• Proper operation of the automated pressure generation/control function is

dependent on PG7000’s measurements of piston position and rotation rate. These m easurem ents are onl y availa ble when the mass loading bell is installed on the piston. Automated pressure generation/control is automatica lly turned of f when the PG 7000 entere d pressure or m ass load does not include the mass loading bell.

• Automated pressure generation/control is not available when operating in

PG7000 high line dif ferentia l press ure mode (s ee Sectio n 3.9.4.2 ).

 Caution

To help protect against accidental overpressure, when using automated pressure generation/control, set the upper limit (UL) of the pressure control system using [GEN], <4UL> (see Section 3.9.9.3).

3.9.9.1 <2target>

 PURPOSE

To adjust the distanc e from midstroke to which the pis ton position must be set before the automated generation system considers the piston floating process complete (see Sections 3.9.9, 3.5).

3. GENERAL OPERATION

Note

With PG7202, AutoGen pressure control using the PPCH-G pressure control does not stop when the target piston position is reached. The PPCH-G thermal pressure control unit (TPCU) is used continuously to attempt to maintain the piston at the target position. The default target piston position for a PG7202 is mid-float position (0.0 mm).

 OPERATION

To adjust the AutoG en pist on float t arget pr ess [GEN], <2target>. Edit the val ue of the target as desired. T he default is + 1 m m (0 mm for PG7202) . The entr y should not exceed + 2.5 mm.

3.9.9.2 <3raise>

 PURPOSE

To turn ON and OFF a function tha t causes the au to mated gene ra tion component (see Section 3.9.9.) to raise the PG7000 piston to the top of its stroke before automated mass manipulation by an AMH automated mass handler. This can avoid a large pressure c han ge whi ch m ay occ ur in ce rta in circ um stanc es w hen AMH l ifts t he mas s load off of the piston.

 OPERATION

To turn ON and OFF the raise piston before mass loading fuction, press [GEN], <3raise>. The cursor is on the choice corresponding to the current state. Select <1no> for the piston not to be raised o r <2yes> to raise the piston. The defaul t is <1no>.

3.9.9.3 <4UL>

 PURPOSE

To read and/or set the UPPER LIMIT (UL) of the automated pressure generation component used by AutoGen. This function is used to protect against accidential overpressure when using the PG7000 automated pressure generation function (see Section 3.9.9 and the generation component’s Operation and Maintenan ce Manual, UL section)

 OPERATION

To view or set the UPPER LIMIT of the automated pressure control com ponent used by AutoGen, press [GEN], <4UL>.

If AutoGen is not current ly ON, the control component UPPER LIMIT cannot be accessed and an error message is displayed.

If AutoGen is ON, the curr ent UP PER LIM IT of the aut om ated control c om ponent is displayed and can be edited.

The automated pressure control component will abort pressure generation and beep repeatedly if its UPPER LIMIT is exceeded.

3.9.9.4 <5tol>

 PURPOSE

To read and/or set the pressure measuring tolerance of the pressure controller used by AutoGen to automate pressure control.

Note

This function is used only when the pressure controller is a PPC3.

PG7000™ OPERATION AND MAINTENANCE MANUAL

 PRINCIPLE

The control toler a nce funct i o n can be us e d t o reduce t h e t ime requir ed to set pr essure and float the PG7000 piston when the pressure controller used is significantly more accurate than the default tolerance value. The tolerance can also be described as the degree of agreement between the pressure control’s pressure measurement and the pressure value set by the PG7000 when its piston is floating. In general, making the tolerance smaller reduces the t ime requi red to float the pi ston and making the tolerance wider increases the time. However, if the tolerance is set too small so that it does not correctly reflect the degree of agreement between the pressure controller pressure measurement and the PG7000’s floating piston, overshoot of the piston float point or inability to float the pi ston wi ll result .

The pressure controller tol erance dete rmines, when appl icable:

a) the distan ce from the actua l pressure targe t that pressure is s et before the

AutoGen function begins to seek move ment of the piston.

b) the amount of pressure overshoot that must occur before “forced rotation” is

used to overcome possible friction between the piston and the cy linder.

This function is used only when the pressure controller is a PPC3.

Note

 OPERATION

To view or set the pressure control tolerance, press [GEN], <5tol>. The current value of the pr essure control t olerance is displa yed. The value is in

% of full scale of the pressure controller. If the pressure controller is AutoRanged, the AutoRange maximum pressure is used as full scale (see the pressure controller’s Operation and Maintenance Manual).

The default tolerance value is 0.05% of full scale. Edit the toleranc e value if desired. Do no t make the pressure toler ance less than

the worse case agr eement between t he pressure controller pressure measurem ent and the pressure indicated by the PG7000 when its piston is floating.

3.9.9.5 <6refloat>

 PURPOSE

To turn ON and OFF a function tha t causes the au to mated gene ra tion component (see Section 3.9.9.) to refloat the piston to the target piston position after a new pressure or mass target is entered, even if the piston is already floating within the piston position Ready limits. When Refloat is ON, the piston is always refloated to the target piston position after a new pressure or mass target command. This gives the full stroke of the piston to drop befor e refl oat is necess ar y. W hen Refl oat is O FF, t he time requ ired t o activate t he pressure c ontrol com ponent an d refloat the p iston is elim inated if it is n ot needed. This can result in very rapid pressure setting when the piston is still floating after a mass load change.

 OPERATION

To turn ON and OFF the Refloat function, press [GEN], <6refloat>. The cursor is on the choic e corre spondi ng to the c urre nt state. Select <1no> for the piston NOT to be controlled to the target position after a pressure or mass command if the piston is already in the Ready piston position limits. Select <2yes> for the piston to alway s to be controlled to the rai se the piston. The de fault is <2yes>.

3.9.9.6 <7Vol>

 PURPOSE

To read and/or set the volume of the system to which the PG7000 system is connected.

3. GENERAL OPERATION

Note

This function is used available only with PG7302 and PG7307.

 PRINCIPLE

The piston floating routines of PG7302 or PG7307 oil operated piston gauge us ing a PPCH automated pressure controll er are highly dependent upon the volume of the te st system into which pressure is being controlled. The VOL function is used to specify the test volume so that the PG7302 or PG7307 may scale the PPCH rates properly for the volume.

Operating with an improperly specified volume will cause the piston floating routine to be either very slow (specified volume to small) or to overshoot (specified volume too large).

Note

• If the test system volume is not known, the PPCH volume

determination function may be used to measure it. This function is run directly from the PPCH front panel (see the PPCH Operation and Maintenance Manual, {INTERNAL], <1CONFIG>).,

• The test volume can be read or set remotely (see Section

4.3.4, ).

 OPERATION

To view or set the test volu me, press [GEN], <7vol>. The current volume value is displayed. The value is in cubic centimeres (cc). The default volume is 30 cc. The maximum volume is 300 cc. Edit the volume value if desired.

3.9.10 [RES]

 PURPOSE

To set the resolution with which PG7000 loads mass in response to pressure or mass commands (see Section 3.9.12).

 PRINCIPLE

PG7000 piston-cylinder s are sized such that there is a who le number, nominal relationship between mass loaded on the piston in k ilograms [kg] and the press ure at w hich t h e pis to n will float in kilo Pasc al [kPa] or Mega Pascal [MPa] . This relationship is cal led the pressure to

mass conversion coeffic ient and is expressed as k Pa/kg or MPa/kg. The pressure to mass conversion coefficient is marked on the cap of each piston.

PG7000 mass sets are made up of masses in multiples and submultiples of the kilogram making it simple to load mass values rounded to 0.01 g, 1 g, 10 g or 0.1 kg.

When using PG7000 to def ine pressure, the desired press ure value is entered (see Sectio n

3.9.11) and PG7000 prom pts the user with the mass value t o be loaded. Due to the many variables that influence the exact pressure to mass relationship for a piston-cylinder (even though there is nominally a whole number mass to pressure relationship) the mass value to load to reach exactly the pressure requested is always an odd value. Therefore, defining the exact pressure value requested always requires loading mass with 0.01 g resolution.

When it is acceptable for the pressure values defined to not be exactly the nominal pressure value of the point, operation can be simplified and mass loading errors can be reduced by loading mass with a lower level of resolution and us ing the pressur e that the lower le vel resolution m ass load generates. F or exam ple , on a pis ton-c ylinder with a nom inal pr essur e to m ass rel ati onship of 10 kPa/kg, defining a pressure of exactly 100 kPa, nominally requires loading 10 kg of mass. However, o nce all the influences on the measurement are taken into cons ideratio n, the actual mass to load to def i ne ex act ly 100 kPa wil l not be 10 . 000 00 kg, it wil l be a v alu e nea r 10 k g such as 9.99731 kg. This value is diffic ult to load, as it r equires re latively com plex mass accounting

PG7000™ OPERATION AND MAINTENANCE MANUAL

Mass loading rsltn:

0.01 g < and >

and the mani pulation of very sm all sub-gram masses. To avo id handling a diffic ult, odd mass value, one might instead decide to load 10 kg and use whatever pressure results as the reference pressure. In this example, loading 10 kg rather than 9.99731 kg would result in defining

100.0269 k Pa rat her tha n 100. 000 0 kP a. The pr es sur e d efi ned is onl y ver y s light l y dif fere nt f rom the nominal value and there is no additional uncertainty if that value is us ed. The savi ngs in t ime and reduction of possible mass loading errors are significant.

The PG70 00 RES function i s used to cause PG 7000 to automatic ally calculat e mass loads to a whole number value starting at 0.01 g and increasing in powers of 10 to 0.1 kg. This function is very useful to make operation more convenient and less error prone when it is not imperative that the pressure defined by PG7000 be exactly the nominal p ressure of the te st or cali bration sequ ence.

The mass loading resolution of AMH automated mass handling systems is

0.1 kg. The default mass loading resolution when AMH is initialized is 0.1 kg. If resolution finer than 0.1 kg is set when AMH is active, the AMH loads the required mass value wit 0.1 kg resolution and the operator is prompted with an instruction to load the trim mass under 0.1 kg. For fully automated operation, the mass loading resolution should always be set to 0.1 kg.

 OPERATION

To access the resolutio n function, press [RES]. The display is:

Press the [←] and [→] keys to select the desired level of resolution. [←] decreases resolution and [

→] incr eases resolution. Press [ENTER] to set the selected resolution and

return to the main run screen. The resolution range is from 0.01 g to 0.1 kg in powers of 10.

Note

• The RES setting has no aff ect in mass to pressure m ode. T he RES setting

only affects the resolution of the mass commands that result from pressure entries in pressure to mass mode (see Section 3. 9.12 ).

• In PG700 0 high line differential pre ssure mode (see Sect ion 3.9.4.2), line

pressures setting is not affected by the RES setting; line pressures are always set with 0.1 kg resolution. Differential pressure mass loading resolu ti on is de ter mi ned by t he RES setting.

3.9.11 [ENTER/SET P] from Run Screen

 PURPOSE

To enter and execute pressure to mass or mass to pressure commands (see Section 3.9.12).

 PRINCIPLE

PG7000 can calculate and display the mass to be loaded to achieve an entered pressure value (pressure to mass m ode), or the pressure resulting f rom an entered mass load (mass to pressure mode) . The P mode (see Section 3.9.12).

Pressing [ENTER/S ET P] from any run screen (MAIN, SYSTEM or AMBIENT ) accesses the pressure or mass entry screen w hich allo ws the comm and value to be entere d and proc eeds through the sequence to set or read the pressure defined by PG7000.

 OPERATION

To access th e press ur e or m ass entry screen, press [ENTER/SET P] from any run scree n. T he sequence after [ENTER/SET P] has been pressed varies between mass to pressure and pressure to mass mode. The mode is selected by pressing [P See Section 3.9.11.1 for details on [ENTER/SET P] in pressure to mass mode and Section

3.9.11.2 for mass to pressure mode. See immediately below for typical operational seque nc es in gauge and absolute m odes. See Section 3.9.4. 1, differential mode operational sequence.

OR M function is used to s e t pr es sur e to m as s or mass to pressur e

OR M] (see Section 3.9.12).

Operating in Differentia l Mode, for typical

3. GENERAL OPERATION

Typical Gauge and Absolute by ATM Mode Operational Sequence

 Press [MODE] and select gauge or absolute by ATM mode as desired (see Section 3.9.4).  Press [P OR M] and sele ct pressure to mass or mass to pressure mode (see Section 3.9.12 ).  Press [ENTER/SET P] and enter a pressure or mass value. If the piston is floating and

AutoRoate is ON, the braking function engages to stop piston rotation (see Section 3.9.8).

 Load mass as instructed ( see Sectio n 3.6). If an AMH automated m ass handling system

is active, the mass is loaded automatically with resolution of 0.1 kg.

 Use the system pressure control com ponent to float the PG7000 pis ton. If the AutoGen

function is ON, the autom ated pr es sure cont rol c om ponent floats the piston aut o m atically (see Section 3.9.9).

 When PG7000 indicates Ready on a ll Ready/Not Ready indicators (see Section 3.4), t ake a

DUT reading at the pressure indicated on the top line of PG7000 display.

 Repeat Steps  through  for each desired pressure value.

Typical Absolute by Vacuum Mode Operational Sequence (PG7601 Only)

 Press [MODE] and absolute by vacumm (avac) mode (see Section 3.9.4).  Press [P OR M] and sele ct pressure to mass or mass to pressure mode (see Section 3.9.12).  Press [ENTER/SET P] and enter a pressure or m ass value. If AutoRoate is ON, the

braking function engages to stop piston rotation (see Section 3.9.8).

 Load mass as instructed (see Section 3.6). If an AMH automated mass handling

system is active, the mass is loaded automatically to resolution of 0.1 kg.

 Install bell jar on PG7000, shut PG7000 vacuum vent valve, open vacuum reference

shutoff valve. Wait for vacuum under bell jar to reach Ready condition (see Section 3.4.3).

 Use system pressure control component to float the PG7000 piston. If the AutoGen

function is ON, the autom ated pr es sure cont rol c om ponent floats t he piston auto m aticall y (see Section 3.9.9).

 When PG7000 indicates Ready on a ll Ready/Not Ready indicators (see Section 3.4), t ake a

DUT reading at absolute pressure indicated on the top line of the PG7000 display.

 Shut vacuum reference s hutoff valve, open vacuum vent valve. W ait for press ure under

bell jar to return to ambient. Remove bell jar. If an AMH automated mass handling sys te m is active and mass loading r esolution is 0.1 k g, the vacuum does not need to be broken and reestablished at each increment since the masses are moved automatically.

 Repeat Steps  through  for each desired differential pressure point.

3.9.11.1 [ENTER/SET P] in Pressure to Mass Mode

 PURPOSE

To enter and execute a press ure to mass command in pressure to mass mode (see Section 3.9.12).

 OPERATION

Put the PG7000 in pressure to mas s operation mode (see Section 3.9. 12), then press [ENTER/SET P] in any run screen. If automated rotation is on, the

<DECELERATING> screen shows until piston deceleration is complete.

Note

Pressing [ENTER] in the run screen causes automated pressure generation to be suspended if ON (see Section 3.9.9) and AutoRotate to stop piston rotation if ON (see Section 3.9.8). When [ENTER] is pressed to confirm mass entry, automated pressure generation and/or motorized rotation resume.

PG7000™ OPERATION AND MAINTENANCE MANUAL

Target pressure:

100.0000 kPa a

Load nominal mass:

10.0 kg and 3.17 g

The display is:

1. Current measurement mode (see Section

3.9.4).

2. Current pressure unit of measure (see Section

3.9.3).

3. Entry field for the target value of pressure to be set.

Use the numerical keys and editing keys to enter the target pressure value desired. Press [ENTER/SET P] to process the target pressure value. If the pressure

value entered cannot be executed, an explanatory error message is displayed momentarily and op eration returns to the target pres sure entry screen with the previous target pressure va lue displayed. If the target pressure value entered is valid, the value is processed and operation proceeds to the mass loading instruction screen. The display is:

1. Mass to load using trim masses.

2. Nominal mass to load using main and fractional masses.

Note

If an AMH automated mass handlin g system is activ e and mass loading resolution is set to 0.1 kg, the AMH loads the mass automatically. As it does, the steps of its operation are displayed. If resolution is set to higher than 0.1 kg, the operator is prompted to load the trim mass value.

With PG7601 in absolute by vacuum measurement mode (see Section 3.9.4), the instruction is <Load mass & vac:> indicating that the nominal mass value should be loaded and then the bell jar should be installed and vacuum established under the bell jar.

Load the nominal m ass value foll owing the pr otocol d escribed in Section 3 .6 and press [ENTER/SET P]. When [ENTER/SET P] is pressed confirming that the nominal mass value has been loaded, operation returns to the previous run screen with the new pressure target and mass value active.

 Caution

To make “in tolerance” measurements, it is imperative that all mass loading instructions be executed following the protocol describe in Section 3.6. This ensures that the actual mass value resulting from a nominal mass loading command will be correct. Failure to load masses following the PG7000 mass loading protocol is likely to result in out of tolerance mass load determinations and pressure definitions.

Note

• The resolution with which the pressure to mass mode m ass

loading instruction is given depends on the resolution set in the RES function. The RES function makes it possible to avoid loading high resolution mass values when it is not imperative that the pressure defined be exactly the nominal pressure requested (see Section 3.9. 10) .

• The pressure to mass loading instruction is given in

nominal mass while the main run screen displays the true mass loaded. For this reason, the nominal mass loading instruction and the true mass displayed in the main run screen are slightly different values. This is normal operation (see Section 3.6).

3. GENERAL OPERATION

Load nominal mass:

10.0 kg and 3.17 g

3.9.11.2 [ENTER/SET P] in Mass to Pressure Mode

 PURPOSE

To enter and execute a mass t o pressure command in mass to pressure mode (see Section 3.9.12).

 OPERATION

Put the PG7000 in mass to press ure operation mode (see Section 3.9. 12), then press [ENTER/SET P] in any run screen. If automated rotation is on, the

<DECELERATING> screen shows until piston deceleration is complete.

Note

The display is:

1. Edit field for total trim mass currently loaded.

2. Edit field for nominal mass of main and fractional masses currently loaded.

Use the numerical and editing keys to enter the nominal mas s to be loaded on the piston following the mass loading protocol described in Section 3.6. Press [ENTER/SET P] to process the mass value. If the mass value entered cannot be executed, an ex planatory error mess age is dis played m om entar ily and operation returns to the m ass entry scr een with the pr evious nom inal m ass value displayed. If the mass value entered is valid, the value is processed and operation proceeds to the previous run screen with the new mass value active.

 Caution

To make “in tolerance” measurements, it is impe rative that the value of mass loaded on the piston be the NOMINAL mass following the protocol describe in Section 3.6. This ensures that PG7000 will correctly determine the true mass value loaded. Failure to enter nominal mass values following the PG7000 mass loading protocol is likely to result in out of tolerance mass load determination and pressure definitions.

Note

• The setting of the RES function has no effect on the

resolution of mass load entries in mass to pressure mode (see Section 3.9.10).

• The mass to pressure mass entry is exp ressed in nominal

mass while the MAIN run screen displays the true mass loaded. For this reason, the nominal mass loading instruction and the true mass displayed in the main run screen are slightly different values. This is normal operation (see Section 3.6).

3.9.11.3 Commands for Zero Pressure, Ending a Test

Entering a value of zero as the target presure is a convenient w ay to end a test and vent the automated pressure control component when AutoGen is ON.

PG7000™ OPERATION AND MAINTENANCE MANUAL

Unknown pressure except in absolute by current value of atmospheric pressure is atmospheric pressure when the system is

???----- psi a

--- mm --------kg

Select entry mode: 1pressure 2mass

Entering a value of zero in pressure to mass mode causes the following sequence to occur:

 Stop piston rotation if AutoRotate is ON.  Vent pressure cont rol co mponent if AutoG en is ON or prompt op erato r to vent.  A special run screen disp lays reflecting that the PG7000 is at rest an d the

mass loading bell may not be installed. The display is:

1. <?> in ready/not ready indicator positions as status of piston is unknown since mass loading bell may not be installed.

2. atmosphere measurement mode in which the

displayed. This is the value of absolute by vented.

3. Unknown/meaningless mass load.

4. Unknown/meaningless piston position.

3.9.12 [P OR M]

 PURPOSE

To select between PG7000 pressure to mass or mass to pressure operation mode.

 PRINCIPLE

Piston gauges are generally used either to define desired pressure set points (e.g. when applying reference pressures to a device to be calibr ated) or to measure a static pressur e (e.g. when performing a crossfloat intercomparison with another piston gauge). PG7000s support thes e two typical situations with two operating modes: pr essure to mass and mass to pressure.

In pressure to mass operating mode, the operator enters target pressure values and the PG7000 provides instructions of the mass to load to achieve the desired target press ur e.

In mass to press ure operating m ode, the operator enters the mass currently l oaded and the PG7000 determines the pressure resulting from the current mass load. Mass to pressure mode is also useful to determine the true mass resulting from a nominal mass load (see Section 3.6).

OR M function is used to s et the PG 7000 op erating m ode to eit her pres sure to mas s or

The P mass to pressure.

 OPERATION

Note

For details on pressure to mass and mass to pressure operation, see Section 3.9.11.

To access the P OR M function, press [P OR M], the display is:

Selecting <1pressure> activates pressure to mass mode and returns to the previous run screen. Selecting <2mass> activates mass to pressure mode and returns to the previous run screen.

3.9.13 [ ] and [ ], [←]

 PURPOSE

To activate motorized piston rotation manually.

 PRINCIPLE Motorized rotati on engages and disenga ges to rot ate or stop the rota tion of the PG7000 piston.

3. GENERAL OPERATION

12 rpm ACCELERATING + 2.05 mm 0.1/min

48 rpm DECELERATING + 2.05 mm 0.1/min

Motorized rotation can be set to operate automatically to maintain the piston within Ready condition rotation rate lim its when the piston is f loating and stop rot ation before chang ing the pressure or mass load (see Section 3 .9.8). Motorized rotation can a lso be eng aged m anuall y to accelerate or brake piston rotation at any time under direct operator control.

] is used for m omentary acceleration of piston rotat ion. [ ] followed by [←] is used to

[

start a function that stops piston rotation.  OPERATION To momentarily engage th e m ot ori zed pist on r ota tio n s ystem and accelerate the pi s ton, pres s

] from any run screen. If PG7000 is equipped with motorized rotation, the motorized

[

rotation system engages and remains engaged until maximum rotation rate has been achieved or the key is released.

The display is a modified version of the 1

system run sc reen to indicate the p is to n rot a tio n is

being accelerated while showing rotation rate and position:

1. Current piston rotation rate.

2. Current rate of piston vertical displacement.

3. Current piston position.

To start the piston braking function press and hold [

], then press [←]. If PG7000 is equipped with m otorized rotat ion, the motori zed rotatio n system engages and sta ys engaged until the piston rotati on is s toppe d. O nce the braking func tion st ar ts the keys may be released and the function will complete unless [ESCAPE] is pressed.

The display is a modified version of the 1st system run sc reen to indicate the p is to n rot a tio n is being decelerated while showing rotation rate and position:

1. Current piston rotation rate.

2. Current rate of piston vertical displacement.

3. Current piston position.

To interrupt the piston rotation braking routine, press [ESCAPE].

Note

• Most PG7000 platforms produced before 2006 use a solenoid based

rotation actuation system. The system is protected against overloading. If the duty cycle becomes excessive, motorized rotation cuts OFF and remains off for a 25 second delay. During the cutoff time, [

] has no

effect.

• The motorized rotation sy stem can be set to operate automatically based

on current piston position and rotation rate. See Section 3.9.8 for information.

• In PG7000 high line differentia l mode (see Section 3.9.4.2), p ressing [

] on the reference PG7102 engages motorized rotation on both the reference and tare PG7000s.

PG7000™ OPERATION AND MAINTENANCE MANUAL

3.10 [SETUP] Menu

 PURPOSE To select, view and edit th e SETUP files that det ermine the so urce of the values that PG7000 uses in its

calculation of defined pressure and as criteria for Ready/Not Ready condition determination.  PRINCIPLE PG7000 piston gauges perform continuous, real time calculations of the pressure defined by the floating

piston under current conditions (see Section 7.2 for the details on the calculations applied). The calculations are used to determine the defined pressure displayed in the MAIN run screen, and to arrive at the mass to load value when a target pressure is entered in pressure to mass mode.

The equations that PG700 0 uses to calculate pressur e include many instrument and am bient variables. PG7000 allows the source of the value used f or each variable to be defined. For example, the value of barometric pressure used to calculate current air density and to add to gauge pressure to define absolute pressure in absolute by atmosphere m ode could come either from PG7000’s internal sensor, an external barometer connected to PG7000’s COM2, a user entered value or be set to standard atmospheric pressur e. The PG70 00 SETUP f unction allows the s ource (an d in som e cases t he value) of the variables used in the pres sure equations to be specified. In order to allow var ious combinations of sources and/or values to be s etup and r ecalled, SETUP f iles can be creat ed, stor ed, edited and reca lled. The SETUP files also include certain variables used to determine PG7000 Ready/Not Ready status. Table 19 identifies the vari ables included in the SETUP file, the f actory source setting for each variable and the default value for each variable.

Variable source and value s electi ons are r ec orded in SET U P f iles. These files can be stored and rec al le d so that specific com binations of variable sour ces and/or values ca n be convenientl y recalled. There are 20 SETUP files. File #1 is a factory SETUP file that cannot be edited. It includes the factory default variable choices and values.

Note

SETUP files, USER values and PG7000’s calculation capabilities can be used to calculate defined pressure in specific conditions independent of actual PG7000 operation.

The SETUP function supports the following:

• View SETUP files (see Section 3.10.2);

• Create/edit SETUP files (see Section 3.10.3);

• Select active SETUP file (see Section 3.10.1).

3. GENERAL OPERATION

Current SETUP: #01 1select 2view 3edit

Table 19. SETUP File Choices, Factory Preferred Choice and Normal Value

VARIABLE

Atmospheric pressure 1. Internal

Ambient temperature 1. Internal

Ambient relative humidity 1. Internal

Piston-cylinder temperature

Gravity 1. Local

Vacuum (PG7601 only)

Ready/Not Ready Piston position

Ready/Not Ready Maximum vac uum reference pressure in absolute by vacuum mode (PG7601 only)

SOURCE

CHOICES

2. Normal

3. User

4. COM2

2. Normal

3. User

2. Normal

3. User

1. Internal

2. Normal

3. User

2. Normal

3. User

1. Internal

2. Normal

3. User

4. COM2

1. User 1. User

1. User 1. User 5 Pa (default)

FACTORY

DEFAULT CHOICE

1. Internal 101.325 kPa

1. Internal 20 °C

1. Internal 45 %RH

1. Internal 20 °C

1. Local 9.806650 m/s

1. Internal 0 Pa

NORMAL VALUE

(14.6959 psi)

± 2.5 mm from midfloat position (default)

Note

The factory default SETUP choice is the SETUP choice setting for all variables in a new SETUP file. SETUP file #1 is f ixed to fa ctory SE TUP choices and cannot be altered.

 OPERATION

To access the SETUP menu, press [SETUP] from the main run screen. The display is:

#nn in the upper right hand corner displays the number of the SETUP file that is currently active. Select <1select> to select a diff erent ac ti ve SET UP f il e. Se lect <2view> to vie w the v aria bl e c hoic es and

values of the active SETUP file. Select <3edit> to create or edit a SETUP file. See Sections 3.10.1 to 3.10.3 for detailed information on each SETUP function operation.

3.10.1 <1select>

 PURPOSE

To change the active SETUP file number.

PG7000™ OPERATION AND MAINTENANCE MANUAL

View SETUP file: #02

View #02 latmP 2ambT



7vac

Changing the current SETUP file will change the source and in some cases the values of the variables used by PG7000 in calculating defined pressure. SETUP files should be selected and changed only b y qualified personnel. Incorrect SETUP file selection may cause out of tolerance calculations and measurements. See Section 3.10, PRINCIPLE, for information on SETUP files and their use.

 OPERATION To select a SETUP file num ber to make it the active SETUP file, press [SETUP] and select

<1select>. In the fol lowing screen enter the number of the desired SETUP file and press [ENTER]. If a va lid SETUP file n umber has been entered, operatio n returns to t he previous

run screen with the selected SETUP file number displayed and active.

• Entering an invalid SETUP file number causes an error message to be

displayed briefly and returns to the select SETUP file screen.

• If the SETUP file selected specifies COM2 as the source of barometric

pressure, PG7000 will attempt to read a barometer on COM2 when initializing the new SETUP file. If PG7000 is unable to read a barometer on COM2, a communications time out message is displayed briefly and operation r etu rns t o th e s ele ct S ETU P fi le s cre en. See S ect ion 3.1 1.5 .4 f or information on configuring COM2 to read an external barometer.

 Caution

Note

3.10.2 <2view>

 PURPOSE

To view the variable source choices and values of any SETUP file number.

 OPERATION

Note

• Selecting <2view> SETUP allows the variable source choices and values of

the active SETUP fi le for viewing o n l y. <2v i ew> does not m a ke the viewed SETUP file active. To select the active SETUP file, press [SETUP] and select <1select>.

• See Table 19 for a listing of the source choices for each variable.

To view an existing SETUP file, press [SETUP] and select <2view>. The display is:

1. Entry field for number of SETUP file to be viewed. Defaults to SETUP file currently selected. Must be a number from 2 to

10.

Enter the desired SETUP file number and press [ENTER].

If a valid SETUP file number is entered, the display is:

Select <1atmP> to view the atmospher ic pressure variable source choic e and current value. The value is displayed in the current pressure units (see Section 3.9.3).

Select <2ambT> to view the ambient temperature variable source choice and the current value. The value is displayed in degrees Centigrade [

Select <3%RH> to view the am bient relati ve humidit y variable sourc e choice an d the current value. The value is displayed in %RH.

3%RH 4PCT 5g 6READY

°C].

3. GENERAL OPERATION

Entry field for number of SETUP file to be edited or created.

Edit SETUP file: #02

Edit #02 latmP 2ambT



7vac

Select <4PCT> to view the piston-cylinder temperature variable source choice and the current value. The value is displayed in degrees Centigrade [

Select <5g> to view the gravity variabl e source choice and the c urrent value. The value is displayed in meters per second squared [m/s

°C].

Select <6READY> to vie w the values of Ready/Not Ready status criteria (see Section 3.4). These include:

<1Pposition>:

<2vac> (PG7601 only):

Piston position Ready/Not Ready limits (see Section 3.4.1). The value is displayed as a band in millimeters about mid-float position [

3.5). Maximum reference vacuum pressure limit when operating in absolute by

vacuum mode. The value is displayed in Pascal [Pa].

mm] (see Section

Select <7vac> ( PG7601 only): to view the reference vacuum variable sour ce choice and the current value. The value is displayed in Pascal [Pa].

3.10.3 <3edit>

 PURPOSE

To edit an existing SETUP file and/or to create a new SETUP file.

Note

See Section 3.10, PRINCIPLE for information on SETUP files and their purpose.

 OPERATION

• SETUP file #1 is t he fac tory pr efe rr ed f il e an d it c an no t be edi ted .

• See Table 19 for a listing of the source choices for each variable.

To edit an existing SETUP file or create a new SETUP file, press [SETUP] and select <3edit>. The display is:

1. Defaults to SETUP file currently selected. Must be a number from 2 to 10.

Enter the desired SETUP file number and press [ENTER].

If a valid SETUP file number is entered, the display is:

Selecting an item leads to t he varia ble sourc e choices menu for that item . The c ursor is on the source choice that is currently selected in that SETUP file number. Select the desired variable source. The selec tion causes the variable ch oice selection to be made and retur ns to the edit menu. From the variable source choic e menus, pressing [ENTER] or [ESCAPE] returns to the edit selection menu. This allows e asy, discreet movement between variable source choices when editing a SETUP file.

Select <1atmP> to specify the atmospheric pressure var iable source f or the pres sure values that are used to calculate am bient air density and to add t o g aug e pr es sur e measurements to calculate absolute pr es sur e in abs o lute by addition of atmosphere mode. Selecti n g <1atmP> offers the atmospheric pressure variable source choices:

<1internal>

<2normal>

<3user>

Note

3%RH 4PCT 5g 6READY

Use real time readings from PG7000’s on-board barometer. Use a fixed value of 101.325 kPa (14.6959) psi. Use a fixed user entered value. If <3user> is selected, the user value must be

entered, in the current pressure unit of measure (see Section 3.9.3).

PG7000™ OPERATION AND MAINTENANCE MANUAL

<4COM2>

Use real time readings from the device connected by RS232 to PG7000’s COM2 port. The external barometer must be properly set up to communicate with PG7000 (see Section 3.11.5.4 for information on setting up to read an external barometer).

Note

For differential mode operation (see Section 3.9.4) the AtmP selection must be <4COM2>.

Select <2ambT> to specify the ambient temperature variable source for the temperature values that are used to calculate ambient air density. Selecting <2ambT> offers the temperature variable source choices:

<1internal>:

<2normal>:

<3user>:

Use real time readings from PG7000’s on-board ambient temperature platinum resistance thermometer (in the Temperature - Humidity (TH) Prob e on the platform rear panel).

Use a fixed value of 20 °C. Use a fixed user entered value. If <3user> is selected, the user value must be

entered, in degrees Centigrade [

C].

Select <3%RH> to specify the relative humidity variable source for the relative humidity values that are used to c alculate ambient air dens ity. Selecting <3%RH> of fers the relative humidity variable source choices:

<1internal>:

<2normal>:

<3user>:

Use real time readings from PG7000’s on-board relative humidity sensor (in the Temperature - Humidity (TH) Probe on the platform rear panel).

Use a fixed value of 45 %RH. Use a fixed user entered value. If <3user> is selected, the user value must be

entered, in percent relative humidity [%RH].

Select <4PCT> to specif y the pist on-c ylinder tem per ature var iable sourc e for the tem per ature values that are used to co mpensate piston-cylinder effective are a for tem perature. Selecting

<4PCT> offers the temperature variable source choices:

<1internal>:

<2normal>:

<3user>:

Use real time readings from PG7000’s on-board piston-cylinder temperature platinum resistance thermometer (embedded in the piston-cylinder module mounting post).

Use a fixed value of 20 °C. Use a fixed user entered value. If <3user> is selected, the user value must be

entered, in degrees Centigrade [

C].

Select <5g> to spec ify the value of ac celeration due to gravity that is used in calc ulating the force applied to the piston. Pressing <5g> offers the gravity variable source choices:

<1locall>:

<2normal>:

<3user>:

Use the fixed value of local gravity stored under [SPECIAL], <6gl> (see Section

3.11.6). Use a fixed value of 9.806650 m/s Use a fixed user entered value different from the current local gravity value

stored in the [SPECIAL], <6gl> menu option. If <3user> is selected, the user value must be entered, in meters per second squared [m/s

Select <6READY> to edit the values of Ready/Not Ready status criteria (s ee Section 3.4). These include:

<1position>:

<2vacl>

(PG7601 only):

Piston position limits. Edit the fixed value, in millimeters [mm], of the band around mid-float position within which the piston position is Ready (see Section 3.4.1). This also determines the limit at which the piston is refloated by the GEN function when GEN is ON (see Section 3.9.9).

Maximum reference vacuum pressure when operating in absolute by vacuum mode. Edit the value, in Pascal [Pa], under which the reference vacuum must be for a vacuum Ready condition to occur (see Section 3.4.3).

Fluke PG7102, PG7202, PG7302, PG7601 User's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Tables

Figures

About This Manual

1. Introduction

1.1 Product Overview

1.2 Specifications

1.2.1 General Specifications

1.2.1.1 Embedded Features

1.2.1.2 Ambient and Instrument Condition Measurements

1.2.2 Piston-Cylinder Modules

1.2.2.1 PC-7100/7600

1.2.2.2 PC-7200

1.2.2.3 PC-7300

1.2.3 Mass Sets

1.2.4 Pressure Measurements

1.2.4.1 PC-7100/7600

1.2.4.2 PC-7200

1.2.4.3 PC-7300

1.3 Terminal and Platform Front and Rear Panels

1.3.1 Terminal Front and Rear Panels

1.3.1.1 PG Terminal Front Panel

1.3.1.2 PG terminal Rear Panel

1.3.2 Platform Rear Panels

2. Installation

2.1 Unpacking And Inspection

2.1.1 Removing from Packaging

2.1.1.1 Platform

2.1.1.2 Mass Set

2.1.1.3 Piston-Cylinder Module(s)

2.1.1.4 Automated Mass Handler

2.1.2 Inspecting Contents

2.1.2.1 Platform

2.1.2.2 Mass Set

2.1.2.3 Piston-Cylinder Module(s)

2.2 Site Requirements

2.3 Setup

2.3.1 Preparing for Operation

2.3.1.1 Setting Up the Platform

2.3.1.2 System Pressure Interconnections

2.3.1.3 Setting Up a Mass Set

2.3.2 installing a Piston-Cylinder Module into the Platform

2.4 Power Up and Verification

2.4.1 Power UP

2.4.2 Check that On-Board Piston-Cylinder Module and Mass Set Information are Correct

2.4.3 Set Local Gravity Value

2.4.4 Setup Pressure Equation Va riable Input Sources

2.4.5 Check Proper Operation of Ambient Condition Measurements

2.4.6 apply pressure to THE piston-cylinder module

2.4.7 Check Proper Behavior of Mot orized Piston Rotation

2.4.8 Check Proper Operation of Pis t on Behavior Measurements

2.4.8.1 Verify Vacuum Reference (PG7601 Only)

2.4.9 Check Automated Pressure Generation (If Present)

2.4.10 Check/Set Security Level

2.4.11 Additional Pr e c a uti ons t o Tak e Bef ore Ma king Pressure Measurements

2.5 Short Term Storage

3. General Operation

3.1 Fundamental Oper ati ng Principles

3.1.1 Gas Operated, Liquid Lubric a t e d Piston-Cylinder Operating Princi ple (PG7202)

3.2 Keypad Layout And Protocol

3.3 Sounds

3.4 Pressure Ready/Not Ready Indication

3.4.1 Piston Position Ready/Not Ready

3.4.2 Piston Rotation Ready/ Not Re a dy

3.4.3 Vacuum Reference Ready/Not Ready (PG7601 Only)

3.5 Piston Position

3.6 Mass Loading Protocol

3.7 Main Run Screen

3.8 General Function/Menu Flow Chart

3.9 Direct Function Keys

3.9.1 Direct Function Ke ys Summary

3.9.2 [P-C]

3.9.3 [UNIT]

3.9.3.1 Customizing Pressure Units Available Under the UNIT Function

3.9.4 [MODE]

3.9.4.1 Differential Measurement Mode (PG7601 Only)