Fluke A20M-AF, A70M, HPMS User Manual

0 (0)
© 2007 DH Instruments, a Fluke Company
RPM4/HPMS A70M/A20M-AF™
Reference Pressure Monitor with
High Pressure Mounting System
Operation and Maintenance Manual
NSN 6685-01-529-6990 RN
(2 of 3)
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company
High pressure liquids and gases are potentially hazardous. Energy stored in these liquids and gases can
be released unexpectedly and with extreme force. High pressure systems should be assembled and operated
only by personnel who have been instructed in proper safety practices.
This instrument is not to be operated in any other manner than that specified by the manufacturer.
© 2007 DH Instruments, a Fluke Company All rights reserved.
Information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any
form or by any means, electronic or mechanical, for any purpose, without the express written permission of DH Instruments, a
Fluke Company 4765 East Beautiful Lane, Phoenix AZ 85044-5318, USA.
DH Instruments makes sincere efforts to ensure accuracy and quality of its’ published materials; however, no warranty, expressed
or implied, is provided. DH Instruments 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 DH Instruments of that product or brand. This manual was originally composed in English 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 more of the following U.S. patents:
5,142,483; 5,257,640; 5,331,838; 5,445,035. Other U.S. and international patents pending.
AutoRange, AutoZ, DH Instruments, DH, DHI, CalTool, COMPASS, GPC1-1000, PGC-1000-AF, RPM4, QDUT, Q-RPT, RPM4 and
SDS are trademarks, registered and otherwise, of DH Instruments, a Fluke Company.
Document No. 550136b-01
070627
Printed in the USA

TABLE OF CONTENTS

Page I © 2007 DH Instruments, a Fluke Company
T
T
A
A
B
B
L
L
E
E
O
O
F
F
C
C
O
O
N
N
T
T
E
E
N
N
T
T
S
S
TABLE OF CONTENTS ...............................................................I
TABLES.................................................................................. V
FIGURES................................................................................VI
ABOUT THIS MANUAL............................................................ VII
1. INTRODUCTION ................................................................. 1
1.1 PRODUCT OVERVIEW ...........................................................................................................................1
1.2 SPECIFICATIONS ...................................................................................................................................2
1.2.1 GENERAL SPECIFICATIONS.......................................................................................................................2
1.2.2 PRESSURE MEASUREMENT SPECIFICATIONS .......................................................................................3
1.2.2.1 QUARTZ REFERENCE PRESSURE TRANSDUCERS (Q-RPT)..............................................................3
1.2.2.2 ON-BOARD BAROMETER ........................................................................................................................3
2. INSTALLATION .................................................................. 5
2.1 UNPACKING AND INSPECTION............................................................................................................5
2.1.1 REMOVING FROM PACKAGING .................................................................................................................5
2.1.2 INSPECTING CONTENTS.............................................................................................................................6
2.2 PGC-10000-AF SYSTEM.........................................................................................................................6
2.3 SITE REQUIREMENTS............................................................................................................................7
2.4 SETUP .....................................................................................................................................................8
2.4.1 PREPARING FOR OPERATION...................................................................................................................8
2.4.2 RPM4/HPMS FRONT, REAR AND SIDE VIEWS..........................................................................................8
2.4.2.1 RPM4/HPMS FRONT VIEW ......................................................................................................................8
2.4.2.2 RPM4/HPMS REAR VIEW.........................................................................................................................9
2.4.2.3 RPM4/HPMS SIDE VIEW ........................................................................................................................10
2.4.3 RPM4 FRONT AND REAR PANELS ..........................................................................................................10
2.4.3.1 RPM4 FRONT PANEL .............................................................................................................................10
2.4.3.2 RPM4 REAR PANEL................................................................................................................................11
2.4.4 POWER CONNECTION...............................................................................................................................11
2.4.5 FOOTSWITCH CONNECTION....................................................................................................................11
2.4.6 TEST PORT CONNECTION........................................................................................................................11
2.4.6.1 THE ATM PORTS OF RPM4 ...................................................................................................................12
2.4.7 CHECK/SET SECURITY LEVEL.................................................................................................................12
2.4.8 SETTING UP AUTOTEST FILES ................................................................................................................12
2.5 POWER-UP AND VERIFICATION.........................................................................................................13
2.5.1 SWITCH POWER ON ..................................................................................................................................13
2.5.2 CHECK PRESSURE MEASUREMENT OPERATION ................................................................................13
2.5.2.1 CHECKING ABSOLUTE MODE PRESSURE MEASUREMENT.............................................................13
2.5.2.2 CHECKING GAUGE MODE PRESSURE MEASUREMENT...................................................................13
2.6 SHORT TERM STORAGE.....................................................................................................................14
2.7 LONG TERM STORAGE AND/OR PREPARATION FOR SHIPPING ..................................................14
3. OPERATION..................................................................... 15
3.1 USER INTERFACE................................................................................................................................15
3.1.1 MAIN RUN SCREEN....................................................................................................................................15
3.1.2 FUNCTION / DATA KEYPAD LAYOUT AND PROTOCOL........................................................................17
3.1.3 REMOTE [ENT] (ENTER) FOOTSWITCH...................................................................................................18
3.1.4 SOUNDS......................................................................................................................................................18
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page II
3.2 GENERAL OPERATING PRINCIPLES.................................................................................................18
3.2.1 PRESSURE READY/NOT READY..............................................................................................................18
3.2.2 GAUGE MODE, DYNAMIC COMPENSATION FOR ATMOSPHERIC PRESSURE ..................................19
3.2.3 MULTIPE RANGES (Q-RPTS, AUTORANGE AND INFINITE RANGING) ................................................19
3.2.4 AUTOMATED TEST AND CALIBRATION SEQUENCES ..........................................................................20
3.2.5 HPMS (HIGH PRESSURE MOUNTING SYSTEM) .....................................................................................20
3.2.6 DIRECT FUNCTION KEYS SUMMARY......................................................................................................24
3.3 DIRECT FUNCTION KEYS....................................................................................................................24
3.3.1 [RANGE]......................................................................................................................................................24
3.3.2 [UNIT]...........................................................................................................................................................26
3.3.3 [MODE] ........................................................................................................................................................27
3.3.4 [AUTORANGE]............................................................................................................................................27
3.3.5 [LEAK CK]...................................................................................................................................................29
3.3.6 [DISPLAY]....................................................................................................................................................31
3.3.6.1 AVG (AVERAGE).....................................................................................................................................32
3.3.6.2 RATE........................................................................................................................................................33
3.3.6.3 DEV (DEVIATION) ...................................................................................................................................34
3.3.6.4 RPT ..........................................................................................................................................................35
3.3.6.5 HI/LO........................................................................................................................................................36
3.3.6.6 FREEZE ...................................................................................................................................................37
3.3.6.7 CLEAN .....................................................................................................................................................37
3.3.7 [HEAD].........................................................................................................................................................38
3.3.8 [SDS]............................................................................................................................................................39
3.3.9 [AUTOZ].......................................................................................................................................................39
3.3.9.1 [AUTOZ] IN GAUGE MODE.....................................................................................................................39
3.3.9.2 [AUTOZ] IN ABSOLUTE MODE...............................................................................................................40
3.3.10 [ENT] (RUN AUTOTEST)............................................................................................................................43
3.3.10.1 AUTOTEST INITIALIZATION...................................................................................................................44
3.3.10.2 TEST EXECUTION ..................................................................................................................................45
3.4 [SETUP].................................................................................................................................................47
3.4.1 <1RANGE> ..................................................................................................................................................47
3.4.1.1 SAVING AN AUTORANGE RANGE ........................................................................................................47
3.4.1.2 DELETING AUTORANGE RANGES .......................................................................................................48
3.4.2 <2RES> (RESOLUTION).............................................................................................................................48
3.4.3 <3STAB>......................................................................................................................................................49
3.4.4 <4UL> (UPPER LIMIT) ................................................................................................................................50
3.4.4.1 OVER PRESSURE FUNCTION...............................................................................................................50
3.4.5 <5ATEST>....................................................................................................................................................51
3.4.5.1 DATA........................................................................................................................................................51
3.4.5.2 FILE..........................................................................................................................................................52
3.5 [SPECIAL] .............................................................................................................................................54
3.5.1 <1AUTOZ>...................................................................................................................................................55
3.5.1.1 EDIT AUTOZ............................................................................................................................................58
3.5.2 <2REMOTE>................................................................................................................................................58
3.5.2.1 <1COM1, 2COM2> ..................................................................................................................................59
3.5.2.2 <3IEEE-488>............................................................................................................................................59
3.5.2.3 <4FORMAT>............................................................................................................................................59
3.5.2.4 <5RS232 SELF-TEST>............................................................................................................................59
3.5.3 <3HEAD>.....................................................................................................................................................60
3.5.4 <4SDS>........................................................................................................................................................60
3.5.5 <5PREFS> ...................................................................................................................................................60
3.5.5.1 <1SCRSVR> ............................................................................................................................................61
3.5.5.2 <2SOUND> ..............................................................................................................................................61
3.5.5.3 <3TIME>...................................................................................................................................................62
3.5.5.4 <4ID>........................................................................................................................................................62
3.5.5.5 <5LEVEL> (SECURITY) ..........................................................................................................................63
3.5.6 <6PUNIT>.....................................................................................................................................................65
3.5.7 <7INTERNAL>.............................................................................................................................................66
3.5.7.1 <1BARO>.................................................................................................................................................67
3.5.7.2 <2READRT> ............................................................................................................................................67
3.5.7.3 <3RPT2X>................................................................................................................................................68
3.5.7.4 <4LO VNT> ..............................................................................................................................................68
3.5.7.5 <5LOG>....................................................................................................................................................68
3.5.8 <8CAL>........................................................................................................................................................69
3.5.9 <9RESET> ...................................................................................................................................................69
3.5.9.1 <1SETS>..................................................................................................................................................69
3.5.9.2 <2 UNITS> ...............................................................................................................................................70
3.5.9.3 <3ATEST>................................................................................................................................................70
3.5.9.4 <4 CAL> ...................................................................................................................................................71
3.5.9.5 <5 ALL>....................................................................................................................................................71
TABLE OF CONTENTS
Page III © 2007 DH Instruments, a Fluke Company
4. REMOTE OPERATION ....................................................... 73
4.1 OVERVIEW............................................................................................................................................73
4.2 INTERFACING.......................................................................................................................................73
4.2.1 RS232 INTERFACE.....................................................................................................................................73
4.2.1.1 COM1.......................................................................................................................................................73
4.2.1.2 IEEE-488..................................................................................................................................................74
4.2.1.3 COM2.......................................................................................................................................................74
4.3 PROGRAMMING FORMATS.................................................................................................................74
4.3.1 CLASSIC PROGRAM MESSAGE FORMAT ..............................................................................................75
4.3.2 ENHANCED PROGRAM MESSAGE FORMAT..........................................................................................75
4.3.2.1 USING COMMAND TYPE COMMANDS .................................................................................................75
4.3.2.2 USI NG Q U E R Y T Y P E C O M M A N D S...................................................................................................76
4.4 COMMANDS..........................................................................................................................................77
4.4.1 PROGRAMMING MESSAGES....................................................................................................................77
4.4.2 ERROR MESSAGESS.................................................................................................................................78
4.4.3 PROGRAM MESSAGE DESCRIPTION OVERVIEW..................................................................................79
4.4.4 PROGRAM MESSAGE DESCRIPTIONS....................................................................................................80
4.5 STATUS REPORTING SYSTEM...........................................................................................................97
4.5.1 ERROR QUEUE...........................................................................................................................................97
4.5.2 STATUS BYTE REGISTER.........................................................................................................................98
4.5.3 STANDARD EVENT REGISTER.................................................................................................................99
4.5.4 READY STATUS REGISTER....................................................................................................................100
4.6 IEEE STD. 488.2 COMMON AND STATUS PROGRAM MESSAGES ...............................................101
4.6.1 PROGRAM MESSAGE DESCRIPTIONS..................................................................................................101
5. MAINTENANCE, ADJUSTMENTS AND CALIBRATION ..............105
5.1 OVERVIEW..........................................................................................................................................105
5.2 RPM4 MAINTENANCE........................................................................................................................105
5.2.1 AUTOZERO OF Q-RPTS ...........................................................................................................................105
5.2.1.1 GAUGE MODE AUTOZERO..................................................................................................................105
5.2.1.2 ABSOLUTE MODE AUTOZERO ...........................................................................................................106
5.2.2 ADJUSTMENT OF THE ON-BOARD BAROMETER................................................................................106
5.3 RPM4 Q-RPT CALIBRATION..............................................................................................................107
5.3.1 PRINCIPLE ................................................................................................................................................107
5.3.1.1 PA AND PM COEFFICIENTS ................................................................................................................107
5.3.1.2 AS RECEIVED AND AS LEFT DATA ....................................................................................................108
5.3.2 EQUIPMENT REQUIRED..........................................................................................................................108
5.3.3 SET-UP AND PREPARATION ..................................................................................................................109
5.3.4 RECOMMENDED CALIBRATION POINT SEQUENCE ...........................................................................110
5.3.5 TURNING OFF ABSOLUTE MODE CAPABILITY FOR A Q-RPT ...........................................................110
5.3.6 Q-RPT CALIBRATION USING CALTOOL FOR Q-RPTS SOFTWARE...................................................111
5.3.7 EDITING AND VIEWING Q-RPT CALIBRATION INFORMATION...........................................................111
5.3.8 Q-RPT ADJUSTMENT WITHOUT CALTOOL FOR Q-RPTS SOFTWARE..............................................112
5.4 RPM4 REPAIR.....................................................................................................................................114
5.4.1 REMOVING RPM4 FROM HPMS..............................................................................................................114
5.4.2 OPENING AND CLOSING THE RPM4 ENCLOSURE..............................................................................115
5.4.3 RELOADING EMBEDDED SOFTWARE INTO FLASH MEMORY...........................................................115
5.4.4 SUBASSEMBLY DESCRIPTION AND LOCATION..................................................................................116
5.4.4.1 MICRO BOARD......................................................................................................................................116
5.4.4.2 POWER SUPPLY MODULE ..................................................................................................................117
5.4.4.3 DRIVER BOARD....................................................................................................................................117
5.4.4.4 ON-BOARD BAROMETER ....................................................................................................................117
5.4.4.5 Q-RPT MODULE....................................................................................................................................117
5.4.4.6 DISPLAY ................................................................................................................................................117
5.4.4.7 COOLING FAN.......................................................................................................................................118
5.4.5 Q-RPT MODULE PNEUMATIC SCHEMATIC...........................................................................................118
5.5 RPM4 ILLUSTRATED PARTS BREAKDOWN ...................................................................................118
5.6 HPMS MAINTENANCE........................................................................................................................124
5.6.1 HPMS OVERHAUL....................................................................................................................................124
5.7 HPMS ILLUSTRATED PARTS BREAKDOWN...................................................................................125
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page IV
6. TROUBLESHOOTING .......................................................129
7. APPENDIX......................................................................133
7.1 UNIT CONVERSION............................................................................................................................133
7.1.1 PRESSURE................................................................................................................................................133
8. WARRANTY ....................................................................135
8.1 OVERVIEW..........................................................................................................................................135
9. GLOSSARY .....................................................................137
TABLES & FIGURES
Page V © 2007 DH Instruments, a Fluke Company
T
T
A
A
B
B
L
L
E
E
S
S
Table 1. RPM4/HPMS A70M/A20M-AF Parts List.......................................................................................6
Table 2. Settings and what they are specific to (range, measurement mode, Q-RPT, system)................20
Table 3. Summary of RPM4 function key operation..................................................................................24
Table 4. Settings made by AutoRange......................................................................................................28
Table 5. AutoZ ON and OFF......................................................................................................................56
Table 6. Security levels.............................................................................................................................. 64
Table 7. UNIT function - available units of measure..................................................................................66
Table 8. READRT - display update rates...................................................................................................68
Table 9. Reset – Sets.................................................................................................................................70
Table 10. Reset – Cal ................................................................................................................................71
Table 11. Reset – All..................................................................................................................................71
Table 12. COM1 pin designations and connections..................................................................................73
Table 13. COM2 DB-9F pin designations..................................................................................................74
Table 14. Program message list ................................................................................................................77
Table 15. Error #s and descriptions...........................................................................................................78
Table 16. 8 Bit status byte register ............................................................................................................98
Table 17. 8 bit standard event register ......................................................................................................99
Table 18. 8 bit ready status register.........................................................................................................100
Table 19. Program message list ..............................................................................................................101
Table 20. Calibration point sequence for A20M and A70M Q-RPTs.......................................................110
Table 21. RPM4 Front Panel Illustrated Parts Breakdown (see Figure 15)............................................118
Table 22. RPM4 Rear Panel Illustrated Parts Breakdown (see Figure 16) ............................................119
Table 23. RPM4 Illustrated Parts Breakdown of Display Assembly (see Figure 17).............................120
Table 24. RPM4 Illustrated Parts Breakdown of Internal Assembly (see Figure 18) ............................121
Table 25. RPM4 Illustrated Parts Breakdown of Internal Assembly (see Figure 19) ............................122
Table 26. RPM4 Illustrated Parts Breakdown of Electronic Chassis (see Figure 20) ...........................123
Table 27. HPMS Assembly Illustrated Parts Breakdown (see Figure 21 and 22)..................................125
Table 28. Troubleshooting guide .............................................................................................................129
Table 29. Pressure unit of measure conversion coefficients ...................................................................133
Table 30. DHI Authorized Service Providers ...........................................................................................135
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page VI
F
F
I
I
G
G
U
U
R
R
E
E
S
S
Figure 1. Typical PGC-10000-AF installation layout....................................................................................7
Figure 2. RPM4/HPMS front view................................................................................................................8
Figure 3. RPM4/HPMS rear view.................................................................................................................9
Figure 4. RPM4/HPMS side view...............................................................................................................10
Figure 5. RPM4 front panel........................................................................................................................10
Figure 6. RPM4 rear panel......................................................................................................................... 11
Figure 7. MAIN RUN screen display fields.................................................................................................16
Figure 8. Keypad layout.............................................................................................................................17
Figure 9. RPM4/HPMS front view..............................................................................................................22
Figure 10. HPMS pneumatic schematic.....................................................................................................23
Figure 11. Status register schematic .........................................................................................................98
Figure 12. RPM4/HPMS disassembly view .............................................................................................115
Figure 13. RPM4 internal view.................................................................................................................116
Figure 14. Pneumatic schematic of RPM4 Q-RPT Module ......................................................................118
Figure 15. RPM4 Illustrated Parts Breakdown of Front Panel..................................................................118
Figure 16. RPM4 Illustrated Parts Breakdown of Rear Panel...................................................................119
Figure 17. RPM4 Illustrated Parts Breakdown of Display Assembly........................................................120
Figure 18. RPM4 Illustrated Parts Breakdown of Internal Assembly........................................................121
Figure 19. RPM4 Illustrated Parts Breakdown of Internal Assembly........................................................122
Figure 20. RPM4 Illustrated Parts Breakdown of Electronic Chassis.......................................................123
Figure 21. HPMS Schematic.....................................................................................................................126
Figure 22. RPM4/HPMS-AF Assembly.....................................................................................................127

ABOUT THIS MANUAL

Page VII © 2007 DH Instruments, a Fluke Company
A
A
B
B
O
O
U
U
T
T
T
T
H
H
I
I
S
S
M
M
A
A
N
N
U
U
A
A
L
L
This manual is intended to provide the user with the basic information necessary to operate an
RPM4/HPMS A70M/A20M reference pressure monitor with high pressure mounting system. It also
includes a great deal of additional information provided to allow you to optimize the use of the instrument
and take full advantage of its many features and functions.
Before using the manual, take a moment to familiarize yourself with the Table of Contents structure:
Sections 1, 2 and 3 should be read by all first time RPM4 users. Section 3 is most important for those
using the local front panel interface but should be read over by all users to familiarize themselves with
general RPM4 operating principles. Section 4 is for remote operation from an external computer. Section
5 provides maintenance and calibration information. Section 6 is a quick troubleshooting guide. Use it to
troubleshoot unexpected RPM4 behavior based on the symptom of that behavior. Certain words and
expressions have specific meaning as they pertain to RPM4. The Glossary, Section 9, is useful as a
quick reference for exact definition of specific words and expressions as they are used in the manual.
For those of you who “don’t read manuals”, go directly to Section 2.3 to set up your RPM4/HPMS and
then go to Section 2.4 for power-up and verification. This will get you up and running quickly with a minimal risk
of causing damage to yourself or your new instrument. THEN… when you have questions or start to wonder
about all the great features you might be missing, get into the manual!
RPM4/HPMS A70M/A20M-AF is usually delivered as part of an PGC-10000-AF system which includes a
PGC1-10000-AF pneumatic pressure controller and a GB-152-AF gas booster. The PGC1 and the GB-152 have
their own Operation and Maintenance Manuals.
Manual Conventions
(CAUTION) is used in throughout the manual to identify user warnings and cautions.
(NOTE) is used throughout the manual to identify operating and applications advice and additional
explanations.
[ ] indicates direct function keys (e.g., [RANGE]).
< > indicates RPM4 screen displays (e.g., <1yes>).
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page VIII
N
N
O
O
T
T
E
E
S
S

1. INTRODUCTION

Page 1 © 2007 DH Instruments, a Fluke Company
1
1
.
.
I
I
N
N
T
T
R
R
O
O
D
D
U
U
C
C
T
T
I
I
O
O
N
N

1.1 PRODUCT OVERVIEW

RPM4/HPMS A70M/A20M-AF is the combination of an RPM4 A70M/A20M-AF reference pressure
monitor and an HPMS High Pressure Mounting System.
RPM4 A70M/A20M-AF is a stand-alone, microprocessor driven, reference pressure monitor intended to
accurately measure gas pressure in a variety of pressure calibration, measurement and testing
applications. It has been designed to provide very high performance and extensive features combined
with maximum versatility, ease of use and durability. RPM4 A70M/A20M-AF covers the range from 0 to
10 000 psi gauge and atmosphere to 10 000 psi absolute using two high accuracy quartz reference
pressure transducers (Q-RPTs) and an on-board barometer to measu re p ressure.
RPM4 A70M/A20M-AF is controlled locally by the operator using its front panel display, keypad and foot
pedal or remotely by a computer using ASCII character command strings over its RS-232 and IEEE-488
interfaces.
RPM4 A70M/A20M-AF uses an AutoRange feature to automatically select the most appropriate Q-RPT
and to optimize the RPM4 setup to cover the range.
The HPMS mounts the RPM4 at a convenient viewing angle and contains the hardware to isolate the
RPM4’s low pressure Q-RPT (A20M (3 000 psi)) when the high pressure Q-RPT (A70M (10 000 psi) ) is
in use.
RPM4/HPMS A70M/A20M-AF is typically delivered as part of a PGC-10000-AF Pneumatic Gauge
Calibrator. The PGC-10000-AF system includes a GPC1-10000-AF pneumatic pressure controller and a
GB-152-AF gas booster that have their own Operation and Maintenance Manuals.
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 2

1.2 SPECIFICATIONS

1.2.1 GENERAL SPECIFICATIONS

Power Requirements: 85 to 264 VAC, 50/60 Hz, 25 VA max consumption
and 12VDC, 1.2 A
Operating Temperature Range: 18 to 28 °C
Storage Temperature Range: - 20 to 70 °C
Weight: 11 kg (22 lb) approx.
Dimensions: 23.5 cm H x 29.4 cm W x 37.5 cm D (9.3 in. x 11.6 in. x 14.8 in.)
Communication Ports
Fuses:
RS232 (COM1, COM2), IEEE-488.2
1 A, 250 VAC fuse, 5 x 20 mm, time lag type fuse
Internal power supply fuse not replaceable by operator: 2.5A, 250 VAC
Pressure Range: 0 to 10 000 psi (70 MPa) in gauge mode
Atmosphere to 10 000 psi (70 MPa) in absolute mode
Operating Medium: Any clean, dry, non-corrosive gas
Pressure Connections: DH500 female
DH500 is a gland and collar type fitting for 6mm (1/4 in.) coned and left
hand threaded tubes equivalent to AE F250C, HIP HF4, etc.
Pressure Limits: Maximum Working Pressure: 10 000 psi (70 MPa)
Maximum Pressure Without Damage: 12 000 psi (83 MPa)
When low Q-RPT is connected to pressure:
Maximum Working Pressure: 3 000 psi (20 MPa)
Maximum Pressure Without Damage: 3 600 psi (24 MPa)
PGC-10000-AF SYSTEM
Temperature: Operating:
18 to 28 °C
Storage:
-20 to 70 °C
Relative Humidity: Operating: 15 to 70%RH (non-condensing)
Storage: 10 to 90%RH (non-condensing)
1. INTRODUCTION
Page 3 © 2007 DH Instruments, a Fluke Company

1.2.2 PRESSURE MEASUREMENT SPECIFICATIONS

1.2.2.1 QUARTZ REFERENCE PRESSURE TRANSDUCERS (Q-RPT)
RPM4 A70M/A20M is configured with two quartz reference pressure transducers
(Q-RPT) modules to measure pressure.
The Q-RPTs can measure absolute and gauge pressure. Gauge pressure is
defined by offsetting atmospheric pressure and applying dynamic compensation
for atmospheric changes using the on-board barometer (see Section 3.2.2).
Warm Up Time 30 minute temperature stabilization recommended from
cold power up.
Compensated Temperature Range 5 to 35 °C
Operating Temperature Range 8 to 28 °C
A20M Q-RPT A70M-QRPT
Maximum Range 3 000 psi (20 MPa)
10 000 psi (70 MPa)
Resolution
user adjustable to 1 ppm of Q-RPT maximum or 10 ppm
of active AutoRange, whichever is larger,
Precision
1
± 0.0175 % of reading, or
0.13 psi, whichever
is larger
± 0.0175 % of reading, or
0.44 psi, whichever
is larger
Predicted Stability
2
± 0.004 of reading
Measurement Uncertainty
3
± 0.02 % of reading, or
0.15 psi, whichever
is larger
± 0.02 % of reading, or
0.5 psi whichever
is larger
1. Combined linearity, hysteresis, repeatability.
2. Predicted Q-RPT measurement stability limit (k=2) over one year assuming regular use of AutoZero function. As stabi lity
can only be predicted and varies from Q-RPT to Q-RPT, stability for a specific Q-RPT should be established from
experience.
3. Maximum deviation of the Q-RPT indication from the true value of applied press ure including precision, predicted one
year stability, temperature effect and calibration uncertainty (assumes calibr ation reference uncertainty of ±0.005% of
reading), combined and expanded (k=2) following the ISO “Guide to the Expression of Uncertainty in Measurement.”.
1.2.2.2 ON-BOARD BAROMETER
The measurement uncertainty of the on-board barometer is not significant to
RPM4 Q-RPT measurement uncertainty. It is used only to measure small, short
term changes in atmospheric pressure to provide dynamic compensation of the
Q-RPT’s atmospheric pressure offset when in gauge pressure measurement
mode (see Section 3.2.2)
Sensor Technology: Micro-machined silicon
Warm Up Time: None required
Resolution: 0.1 Pa (0.000015 psi)
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 4
N
N
O
O
T
T
E
E
S
S

2. INSTALLATION

Page 5 © 2007 DH Instruments, a Fluke Company
2
2
.
.
I
I
N
N
S
S
T
T
A
A
L
L
L
L
A
A
T
T
I
I
O
O
N
N

2.1 UNPACKING AND INSPECTION

RPM4/HPMS A70M/A20M-AF is usually delivered as part of an PGC-10000-AF system which includes a
GPC1-10000-AF gas pressure controller and a GB-152-AF gas booster.

2.1.1 REMOVING FROM PACKAGING

RPM4/HPMS A70M/A20M-AF is delivered, along with its accessories, in a reusable molded
plastic, shipping container with polyurethane inserts to hold it in place.
Remove the RPM4/HPMS A70M/A20M-AF and its accessories from the shipping container
and remove each element from its protective plastic bag.
Retain the shipping container for repacking the RPM4/HPMS A70M/A20M-AF when it is
shipped for recalibration or repair.
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 6

2.1.2 INSPECTING CONTENTS

Check that all items are present and have no visible damage. If damage is noted, report it to
your Receiving Department for appropriate action.
A new RPM4/HPMS A70M/A20M-AF includes all items listed in Table 1.
Table 1. RPM4/HPMS A70M/A20M-AF Parts List
DESCRIPTION PART NO.
RPM4/HPMS A70M/A20M-AF Reference Pressure
Monitor/High Pressure Mounting System
402192
ACCESSORIES:
1 ea. Transport case (with inserts) (used for original
shipment)
124198
1 ea. Foot switch assembly 401613
1 ea. PGC-10000-AF Documentation Disk including:
RPM4/HPMS A70M/A20M-AF Operation and
Maintenance Manual, p/n 550136
GPC1-10000-AF Operation and Maintenance
Manual, p/n 550135
GB-152-AF Operation and Maintenance Manual,
p/n 550137
402189
1 ea. Calibration Report 550100
1 ea. Test Report (PGC-10000-AF) (if the RPM4/HPMS is
delivered as part of an PGC-10000-AF system)
550138
1 ea. Power cord (7.5 ft) 100770
1 ea. General Accessories Disk (white CD) (Important :
Includes system support software and
documentation)
102987

2.2 PGC-10000-AF SYSTEM

RPM4/HPMS A70M/A20M-AF is usually delivered as the reference pressure measurement component of
a PGC-10000-AF Pneumatic Gauge Calibrator. The PGC-10000-AF system includes:
RPM4/HPMS A70M/A20M-AF: Reference pressure monitor and high pressure mounting system used
as the pressure measuring reference of the calibration system.
GPC1-10000-AF: Gas pressure controller used to set and adjust high pressure gas in the calibration
system.
GB-152-AF: Gas booster package used to supply gas pressure up to 10 000 psi (70 MPa) to the
GPC1-10000-AF pressure controller.
2. INSTALLATION
Page 7 © 2007 DH Instruments, a Fluke Company
Each of the three components of the PGC-10000-AF system has its own Operation and Maintenance
Manual and individual setup and start up instructions. Figure 1 shows the typical setup configuration of a
complete PGC-10000-AF system.
Figure 1. Typical PGC-10000-AF installation layout

2.3 SITE REQUIREMENTS

The RPM4/HPMS A70M/A20M-AF is usually delivered as part of an PGC-10000-AF pneumatic gauge
calibrator. The PGC-10000-AF also includes a GPC1-10000-AF and a GB-152-AF that each have their
own Operation and Maintenance Manual. See the GPC1 and GB-152 Operation and Maintenance
Manuals for information on their site requirements. Also see Section 2.2 for information on setup of a
complete PGC-10000-AF system.
Install RPM4 on a flat, stable surface at a convenient height. The front feet can be extended so that the
unit can be inclined for easier viewing. Consider the placement of the FOOT SWITCH which may need to
be accessed frequently while running calibrations.
Support facilities required for RPM4/HPMS A70M/A20M-AF include an electrical power source of 85 to
264 VAC, 47 to 440 Hz.
CAUTION
GB152 Pressure Generation Component
GB152 Setting
CAUTION
GPC1-10000-AF
Gas Pressure Controller
RPM4/HPMS A70M/A20M Reference Pressure Monitor
GB152-AF Gas
Booster
GB152-AF
Drive Air Control Kit
Remote ENTER Footswitch
CAUTION
GB152 Pressure Generation Component
GB152 Setting
CAUTION
GPC1-10000-AF
Gas Pressure Controller
RPM4/HPMS A70M/A20M Reference Pressure Monitor
GB152-AF Gas
Booster
GB152-AF
Drive Air Control Kit
Remote ENTER Footswitch
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 8

2.4 SETUP

2.4.1 PREPARING FOR OPERATION

To prepare RPM4 for check out and operation:
Remove the plastic plug from the RPM4/HPMS rear panel TEST connection.
Remove the protective plastic sheet from the front panel display.
Familiarize yourself briefly with the RPM4 and HPMS front and rear panels (see Sections
2.4.2, 2.4.3).

2.4.2 RPM4/HPMS FRONT, REAR AND SIDE VIEWS

2.4.2.1 RPM4/HPMS FRONT VIEW
1. RPM4 A70M/A2 0M-AF Reference Pressure Monitor
2. Lo Q-RPT shut-off valve position LED
3. Lo Q-RPT shut-off valve
4. Lo Q-RPT active valve position LED
5. Lo Q-RPT active caution LED
Figure 2. RPM4/HPMS front view
2. INSTALLATION
Page 9 © 2007 DH Instruments, a Fluke Company
2.4.2.2 RPM4/HPMS REAR VIEW
Figure 3. RPM4/HPMS rear view
1. Foot switch (remote [ENT])
cable connector
2. TEST port (DH500 F)
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 10
2.4.2.3 RPM4/HPMS SIDE VIEW
1. Lo Q-RPT shut off valve
2. RPM4/HPMS A70M/A20M Reference
Pressure Monitor
3. Pressure relief valve (3 300 psi)
4. Foot switch (remote [ENT]) cable connector
5. TEST port (DH500 F)
Figure 4. RPM4/HPMS side view

2.4.3 RPM4 FRONT AND REAR PANELS

2.4.3.1 RPM4 FRONT PANEL
1. Ready/Not Ready indicator
2. Display
3. Remote activity indicator
4. Cursor control keys
5. Multi-function keypad
Figure 5. RPM4 front panel
2. INSTALLATION
Page 11 © 2007 DH Instruments, a Fluke Company
2.4.3.2 RPM4 REAR PANEL
1. 12VDC Power Supply Connection
2. Accessories connector (to HPMS rear
panel FOOTSWITCH and LEDs)
3. IEEE-488 Connector
4. COM2 Connector
5. COM1 Connector
6. Power Switch
7. Fuse
8. Electrical Power Connector
(IEC-320-C13)
9. Fan
10. TEST(+) Pressure Port, Lo Q-RPT
11. TEST(+) Pressure Port, Hi Q-RPT
12. ATM Pressure Port, Lo Q-RPT
13. ATM Pressure Port, Hi Q-RPT
14. Product Label (bottom of case)
Figure 6. RPM4 rear panel

2.4.4 POWER CONNECTION

Connect the supplied power cable to the RPM4 rear panel power module.
Connect the other end of the power cable to an electrical supply of 85 to 264 VAC,
50/60 Hz.

2.4.5 FOOTSWITCH CONNECTION

Connect the foot switch supplied in the RPM4/HPMS accessories to the HPMS rear panel
electrical connection labeled FOOT SWITCH. Place the foot switch on the floor at a convenient
location (see Section 2.2, Figure 1). The FOOT SWITCH function is equivalent to the RPM4 front
panel [ENT] key and may be used frequently while running tests and calibrations.

2.4.6 TEST PORT CONNECTION

A single high pressure TEST port is provided on the rear panel of the HPMS.
The test port connection is a DH500 F. DH500 is a gland and collar type fitting for 1/4 in.
(6 mm) coned and left hand threaded tube. DH500 is equivalent to AE F250C, HIP HF4, etc.
Connection to GPC1 if the RPM4/HPMS is Part of an PGC-10000-AF System
If the RPM4/HPMS was delivered as part of a PGC-10000-AF Pneumatic Gauge Calibrator, a
GPC1 Gas Pressure Controller was delivered with it. The GPC1 includes a fittings kit with
the necessary fittings to interconnect the RPM4/HPMS and GPC1 as well as instructions on
making the connection. See the GPC1-10000-AF manual.
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 12
USE THE CORRECT PRESSURE CONNECTORS: The RPM4/HPMS TEST port fitting is a
DH500 F (see Section 1.2.1). It is NOT a 1/8 in. NPT F. Never use a fitting other than the
corresponding male fitting in these connectors. Damage to the connectors and dangerous failure
under pressure could result from using incorrect fittings.
DO NOT APPLY PRESSURE UNTIL YOU ARE FAMILIAR WITH OPERATION: The RPM4/HPMS
rear panel test port connects internally to both the RPM4’s 3 000 psi (20 MPa) and 10 000 psi
(70 MPa) Q-RPTs. The valve on the front of the HPMS isolates the low pressure Q-RPT when the
high pressure Q-RPT is in use. Do not apply pressure to the RPM4/HPMS until you are familiar
with its operation and know how to protect the low pressure Q-RPT from overpressure (see
Section 3.2.5). FAILURE TO PROTECT THE LOW PRESSURE Q-RPT FROM OVERPRESSURE MAY
DESTROY IT. DAMAGE DUE TO Q-RPT OVERPRESSURE IS NOT COVERED BY THE PRODUCT
WARRANTY.
2.4.6.1 THE ATM PORTS OF RPM4
The ATM ports on the RPM4 Q-RPT modules are connected to the RPM4’s
internal barometer to assure that the RPM4 gauge pressure measurements are
relative to ambient pressure. These ports should always be left completely
unobstructed and open to atmosphere.
NEVER plug, obstruct or connect a supply pressure to the RPM4 Q-RPT module
ATM ports. This may adversely affect GAUGE mode operation and AutoZeroing
functions.

2.4.7 CHECK/SET SECURITY LEVEL

RPM4 has a security system based on user levels. By default, the security system is set to
“low”, which includes access restriction to internal calibration coefficients, and there is no
password required to change the security level. See Section 3.5.5.5 for information on the
security level system. As part of the RPM4 startup, determine the security level that is
appropriate for the RPM4 and set a password if desired.
RPM4 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 password protection be implemented if control
over setting of security levels is desired.

2.4.8 SETTING UP AUTOTEST FILES

RPM4 supports automated test/calibration sequences. AutoTest sequence
parameters for testing specific DUTs can be stored in File AutoTest files and
recalled to run a test. Consider setting up File AutoTest files for frequently tested
DUTs as part of the RPM4 set up process (see Section 3.3.10, 3.4.5.2).
2. INSTALLATION
Page 13 © 2007 DH Instruments, a Fluke Company

2.5 POWER-UP AND VERIFICATION

2.5.1 SWITCH POWER ON

Actuate the power switch on the RPM4 rear panel. Observe the front panel display as RPM4
initializes, error checks and goes to the MAIN RUN screen (see Section 3.1.1). If the RPM4
fails to reach the main run screen, service is required. Record the sequence of operations
and displays observed and contact a DHI Authorized Service Provider (see Section 8,
Table 23).
Check that one of the two green Valve Status LEDs on the front panel of the HPMS is lit (the
red LED should NOT be ON). If neither of the green LEDs on the HPMS front panel lights,
check that the 12 pin circular connector at the rear of the RPM4 itself is properly connected to
the ACC. J1 connector.

2.5.2 CHECK PRESSURE MEASUREMENT OPERATION

2.5.2.1 CHECKING ABSOLUTE MODE PRESSURE MEASUREMENT
Let the RPM4 warm up with power ON for approximately 30 minutes.
Press [MODE] on the RPM4 and select absolute. If desired, change the
pressure unit of measure using [UNIT] (see Section 3.3.2).
Open the RPM4/HPMS TEST port to atmosphere. Put the valve knob in the
HPMS front panel into the Lo Q-RPT Active position. This opens the Lo and Hi
Q-RPTs to the HPMS TEST port.
Use [RANGE] (see Section 3.3.1) to select the Lo Q-RPT. Observe the RPM4
indicated pressure. Check that the agreement of the RPM4 indicated value with
a calibrated barometer in the same room is ± 0.15 psi. The calibrated barometer
must have a measurement uncertainty of ± 0.25% of better.
Use [RANGE] to select the Hi Q-RPT Check that the agreement of the RPM4
indicated value with a calibrated barometer in the same room is ± 0.5 psi.
If a Q-RPT does not agree within tolerance, it may need to be AutoZeroed (see
Section 3.3.9), calibrated (see Section 5.3) or repaired.
2.5.2.2 CHECKING GAUGE MODE PRESSURE MEASUREMENT
Let the RPM4 warm up with power ON for at approximately 30 minutes.
Open the RPM4/HPMS TEST port to atmosphere. Put the valve knob in the
HPMS front panel into the Lo Q-RPT Active position. This opens the Lo and Hi
Q-RPTs to the HPMS TEST port.
Use [RANGE] (see Section 3.3.1) to select the Lo Q-RPT. Press [MODE] on the
RPM4 and select gauge. If desired, change the pressure unit of measure using
[UNIT] (see Section 3.3.3).
The value indicated should be near zero. Press [AutoZ]. This runs AutoZ to
zero the Q-RPT reading (see Section 3.3.9.1). Upon return to the main run
screen, observe that the indication of measured pressure has zeroed.
Use [RANGE] to select the Hi Q-RPT and repeat the zeroing process.
If the display fails to zero properly for either Q-RPT, RPM4 may need repair.
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 14
It is normal for RPM4 to indicate a value other than zero when vented when
gauge mode is first entered or ranges are changed, especially if AutoZ is OFF, RPM4
has been OFF for some time or its location has changed.

2.6 SHORT TERM STORAGE

The following is recommended for short term storage of RPM4/HPMS:
Vent the RPM4/HPMS TEST port.
Switch the RPM4 power OFF.
2.7 LONG TERM STORAGE AND/OR PREPARATION FOR
SHIPPING
The following is recommended for long term storage and or shipping of RPM4/HPMS:
Plug the HPMS TEST port.
Place the RPM4/HPMS in a plastic bag.
Place the RPM4/HPMS in the custom shipping/storage case in which it was delivered.

3. OPERATION

Page 15 © 2007 DH Instruments, a Fluke Company
3
3
.
.
O
O
P
P
E
E
R
R
A
A
T
T
I
I
O
O
N
N

3.1 USER INTERFACE

RPM4/HPMS is designed to offer the optimum balance between simple, straight forward operation and
the availability of a wide variety of functions with a high level of operator discretion if desired.
The local operator interface is through the RPM4 front panel 2 x 20 character alpha-numeric display, a
function/data keypad, a cursor control pad, an [ENTER] footswitch and a Ready/Not Ready indicator.
Remote communications are also available via RS-232 or IEEE-488 interfaces (see Section 4).
The HPMS mounts the RPM4 at a convenient viewing angle and includes a valve and visual indicators to
isolate and protect the RPM4’s 3 000 psi Q-RPT (A20M) when using the 10 000 psi Q-RPT (A70M) (see
Section 3.2.5).

3.1.1 MAIN RUN SCREEN

The RPM4 MAIN RUN screen is its home display that is reached on power-up and from which
other functions and menus are accessed. It is the very top level of all menu st ructures.
The MAIN RUN screen is where RPM4 is left in normal operation. It displays the current
measured pressure as well as a variety of additional information if desired.
Figure 7 and its legend summarize the RPM4 MAIN RUN screen fields and their function s.
RPM4 has a screen saver function which 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 time can be
changed or screen saving can be completely suppressed (see Section 3.5.5.1).
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 16
PRESSURE1UNITM hzRR
DDISPLAYFUCNIONnn/nn
DISPLAY FIELD NAME PURPOSE CONTENTS SECTION
1. PRESSURE1 Measured
pressure
Displays pressure
measured by the
active Q-RPT
Numerical pressure value and
sign.
1.2.2.1,
3.3.1
2. UNIT Unit of
measure
Identifies unit of
measure in which
pressure values are
displayed
Pressure unit symbol 3.3.2
3. M Measurement
mode
Identifies
measurement mode
of displayed pressure
<a> absolute
<g> gauge
3.3.3
4. h Head
pressure
indicator
Indicates whether a
fluid head correction
is applied to
PRESSURE1
<h> the fluid head is not
zero
<blank> fluid head is zero
3.3.7
5. z AutoZero
indicator
Indicates whether
the AutoZero function
is ON or OFF for the
active Q-RPT and
measurement mode
<z> AutoZ is ON
<blank> AutoZ is OFF
3.5.1,
3.3.9
6. RR Active
Q-RPT
position
indicator
Indicates the position
of the active Q-RPT in
the RPM4
<Hi> Internal Hi
<Lo> Internal Lo
3.2.3
7. nn/nn Sequence
progress
indicator
Indicates progress of
an ATest sequence,
during test execution
<nn/nn> Number of this point
over total number of points
in the sequence
3.3.10
8. DISPLAY
FUNCTION
Information
specific to
the DISPLAY
mode
Pressure indication
depending on current
RPM4 DISPLAY
function. Leading
character identifies
the value
Numerical pressure value
and sign.
3.3.6
9. D Pressure
information
indicator
Pressure information
indicator depending
on current RPM4
DISPLAY function.
<σ> Display mode is
AVERAGE and value is
standard deviation
<R> Display mode is RATE
and value is pressure rate
of change per second
<H> Display mode is HI/LO and
value is high, then low
<D> Display mode is
DEVIATION and value is
difference from current target
<),
, > Display mode is Q-
RPT and value is
measurement of inactive
Q-RPT
<F> Display mode is FREEZE
and value is last captured
reading
Blank, no character Current
display mode is CLEAN
3.3.6
Figure 7. MAIN RUN screen display fields
3. OPERATION
Page 17 © 2007 DH Instruments, a Fluke Company

3.1.2 FUNCTION / DATA KEYPAD LAYOUT AND PROTOCOL

The RPM4 has a function/data keypad for local operator access to direct
functions, function menus and for data entry.
1. The Function/Data keys allow very
commonly used functions to be accessed
directly by a single keystroke when pressed
from the MAIN RUN screen (see Section
3.1.1).
The name of the function is on the bottom
half of the key. These keys enter numerical
values when editing.
2. The Editing and Execution keys are for
starting and suspending command
execution, cursor control in menus and
editing entries.
3. The Menu/Data keys provide access to
function menus when pressed 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
(see Section 3.4). The SPECIAL menu is
for functions that are not generally used as
a part of day to day operation (see Section
3.5). These keys enter numerical values
when editing.
Figure 8. Keypad layout
Pressing the [ENT] key generally causes execution or forward movement in the
menu tree.
Pressing the [ESC] key moves back in the menu tree and/or causes execution to
cease or suspend. Pressing [ESC] repeatedly eventually returns to the MAIN RUN
screen and, from there, allows momentary viewing of the RPM4 introduction screen.
Pressing the [+/-] key changes a numerical sign when editing. It also toggles
through multiple screens when available and, from some run screens, is a
shortcut to a momentary display of active RANGE.
Pressing the [
], [ ], [ ] and [ ] keys allows up, down, reverse and
forward cursor movement when editing data entry or moving in menus.
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 the cursor
control keys 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.
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 18

3.1.3 REMOTE [ENT] (ENTER) FOOTSWITCH

Operating the footswitch is the equivalent of pressing [ENT] on the front panel.
The remote ENTER feature can be particularly convenient when running AutoTests (see
Section 3.3.10) in which the operator’s hands are not free or attention is on the device under
test rather than the RPM4.

3.1.4 SOUNDS

RPM4 is equipped with a variable frequency tone device to provide audible feedback and
alarms. The beeper is used for the following indications.
Valid key press
Brief beep. Choice between three frequencies or NO
sound is available (see Section 3.5.5.2).
Invalid key press
Descending two tone “blurp”.
Change HPMS Lo Q-RPT
shut-off valve setting
Four one second beeps (see Section 3.2.5, 3.3.1).
Leak check completed
Three two second beeps (see Section 3.3.5).
Upper or lower limit exceeded
Intermittent one second beeps (see Section 3. 4.4).
Pmax! (overpressure limit)
exceeded
Eight second high frequency beep (see Section 3.4.4.1).
Hi Q-RPT is selected but Lo
Q-RPT is being pressurized
Intermittent two second high frequency beep. The audible
alarm is combined with flashing of the red, Lo Q-RPT
Active LED on the HPMS (see Section 3.2.5, 3.3.1).
AutoTest in/out of tolerance
reading
Ascending triad/descending triad ( see Section 3.3.10).

3.2 GENERAL OPERATING PRINCIPLES

3.2.1 PRESSURE READY/NOT READY

There is a Ready/Not Ready indicator LED on the RPM4 front panel. It is intended to provide
the user with a clear and objective indication of when a stable pressure has been achieved.
Ready is indicated when the current stability (rate of change) of pressure is less than the
stability limit. The user can set the stability limit (see Section 3.4.3) and the stability limit can
be set automatically by a AutoRange or AutoTest (see Section 3.3.4, 3.3.10). The Ready
indication is often used when comparing the RPM4 and a test device to indicate when a valid
reading can be made.
The Ready/Not Ready LED indications are:
<Green > Pressure Ready The pressure stability is within the stability limit.
<Red> Pressure Not Ready The pressure stability is NOT within the stability limit.
3. OPERATION
Page 19 © 2007 DH Instruments, a Fluke Company
3.2.2 GAUGE MODE, DYNAMIC COMPENSATION FOR
ATMOSPHERIC PRESSURE
The RPM4 A70M/A20M-AF Q-RPTs are intrinsically absolute but they are also used for gauge
measurement mode (see Section 3.3.3, PR INCIPLE ). Gauge measurement mode is achieved by
subtracting the value of atmospheric pressure, P
offset,G
, from the Q-RPT’s absolute reading
using AutoZ (see Section 3.2.2). The AutoZ routine that measures P
offset,G
, is run by pressing
[AutoZ] whenever RPM4 is in the vented condition. This assures the continuous updating of the
P
offset,G
value corresponding to atmospheric pressure. Gauge pr e s s u r e is the mea sur ed ab solut e
pressure, P
u
, minus the atmospheric offset, P
offset,G
.
P
gauge
= P
u
- P
offset,G
However, atmospheric pressure may change between opportunities to run AutoZ and update
the value of P
offset,G
, for example when running an extended test without venting. RPM4 uses
dynamic compensation for atmospheric pressure to correct for changes in atmospheric
pressure between opportunities to run AutoZ and update P
offset,G
. When AutoZ runs, and
P
offset,G
is determined, the reading of RPM4’s on board barometer, P
atm,0
, is also recorded.
Later, when no longer vented, the change in atmospheric pressure, ΔP
atm
, since P
offset,G
was
updated, is the difference between the current barometer reading, P
atm
, and the barometer
reading at the time of AutoZ execution, P
atm,0
:
ΔP
atm
= P
atm
- P
atm,0
Dynamic compensation for atmospheric pressure uses ΔP
atm
to correct the value of P
offset,G
,
thus always compensating real time for changes in atmospheric pressure:
P
gauge
= P
u
- P
offset,G
- ΔP
atm
The additional uncertainty in gauge pressure mode due to the dynamic compensation for
atmospheric pressure technique is a function of the resolution and short term stability of the
on-board barometer, not its absolute measurement uncertainty. This additional uncertainty is
completely insignificant in the range of pressure covered by the RPM4 A70M/A20M-AF.
3.2.3 MULTIPE RANGES (Q-RPTS, AUTORANGE AND INFINITE
RANGING)
RPM4 A 7 0 M/ A2 0 M- A F has two Quartz Reference Pressure Transducers (Q-RPTs). The A70M
(10 000 psi) Q-RPT is designated the Hi Q-RTP. The A20M (3 000 psi) Q-RPT is designated
the Lo Q-RTP. Which Q-RPT is currently active is continuously by characters in the upper
right hand corner of the MAIN RUN screen and most other screens.
Each RPM4 Q-RPT has a default range which is its maximum range. Additional ranges, lower
than the Q-RPT’s maximum, may also be created using AutoRange and AutoTest (see
Sect ion 3.3.4 , 3. 3.10). Ranges created using AutoRange are temporary but may be saved with
all their settings for reactiv ation (see Se ction 3. 4.1.1).
An RPM4 range is identified by a range screen showing the Q-RPT used by the range, its current unit
of measure and its full scale pressure in gauge an d absolute measurement modes. The range
screen is:
1. Q-RPT designator.
2. Type of range. DF for the Q-RPT’s default r ange; AR for a range
created by AutoRange.
3. Q-RPT position designator.
4. Current pressure unit of measure.
5. Full scale pressure in current unit of measure in gauge (<g>) and/or
absolute (<a>) measurement mode.
Active A70M DF Hi
psi 10000g/10000a
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 20
The ranges available on the RPM4 are accessed using [RANGE] (see Section 3.3.1) and/or
created using [AutoRange] (see Section 3.3.4).
Most settings made in an RPM4 range, such as unit of measure, measurement mode, display
resolution, and stability setting are specific to the range. Settings selected while one range is
active apply to that range and not to other ranges. The range specific settings are stored with
the range and recalled whenever the range is made active. This makes setting up ranges a
convenient way to store and recall frequently used operating configurations. See Table 2 f or a li sti ng
of RPM4 adjustments and settings and whether they are range, Q-RPT or system specific.
Table 2. Settings and what they are specific to
(range, measurement mode, Q-RPT, system)
SETTING PURPOSE SPECIFIC TO SECTION
[UNIT] Set pressure unit of measure Range 3.3.2
[MODE] Set pressure measurement mode
(absolute, gauge)
Range 3.3.3
[DISPLAY] Set bottom line display function System 3.3.6
[HEAD] Set fluid head correction height, fluid, unit
of measure
System 3.3.7
[AutoZ] Run AutoZ Q-RPT and measurement mode 3.3.9
Resolution Set pressure display resolution Range 3.4.2
Stability Set Ready/Not Ready stability test. Range 3.4.3
Upper Limit (UL) Set upper limit alarm Range and measurement mode 3.4.4
AutoZ AutoZ, ON/OFF, set and view values Q-RPT and measurement mode 3.5.1
Screen Saver,
Sound, Time,
ID, Level
Set system user preferences System 3.5.5
Cal Various Q-RPT and barometer calibration
functions, including turning off absolute and
negative gauge modes
Q-RPT or barometer 3.5.8

3.2.4 AUTOMATED TEST AND CALIBRATION SEQUENCES

The RPM4 AutoTest function supports “Quick” and “File” automated calibration sequences.
These automatically AutoRange the RPM4, setting its resolution, stability limit and upper limit
based on the characteristics of the device under test. They also prompt the user through the
increments of the calibration sequence and log calibration data. The AutoTest function
should be used for most common calibration tasks, especially calibration of analo g pressure
gauges (see Section 3.3.10).

3.2.5 HPMS (HIGH PRESSURE MOUNTING SYSTEM)

The HPMS (high pressure mounting system) holds the RPM4 at a convenient viewing angle
and includes a valve and visual indicators to isolate and protect the RPM4’s 2 000 psi (A20M)
Q-RPT when using the 10 000 psi (A70M) Q-RPT.
See Figure 10 for an HPMS schematic.
OPERATION
Numerical references in this Section refer to Figure 9.
In normal use, the operator’s only interaction with the HPMS is to operate the isolation valve
knob to connect and disconnect the Lo Q-RPT from the TEST port. The valve’s operation is
prompted by the Valve Position LEDs (2, 4).
Loading...
+ 115 hidden pages