Fluke 744 Operating Manual

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744

Documenting Process Calibrator

Users Manual

PN 691287 September 1998 Rev.1, 2/99

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LIMITED WARRANTY & LIMITATION OF LIABILITY

Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years and begins on the date of shipment. Parts, product repairs and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in Fluke’s opinion, has been misused, altered, neglected or damaged by accident or abnormal conditions of operation or handling. Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke does not warrant that software will be error free or operate without interruption.

Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price. Fluke reserves the right to invoice Buyer for importation costs of repair/replacement parts when product purchased in one country is submitted for repair in another country.

Fluke’s warranty obligation is limited, at Fluke’s option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period.

To obtain warranty service, contact your nearest Fluke authorized service center or send the product, with a description of the difficulty, postage and insurance prepaid (FOB Destination), to the nearest Fluke authorized service center. Fluke assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke determines that the failure was caused by misuse, alteration, accident or abnormal condition of operation or handling, Fluke will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping Point).

THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABIL ITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABL E FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR L O SSES, INCLUDING LOSS OF DATA, WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY OTHER THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.

Fluke Corporation Fluke Europe B.V. P.O. Box 9090 P.O. Box 1186 Everett WA 98206-9090 5602 B.D. U.S.A Eindhoven, The Netherlands

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Title Page

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

Standard Equipment...................................................................................................... 3

Safety Information......................................................................................................... 7

Getting Started Exercise ............................................................................................... 10

Operating Features ....................................................................................................... 12

Input and Output Jacks............................................................................................. 12

Keys ........................................................................................................................ 14

Display...................................................................................................................... 17

Setting Up the Calibrator............................................................................................... 19

Using the Strap and Bail........................................................................................... 19

Charging the Battery................................................................................................. 20

Battery Life ............................................................................................................... 22

Preserving Battery Life............................................................................................. 23

Using the Optional Battery Eliminator....................................................................... 23

Selecting the Display Language............................................................................... 24

Adjusting the Display Contrast.................................................................................. 24

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Users Manual

Displaying the Date and Time................................................................................... 24

Using the Backlight ................................................................................................... 26

Personalizing the Calibrator...................................................................................... 26

Using Measure Mode..................................................................................................... 28

Measurement Ranges............................................................................................... 28

Measuring Electrical Parameters.............................................................................. 28

Testing Continuity..................................................................................................... 30

Measuring Pressure.................................................................................................. 30

Measuring Temperature............................................................................................ 34

Using Thermocouples .......................................................................................... 34

Using Resistance-Temperature Detectors (RTDs)............................................... 37

Measurement Scale.................................................................................................. 41

Linear-Output Transmitters .................................................................................. 41

Square-Law Process Variables............................................................................ 42

Measuring or Sourcing with Custom Units................................................................ 43

Using the 700-IV Current Shunt................................................................................ 44

Damping Your Measurements................................................................................... 44

Using Source Mode ....................................................................................................... 46

Sourcing Electrical Parameters................................................................................. 46

Simulating a 4 to 20 mA Transmitter......................................................................... 48

Supplying Loop Power.............................................................................................. 50

Sourcing Pressure..................................................................................................... 52

Simulating Thermocouples........................................................................................ 55

Simulating RTDs....................................................................................................... 56

Source Scale............................................................................................................. 59

Linear-Responding Transmitters.......................................................................... 59

Square-Law Process Variables............................................................................ 59

Stepping and Ramping the Output Value.................................................................. 60

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Contents

Using Manual Step .............................................................................................. 60

Using Auto Step................................................................................................... 61

Ramping the Output............................................................................................. 62

Simultaneous Measure/Source..................................................................................... 65

Calibrating a Process Instrument.................................................................................. 68

Generating “As Found” Test Data............................................................................. 68

Adjusting the Transmitter.......................................................................................... 73

“As Left” Test Run .................................................................................................... 74

Test Comments........................................................................................................ 75

Calibrating a Delta-Pressure Flow Instrument.......................................................... 75

Calibrating a Limit Switch......................................................................................... 76

Transmitter Mode.......................................................................................................... 79

Memory Operations....................................................................................................... 81

Saving Results.......................................................................................................... 81

Reviewing Memory................................................................................................... 83

Data Logging............................................................................................................ 83

Recording Min and Max Measurements................................................................... 86

Running a Preloaded Task....................................................................................... 86

Clearing Memory...................................................................................................... 86

Using the Built-in Calculator.......................................................................................... 87

Saving to and Recalling from the Registers.............................................................. 87

Using the Calculator to Set the Source Value.......................................................... 88

Quick Guide to Applications.......................................................................................... 88

Communicating with a PC............................................................................................. 98

Maintenance.................................................................................................................. 98

Replacing the Battery Pack...................................................................................... 98

Internal Lithium Backup Battery................................................................................ 99

Cleaning the Calibrator............................................................................................. 99

(continued)

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Users Manual

Calibration Data ........................................................................................................ 99

In Case of Difficulty................................................................................................... 99

Service Center Calibration or Repair ........................................................................ 100

Replacement Parts ........................................................................................................ 101

Accessories.................................................................................................................... 102

Specifications................................................................................................................. 104

DC Voltage Measurement......................................................................................... 105

AC Voltage Measurement......................................................................................... 106

DC Current Measurement......................................................................................... 107

Resistance Measurement.......................................................................................... 107

Continuity Testing..................................................................................................... 108

Frequency Measurement.......................................................................................... 108

DC Voltage Output.................................................................................................... 109

DC Current Output.................................................................................................... 110

Resistance Sourcing................................................................................................. 111

Frequency Sourcing.................................................................................................. 112

Temperature, Thermocouples................................................................................... 113

Temperature, Resistance Temperature Detectors.................................................... 116

Loop Power Supply................................................................................................... 118

Top and Bottom Limits of Ranges with Auto Range On............................................ 119

General Specifications.............................................................................................. 121

Index ............................................................................................................................. 125

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List of Tables

Table Title Page

1. Summary of Source and Measure Functions..................................................................... 4

2. Input/Output Jacks and Connectors................................................................................... 12

3. Key Functions .................................................................................................................... 15

4. Battery Life......................................................................................................................... 22

5. Thermocouple Types Accepted.......................................................................................... 35

6. RTD Types Accepted......................................................................................................... 37

7. Simultaneous MEASURE/SOURCE Functions with Loop Power Disabled ....................... 66

8. Simultaneous MEASURE/SOURCE Functions with Loop Power Enabled........................ 67

9. Replacement Parts............................................................................................................. 101

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List of Figures

Figure Title Page

1. Standard Equipment .......................................................................................................... 5

2. Definition of Symbols .........................................................................................................7

3. Jumper Connections for Demonstration............................................................................. 11

4. Measure/Source Example.................................................................................................. 11

5. Input/Output Jacks and Connectors................................................................................... 13

6. Keys................................................................................................................................... 14

7. Elements of a Typical Display............................................................................................ 18

8. Using the Bail and Installing the Strap............................................................................... 19

9. Removing the Battery and Using the Charger.................................................................... 21

10. Electrical Measurement Connections................................................................................. 29

11. Gage and Differential Pressure Modules........................................................................... 31

12. Connections for Measuring Pressure................................................................................. 33

13. Measuring Temperature with a Thermocouple................................................................... 36

14. Using a Jumper Correctly................................................................................................... 39

15. Measuring Temperature with an RTD................................................................................ 40

16. Electrical Sourcing Connections ........................................................................................ 47

17. Connections for Simulating a 4 to 20 mA Transmitter........................................................ 49

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18. Connections for Supplying Loop Power.............................................................................. 51

19. Connections for Sourcing Pressure.................................................................................... 54

20. Connections for Simulating a Thermocouple...................................................................... 57

21. Connections for Simulating an RTD ................................................................................... 58

22. Checking a Relay Output Trip Alarm.................................................................................. 64

23. Calibrating a Thermocouple Temperature Transmitter....................................................... 70

24. Limit Switch Terminology.................................................................................................... 76

25. Calibrating a Chart Recorder.............................................................................................. 89

26. Measuring Voltage Drop..................................................................................................... 8 9

27. Monitoring AC Line Voltage and Frequency....................................................................... 90

28. Calibrating a Current-to-Pressure (I/P) Transmitter ............................................................ 91

29. Measuring the Output Current of a Transmitter.................................................................. 92

30. Measuring a Precision Resistor.......................................................................................... 93

31. Sourcing Resistance........................................................................................................... 93

32. Checking a Switch.............................................................................................................. 94

33. Checking a Tachometer...................................................................................................... 94

34. Calibrating a Pressure-to-Current (P/I) Transmitter ............................................................ 95

35. Calibrating a mV to Current Transmitter............................................................................. 96

36. Checking a Vortex Sheeding Flowmeter ............................................................................ 97

37. LCD Operating Environment Specification......................................................................... 123

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Documenting Process Calibrator

Introduction

The Fluke 744 Documenting Process Calibrator (hereafter referred to as the calibrator) is a batterypowered, hand-held instrument that measures and sources electrical and physical parameters, and provides basic HART when used with HART-capable transmitters. Refer

744

to the on how to use the HART communication feature.

The calibrator lets you troubleshoot, calibrate, verify, and document your work on process instruments. Calibrator Specifications are at the back of the manual.

A summary of the measuring and sourcing functions provided by the calibrator is shown in Table 1. In

HART



communicator functions



Mode Users Guide

for instructions

addition to these functions, the calibrator has the following features:

•

General features:

An analog display to make it easy to read measurements when the input is unstable.

A setup option that lets you set the display to English, French, German, Italian, or Spanish.

A thermocouple (TC) input/output jack and internal isothermal block with automatic reference-junction temperature compensation. Or, you can manually enter an external temperature reference.

The ability to store results for later review.

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The ability to automatically log up to 8,000 data points.

A serial computer interface for uploading/downloading tasks, lists, and results.

Automatic calibration procedures for transmitters and limit switches using split screen MEASURE/SOURCE mode.

Transmitter mode in which the calibrator can be configured to emulate the functions of a process instrument.

Built-in calculator with square-root function, and accessible registers containing measure and source values.

An optional bar code wand for entering alphanumeric characters.

•

Measuring features:

Damping (smoothing of the last several readings), with display indicator of damped status.

Display of measurements in engineering units, percent of scale, square-law inputs, or custom units.

The ability to capture and display minimum and maximum measured levels.

•

Sourcing features:

The ability to set source values to engineering units, percent of scale, square-law outputs, or custom units.

Manual and automatic stepping, and an output ramp feature for testing limit switches. Trip detect is either a 1 V change or a continuity status change (Open or Short) from one ramp increment to the next.

For performance testing and calibration instructions order the

74X Series Calibration Manual

(PN 602505). To contact Fluke, call: USA and Canada:

1-888-99-FLUKE (1-888-993-5853) Europe: +31 402-678-200 Japan: +81-3-3434-0181 Singapore: +65-738-5655 Anywhere in the world: +1-425-356-5500

Or visit us on the World Wide Web: www.fluke.com

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Standard Equipment

The items listed below and shown in Figure 1 are included with your calibrator. If the calibrator is damaged or something is missing, contact the place of purchase immediately. To order replacement parts or spares, see the user-replaceable parts list at the end of this manual.

•

TL24 industrial test leads (two sets)

•

AC20 test clips (two sets)

•

TP20 test probes (one set)

•

HART interface cable

•

BP7235 rechargeable nickel-metal hydride pack

•

BC7217 battery charger with Instruction Sheet

•

Adjustable quick-release strap (PN 946769)

•

Jumper for three-wire RTD measurement

connections (two included, PN 944632)

Documenting Process Calibrator

Standard Equipment

•

744 Users Manual

English (PN 691287) French (PN 691300) German (PN 691311) Italian (PN 691318) Spanish (PN 691303)

•

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HART



Mode Users Guide

English (PN 691292) French (PN 691326) German (PN 691334) Italian (PN 691337) Spanish (PN 691329)

•

DPC/TRACK



Software utility version with interface cable (9-pin male-female straightthrough, PN 943738).

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Users Manual

Table 1. Summary of Source and Measure Functions

Function Measure Source

vdc V 0 V to +/-300 V 0 V to 15 V (10 mA max)

hac V 0 V to 300 V rms, 20 Hz to 5 kHz No sourcing hFrequency 1 Hz to 1 kHz (100 mV to 300 V rms)

1 kHz to 30 kHz (0.5 V to 30 V rms) 30 kHz to 50 kHz (1 V to 30 V rms)

qResistance 0 Ω to 11 k Ω 0 Ω to 11 k Ω

0.1 V to 10 V p-p sine wave, or peak square wave, 0 Hz to 50 kHz

mdc Current 0 mA to 110 mA 0 to 22 mA (28 V max), sourcing or sinking

qContinuity Beep and the word Short indicates continuity No sourcing

tThermocouple Types E, N, J, K, T, B, R, S, C, L, or U tRTD 100 Ω Platinum (3926)

100 Ω Platinum (385)

120 Ω Nickel (672) 200 Ω Platinum (385) 500 Ω Platinum (385)

1000 Ω Platinum (385)

10 Ω Copper (427)

100 Ω Platinum (3916)

pPressure 27 modules ranging from 0 to 10 in. H2O

(2.5 kPa) to 0 to 10,000 psi (69,000 kPa) sLoop Power 24 or 28 V (22 mA max) Note: Use an external hand pump or other pressure source as a pressure stimulus for the source pressure function.

Note

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Documenting Process Calibrator

Standard Equipment

TP20

Test Probe

(1 Red and 1 Black)

AC20

Test Clip

(2 Red and 2 Black)

Test Leads

(2 Red and 2 Black)

TL24

Jumper

(2 Black)

Figure 1. Standard Equipment

Strap

123

RTD

30V MAX

456

mA mA

RTD

MEASSOURCE

RTD

CLEAR

(ZERO)

ENTER

300V

MAX

ot01f.eps

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BC7217

Battery Charger

BP7235

Nickel-Metal Hydride

Battery Pack

HART

Interface

Cable

HART Mode Users Guide

Users

Manual

ot02f.eps

Figure 1. Standard Equipment (cont)

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Documenting Process Calibrator

Safety Information

This calibrator is designed and tested in accordance with IEC1010-1 and CAN/CSA C22.2 No.

1010.1-92. Use the calibrator only as specified in

AC-Alternating Current

DC-Direct Current

Fuse

Pressure

ON/OFF

Recycling

CAT

Figure 2. Definition of Symbols

this manual, otherwise the protection provided by the calibrator may be impaired.

Symbols used on the calibrator and in this manual are explained in Figure 2.

CAUTION see explanation in manual

Common (LO) Input equipotentiality Equipment protected throughout by DOUBLE INSULATION or

REINFORCED INSULATION Conforms to relevent European Union directives.

Conforms to relevent Canadian Standards Association directives.

Overvoltage (Installation) Category IEC 1010-1 refers to the level of Impluse Withstand Voltage protection provided. Typical locations include; Mains Wall outlets, local appliances and PORTABLE EQUIPMENT.

, Pollution Degree 2 per

gj56f.eps

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Safety Information (cont)

A Warning identifies conditions and actions that pose hazards to the user; a Caution identifies conditions and actions that may damage the calibrator or the equipment under test.

Warning

To avoid electric shock or personal injury, adhere to the following practices:

• Do not use the calibrator if it is damaged.

Before you use the calibrator, inspect the insulating cover. Look for cracks or missing plastic. Pay particular attention to the insulation surrounding the connectors.

• Disconnect the power and discharge all high-

voltage capacitors in the equipment under test before testing resistance or continuity.

• Inspect the test leads for damaged insulation

or exposed metal. Check test lead continuity. Replace damaged test leads before using the calibrator.

• Do not use the calibrator if it operates

abnormally. Protection may be impaired. When in doubt, have the calibrator serviced.

• Select the proper function and range for your

measurement.

• Use caution when working above 30 V ac

rms, 42 V ac pk, or 60 V dc. Such voltages pose a shock hazard.

• When using the probes, keep your fingers

away from the probe contacts. Keep your fingers behind the finger guards on the probes.

• Connect the common test lead before you

connect the live test lead. When you disconnect test leads, disconnect the live test lead first.

• Replace the battery as soon as there is a low

battery indication on the display. The possibility of false readings can lead to electric shock and personal injury.

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Documenting Process Calibrator

Safety Information

Safety Information (cont)

Warning (cont)

• Do not apply more than the rated voltage, as

marked on the calibrator, between the terminals, or between any terminal and earth ground.

• When using probes, keep your fingers

behind the finger guards.

• Do not use the calibrator with any part of the

case or cover removed.

• Do not operate the calibrator around

explosive gas, vapor, or dust.

• When using a pressure module, make sure

the process pressure line is shut off and depressurized before you connect it to or disconnect it from the pressure module.

• Disconnect test leads before changing to

another measure or source function.

• When servicing the calibrator, use only

specified replacement parts.

• Do not use any battery eliminator other than

the Fluke model BE9005 Battery Eliminator.

Caution

To avoid possible damage to the calibrator or the equipment under test, follow these guidelines:

• Disconnect circuit power and discharge all

high-voltage capacitors before testing resistance, continuity, diodes, or capacitance.

• Use the proper terminals, function, and range

for your measurements.

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Getting Started Exercise

The following is a brief getting started exercise that will make it easier to understand the instructions in the rest of the manual.

1. When you first unpack the calibrator, you will need to charge the battery. See Figure 9 and charge the battery for 2 hours.

2. Reinstall the battery in the calibrator.

3. Connect the calibrator’s voltage output to its

voltage input as follows: connect leftmost pair of jacks (V Ω RTD SOURCE) to the right most pair of jacks (V MEAS). (See Figure 3.)

4. Press o to turn on the calibrator. Press u and d to adjust the display contrast for the best looking display. The calibrator powers up in the dc voltage measurement function, and is taking readings on the V MEAS pair of input jacks.

5. Press s to switch to the SOURCE screen. The calibrator is still measuring dc voltage, and you can see the active measurements at the top of the display.

6. Press v to select dc voltage sourcing. Press 5 on the keypad and eto begin sourcing 5.0000 V dc.

7. Now press M to go to the split-screen, simultaneous MEASURE/SOURCE mode. The calibrator is simultaneously sourcing dc volts and measuring dc volts. You can see the measurement readings in the top window, and the active source value in the bottom window as shown in Figure 4.

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Documenting Process Calibrator

Getting Started Exercise

RTD

CLEAR

(ZERO)

ENTER

300V

MAX

RTD

30V

MAX

456

123

mA mA

RTD

CAT

SOURCE

MEAS

30V

MAX

ot03f.eps

Figure 3. Jumper Connections for Demonstration

gj4s.eps

Figure 4. Measure/Source Example

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Users Manual

Operating Features

Input and Output Jacks

Figure 5 shows the calibrator input and output jacks. Table 2 explains their use.

Table 2. Input/Output Jacks and Connectors

No. Name Description

1 Battery Eliminator jack Jack for the Model BE9005 Battery Eliminator. Use the battery eliminator for bench-top

applications where ac line power is available. This input does not charge the battery.

2 w SERIAL PORT Connects the calibrator to an RS-232 serial port on a personal computer. 3 Pressure module

connector

4 TC input/output Jack for measuring or simulating thermocouples. This jack accepts a miniature

5, 6 wMEAS V jacks Input jacks for measuring voltage, frequency, or three- or four-wire RTDs (Resistance

7, 8 wSOURCE mA,

MEAS mA Ω RTD jacks

9,10 wSOURCE V Ω RTD

jacks

Connects the calibrator to a pressure module.

polarized thermocouple plug with flat, in-line blades spaced 7.9 mm (0.312 in) center to center.

Temperature Detectors). Jacks for sourcing or measuring current, measuri ng resistance and RTDs, and supplying loop power.

Output jacks for sourcin g voltage, resistance, frequency, and for simulating RTDs.

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RTD

30V

MAX

SOURCE

456

123

mA mA

RTD

CAT

SOURCE

MEAS

30V

MAX

Documenting Process Calibrator

Operating Features

DOCUMENTING PROCESS CALIBRATOR

744

MEAS

SETUPmA

RTD

CLEAR

(ZERO)

ENTER

300V

MAX

Figure 5. Input/Output Jacks and Connectors

ot05f.eps

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Users Manual

Keys

Figure 6 shows the calibrator keys and Table 3 explains their functions. The softkeys are the four unmarked blue keys just below the display. Softkey functions are defined by the labels that appear above the softkey during operation. Softkey labels and other display text are shown in this manual in bold type, for example,

Choices.

DOCUMENTING PROCESS CALIBRATOR

744

MEAS

SOURCE

789

456

123

mA mA

V RTD

SOURCE

30V MAX

30V

MAX

SETUPmA

RTD

CLEAR

(ZERO)

ENTER

RTD

CAT

MEAS

300V 30V MAX

7 8 9

ot06f.eps

Figure 6. Keys

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Documenting Process Calibrator

Operating Features

Table 3. Key Functions

No. Name Description

1 M key Cycles the calibrator through MEASURE, SOURCE, and MEASURE/SOURCE modes. 2 m key Selects mA (current) measure or source function. For loop power on/off, go to the Setup

mode.

3 s key Enters and exits Setup mode to modify operating parameters. 4 Softkeys Perform the function defined by the label above each key on the display. 5 C key Turns the backlight on and off. 6 p key Selects the pressure measurement or sourcing function. 7 t key Selects TC (thermocouple) or RTD (resistance temperature detector) measurement or

sourcing functions.

8 r key Toggles between HART communication mode and analog operation. In calculator mode, this

key provides the square root function.

9 c key Clears a partial data entry, or zeros the output when in the SOURCE mode. When using a

pressure module, zeros the pressure module reading.

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Users Manual

Table 3. Key Functions (cont)

No. Name Description

10 u, d, L, and R

keys

11 ekey Terminates a numeric entry when setting a source value, or confirms your choice in a

12 qkey Toggles between resistance and continuity functions in MEASURE mode, or selects

13 Numeric keypad Used whenever a numeric entry is required. 14 hkey Toggles between ac voltage and frequency functions in MEASURE mode, or selects

15 vkey Selects the dc voltage function in MEASURE mode, or selects dc voltage in SOURCE

16 okey Turns the power on and off.

• Adjust the display contrast.

• Make choices from lists on the display.

• Increase or decrease the source level when using the step feature.

• In calculator mode, provide arithmetic functions (+ - ÷ ×).

list. In calculator mode, provides the equals arithmetic operator (=).

the resistance function in SOURCE mode.

frequency output in SOURCE mode.

mode.

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Documenting Process Calibrator

Operating Features

Display

Figure 7 shows the features of a typical display. The display shown is MEASURE mode. Near the top of

the display is “Source Off.” This is the area of the display that shows what is happening in the other mode (SOURCE or MEASURE). The other parts of the display are as follows:

• Status Bar: shows the time and date (if set in

Setup mode), and shows the status of Loop Power, Battery Save, and Backlight Timeout; all of which are set in Setup mode. The low battery and backlight on symbols also appear here.

• Mode Indicator: Shows whether the calibrator is

in MEASURE or SOURCE mode. In split screen MEASURE/SOURCE mode, there is a Mode Indicator for each window.

• Measured Value: Shows the measured value in

your choice of engineering units or percent of scale.

• Range Status: Shows whether Auto Range is on,

and what range is currently being used.

• Custom Units Indicator: Shows that the displayed

units are custom. The original engineering units of the measure or source function are not displayed.

• Secondary Value: Shows the measure or source

value in original engineering units whenever scaling or custom units are active.

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Loop Power Annunciator

Time and Date Display

Status Bar

Mode Indicator

Measured Value

Battery Gauge

Source Status

Undamped (Unsettled) Indicator

Custom Units Indicator

Secondary Value

Softkey Labels

ot07c.eps

Figure 7. Elements of a Typical Display

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Setting Up the Calibrator

Using the Strap and Bail

After you unpack the calibrator, attach its carrying strap as shown in Figure 8. You can adjust the strap as necessary to hang the calibrator on any sturdy

Documenting Process Calibrator

Setting Up the Calibrator

support. Figure 8 also shows you how to open the bail to stand the calibrator at a comfortable viewing angle for benchtop use.

Figure 8. Using the Bail and Installing the Strap

gj8f.eps

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Users Manual

Charging the Battery

wBefore you use the calibrator for the first time, charge its battery pack in the external battery charger. The Model BC7217 charger charges both the NiMH and Ni-Cd battery packs.

Figure 9 shows how to remove the battery. Remove the battery door and tap the calibrator with your hand to get the battery out. Place the battery in the charger and connect the charger to line power. The charger automatically senses line voltage and adjusts itself accordingly.

A discharged battery is fully charged in 2 hours or less in fast-charge mode (steady indicator light on

the charger). Full charge is maintained after that time in trickle-charge mode (blinking indicator light on the charger). Switching between charging modes is automatic. You can leave the battery pack on trickle charge indefinitely without damage.

Note

When you remove a charged battery from the charger, wait for the blinking indicator to go off before you insert a discharged battery. It takes about 2 seconds for the battery charger to reset.

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BATTERY ACCESSBATTERY ACCESS

Documenting Process Calibrator

Setting Up the Calibrator

BATTERY ACCESSBATTERY ACCESS

Figure 9. Removing the Battery and Using the

Charger

gj9f.eps

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Users Manual

Battery Life

NiMH battery. Calibrator performance is guaranteed to meet specifications until the battery gauge reads

The calibrator senses which battery is installed

empty (Y or b).

(standard NiMH, or optional Ni-Cd model BP 7217). If the NiMH battery is installed, a battery gauge bar graph Z shows on the upper right of the display. If the Ni-Cd battery is installed, there is no battery level indication except for a low battery symbol b, that appears when it is time to charge the battery.

To replace the battery, refer to “Replacing the Battery” later in this manual for instructions. In the case of the Ni-Cd battery, for longest battery life and best performance, wait for b to appear before you charge the battery.

Table 4 shows the typical operating time for a new, fully charged NiMH (Nickel-Metal Hydride) battery pack. The optional Ni-Cd battery (Model BP7217) provides approximately half the battery life of the

Table 4. Typical Battery Life with Standard NiMH Battery Pack

Operating Modes Backlight Off Backlight On

Measure, continuous 13 Hours 12 Hours Measure and source, with loop power on, continuous 7 Hours 6 Hours Typical intermittent operation >16 Hours >16 Hours

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Documenting Process Calibrator

Setting Up the Calibrator

Preserving Battery Life

An optional Auto Battery Save feature turns the calibrator off after a selected idle time. The default setting for

Battery Save

Cd battery pack (Model BP7217), the E symbol shows in the upper right corner of the display. The setting is preserved after you turn off the power. Auto Battery Save works the same when using the battery eliminator. Turn on the follows:

1. Press s.

2. Press d to highlight

3. Press e or the

4. Press to u highlight

5. To accept the timeout period shown on the

Auto Battery Save is Off. When Auto

is On, and you are using the optional Ni-

Auto Battery Save feature as

Off following Auto Battery

Save

Choices softkey.

On, then press e.

display, you can finish here. Press

Done to exit

Setup mode and do not go on to step 6.

6. To change the timeout period, press d to highlight the timeout period following

Save Timeout

7. Press eor the

Choices softkey.

Battery

8. Enter your choice of timeout period in minutes (accepted range: 1 to 120 minutes).

9. Press the

10. Press the

Done softkey. Done softkey or sto exit Setup

mode.

Using the Optional Battery Eliminator

Caution

To avoid damage to the calibrator, use only Fluke Model BE9005 Series Battery Eliminator, available from your Fluke representative.

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Users Manual

Where ac power is available, you can use the optional Fluke Model BE9005 Battery Eliminator to conserve battery power. When the battery eliminator is used, the battery is internally disconnected, and can be removed from the calibrator. The battery eliminator does not charge the battery. The battery eliminator is handy for troubleshooting process instruments on the workbench, and for long-term data logging. When you calibrate an instrument, you will get best results using battery power.

Selecting the Display Language

The calibrator displays information in five languages. English is the default. To change the display language, proceed as follows:

1. Press s.

2. Press the third softkey from the left twice.

3. Press d three times.

4. Press e.

5. Press uor d to highlight your choice of language.

6. Press eto confirm your choice. The language you choose is the power-up default.

7. Press s to exit Setup mode.

Adjusting the Display Contrast

Press u or R to increase contrast. Press d or L to decrease contrast. When the u and d keys are being used to select an item from a list, for example in Setup mode, use the L or R keys. In calculator mode, all four direction keys are used for arithmetic functions.

Displaying the Date and Time

The date and time can be shown at the top of the display during normal operation. In Setup mode you can turn this date and time display on or off. You can also control the format used to display the date and time. You should set the calendar and clock whether or not you use the date and time display, since a timestamp is applied to all saved results.

Page 35

Proceed as follows to set up the time and date displays:

1. Press s.

Documenting Process Calibrator

Setting Up the Calibrator

2. Press the

Next Page softkey. The display

appears as follows:

3. Use the u and d keys to move the cursor to the parameter you want to change, then press eor the

Choices softkey to choose a

setting for that parameter. For example, the following display appears after you select

Format

Date

gj38s.eps

gj39s.eps

4. Press uor d to move the cursor to the desired date format.

5. Press eto go back to the sdisplay.

6. Make another selection or press the

Done

softkey or s to save your settings and exit Setup mode.

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Using the Backlight

Press C to toggle the display backlight on and off. When the backlight is on, the G symbol shows at the top of the display. You can minimize battery usage by setting the calibrator to turn the display backlight off automatically. When the backlight is on and Auto Backlight Off is activated, the a symbol shows at the top of the display. To automatically turn off the backlight after a set time, proceed as follows:

1. Press s.

2. Press d to highlight

Off

3. Press eor the

4. Press u to highlight

5. To accept the timeout period shown on the display, press

Done to exit, and do not go on to

step 6.

6. To change the timeout period, press d to highlight the timeout period following

Timeout

Off following Auto Backlight

Choices softkey. On, then press e.

Backlight

7. Press eor the

Choices softkey.

8. Enter your choice of timeout period in minutes (accepted range: 1 to 120 minutes).

9. Press the

10. Press the

Done softkey. Done softkey or s to exit Setup

mode.

Personalizing the Calibrator

You can load your name or some other alphanumeric identifier into the calibrator to be displayed at powerup and in saved results. Proceed as follows to load an identifier:

1. Press s.

2. Press

3. Press d to move the cursor to the same line

Next Page twice.

ID.

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Documenting Process Calibrator

Setting Up the Calibrator

4. Press eor the

Choices softkey. The

display appears as follows:

gj40s.eps

5. The ID string is shown at the bottom of the boxed area. To erase a character, press the

Space

softkey. To erase the whole string, press

Back

6. Press u, d, L, or R to select a character, then press e. Use the numeric keypad if you want to enter a number.

7. Repeat step 6 until you are satisfied with the ID string appearing in the window.

8. Press the

9. Press the mode.

Done softkey. Done softkey or s to exit Setup

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Using Measure Mode

Note

To achieve best noise rejection and highest accuracy performance, do not use the battery eliminator, and tie all three common jacks together.

The operating mode (i.e., MEASURE, SOURCE) is shown in a reverse-video bar on the display. If the calibrator is not in MEASURE mode, press M until MEASURE is shown. You must be in MEASURE mode to change any of the MEASURE parameters.

Measurement Ranges

The calibrator normally changes to the appropriate measurement range automatically. The lower right

side of the display shows either “Range” or “Auto Range” depending on the range status. Auto Range switch points are shown in the specifications at the

end of this manual. When you press the softkey, the range is locked. Press it again to cycle to and lock on the next higher range. Auto Range is reactivated when you select another measurement function.

If the range is locked, overrange inputs produce a display of produce a display of

- - - - - -. In Auto Range, out of range inputs ! ! ! ! ! !.

Range

Measuring Electrical Parameters

When you turn on the calibrator, it powers up in the dc voltage measurement function. Figure 10 shows electrical measurement connections. To select an electrical measurement function from either SOURCE or MEASURE/SOURCE mode, first press M for MEASURE mode, then proceed as follows:

1. Press m for current, v for dc voltage, h once for ac voltage or twice for frequency, or q for resistance.

Page 39

Documenting Process Calibrator

Using Measure Mode

+–

Red

RTD

SOURCE

30V

MAX

30V MAX

Black

mA mA

Red

RTD

SOURCE

30V

MAX

30V

MAX

Black

Figure 10. Electrical Measurement Connections

mA mA

RTD

CAT

MEAS

MAX

RTD

CAT

MEAS

MAX

30V

300V

MAX

30V

300V

MAX

gj10f.eps

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Users Manual

Note

When measuring frequency, you are prompted to select a frequency range. If you expect the frequency you are measuring to

be below 20 Hz, press lower frequency range, then press

2. Connect the test leads as shown in Figure 10, depending on the measurement function.

to select the

Testing Continuity

When testing continuity, the beeper sounds and the

Short appears on the display when the

word resistance between the Ω MEAS jack and its common jack is less than 25 Ω. The word appears when the resistance is greater than 400 Ω. Proceed as follows to test continuity:

1. Remove power from the circuit to be tested.

2. If necessary, press M for MEASURE mode.

3. Press q twice so that

4. Connect the calibrator to the circuit to be tested as Figure 10 shows.

Open appears.

Open

Measuring Pressure

Many ranges and types of pressure modules are

available from Fluke. See “Accessories” near the back of this manual. Before you use a pressure module, read its Instruction Sheet. The modules vary in how you use them, how you zero them, what types of process pressure media are allowed, and accuracy specification.

Figure 11 shows gage and differential modules. Differential modules also work in gage mode by leaving the low fitting open to atmosphere.

To measure pressure, attach the appropriate pressure module for the process pressure to be tested as described in the module’s Instruction Sheet.

Proceed as follows to measure pressure:

wWarning

To avoid a violent release of pressure in a pressurized system, shut off the valve and slowly bleed off the pressure before you attach the pressure module to the pressure line.

Page 41

Gage

700P06

PRESSURE MODULE

RANGE

100 PSIG

BURST PRESSURE 300 PSIG

7 bar700 kPa

Differential

700P04

PRESSURE MODULE

RANGE

15 PSID/G

1 bar100 kPa

BURST PRESSURE 45 PSIG

HighLow

gj11f.eps

Figure 11. Gage and Differential Pressure Modules

Documenting Process Calibrator

Using Measure Mode

Caution

To avoid mechanically damaging the pressure module, never apply more than 10 ft.-lb. of torque between the pressure module fittings, or between the fittings and the body of the module. Always apply appropriate torque between the pressure module fitting and connecting fittings or adapters.

To avoid damaging the pressure module from overpressure, never apply pressure above the rated maximum printed on the pressure module.

To avoid damaging the pressure module from corrosion, use it only with specified materials. Refer to the printing on the pressure module or the pressure module instruction sheet for the acceptable material compatibility.

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Users Manual

1. Connect a pressure module to the calibrator as shown in Figure 12. The threads on the

pressure modules accept standard ¼ NPT pipe fittings. Use the supplied ¼ NPT to ¼ ISO adapter if necessary.

2. Press M for MEASURE mode.

3. Press p. The calibrator automatically senses which pressure module is attached and sets its range accordingly.

4. Zero the pressure module as described in the module’s Instruction Sheet. Modules vary in zeroing procedures depending on module type. You MUST perform this step before you execute a task that sources or measures pressure.

5. If desired, you can change pressure display units to psi, mHg, inHg, mH

O@60°F, ftH2O, bar, g/cm2, or Pa. Metric

inH

O, inH2O@,

units (kPa, mmHg, etc.) are shown in Setup mode in their base units (Pa, mHg, etc.). Change the pressure display units as follows:

a. Press s. b. Press c. Press eor the

Next Page twice.

the cursor on

Choices softkey with

Pressure Units.

d. Select the pressure units with u or d. e. Press e. f. Press

Done.

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Documenting Process Calibrator

Using Measure Mode

RTD

30V

MAX

SOURCE

456

123

mA mA

RTD

CAT

SOURCE

MEAS

30V

MAX

MEAS

744

RTD

CLEAR

(ZERO)

ENTER

300V

MAX

DOCUMENTING PROCESS CALIBRATOR

Gage

Module

SETUPmA

Differential

Figure 12. Connections for Measuring Pressure

Isolation

Valve

Module

Tank

ot12c.eps

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Users Manual

Measuring Temperature

Using Thermocouples

The calibrator supports eleven standard thermocouples, each identified with an alpha character: E, N, J, K, T, B, R, S, C, L, or U. Table 5 summarizes the ranges and characteristics of the supported thermocouples.

To measure temperature using a thermocouple, proceed as follows:

1. Attach the thermocouple leads to the appropriate TC miniplug, then to the TC input/output as shown in Figure 13.

other. Do not try to force a miniplug in the wrong polarization

If the calibrator and the thermocouple plug

are at different temperatures, wait one minute or more for the connector temperature to stabilize after you plug the miniplug into the TC input/output.

2. If necessary, press M for MEASURE mode.

One pin is wider than the

Note

3. Press t. The display prompts you to select the thermocouple type.

4. Select the desired thermocouple type using the u or d followed by e.

5. If necessary, you can change between

Temperature Units

a. Press s. b. Press the c. Use the u and d keys to move the cursor

to the desired parameter. Then press either eor the setting for that parameter.

d. Press u or d to move the cursor to the

desired setting. e. Press eto go back to the sdisplay. f. Press the Done softkey or sto exit Setup

mode.

6. If necessary, you can change between

IPTS-68 Temperature Scale in Setup mode. The

procedure is the same as steps a-f above.

as follows:

Next Page softkey twice.

Choices softkey to choose a

°C or °F

ITS-90 or

Page 45

Documenting Process Calibrator

Using Measure Mode

Table 5. Thermocouple Types Accepted

Positive Lead (H)

Type Positive Lead

Material

E Chromel Purple Violet Constantan -250 to 1000 N Ni-Cr-Si Orange Pink Ni-Si-Mg -200 to 1300

J Iron White Black Constantan -210 to 1200 K Chromel Yellow Green Alumel -270 to 1372 T Copper Blue Brown Constantan -250 to 400 B Platinum (30% Rhodium) Gray Platinum (6% Rhodium) 600 to 1820 R Platinum (13% Rhodium) Black Orange Platinum -20 to 1767 S Platinum (10% Rhodium) Black Orange Platinum -20 to 1767

C *** Tungsten (5% Rhenium) White Tungsten (26% Rhenium) 0 to 2316

L (DIN J) Iron Constantan -200 to 900

Color Negative Lead Specified Range

ANSI* IEC**

Material (°C)

U (DIN T) Copper Constantan -200 to 600 *American National Standards Institute (ANSI) device negative lead (L) is always red.

**International Electrotechnical Commissi on (IEC) device negative lead (L) is always white. *** Not an ANSI designation but a Hoskins Engineering Company designation.

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Users Manual

V RTD

MAX

mA mA

SOURCE

30V

MAX

RTD

CAT

MEAS

30V

MAX

300V

MAX

Process Temperature

Warning

TC Miniplug

Figure 13. Measuring Temperature with a Thermocouple

30V maximum to

gj12f.eps

Page 47

Documenting Process Calibrator

Using Measure Mode

Using Resistance-Temperature Detectors (RTDs)

three-terminal configuration. The calibrator accepts RTD measurement inputs in two-, three-, or four-wire connections as shown in Figure 15. A four-wire

The calibrator accepts RTD types shown in Table 6.

RTDs are characterized by their resistance at 0 °C (32 °F), which is called the “ice point” or R most common R

RTD Type Ice Point (R

Pt100 (3926) 100 Ω Platinum 0.003926 Ω/°C -200 to 630 *Pt100 (385) 100 Ω Platinum 0.00385 Ω/°C -200 to 800 Ni120 (672) 120 Ω Nickel 0.00672 Ω/°C -80 to 260 Pt200 (385) 200 Ω Platinum 0.00385 Ω/°C -200 to 630 Pt500 (385) 500 Ω Platinum 0.00385 Ω/°C -200 to 630 Pt1000 (385) 1000 Ω Platinum 0.00385 Ω/°C -200 to 630 Cu10 (427) 9.035 Ω ** Copper 0.00427 Ω/°C -100 to 260 Pt100 (3916) 100 Ω Platinum 0.003916 Ω/°C -200 to 630

*Per IEC 751-Standard **10 Ω @ 25 °C

is 100 Ω. Most RTDs come in a

) Material α Range (°C)

. The

Table 6. RTD Types Accepted

configuration provides the highest measurement precision, and two-wire provides the lowest measurement precision.

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Users Manual

To measure temperature using an RTD input, proceed as follows:

1. If necessary, press M for MEASURE mode.

2. Press t twice so that

Select RTD Type shows.

3. Press u or d to select the desired RTD type.

4. Press e.

5. Press u or d to select a 2-, 3-, or 4- wire connection.

6. Attach the RTD to input jacks as the display or Figure 15 shows. Use the supplied jumper between the mA Ω RTD MEAS low jack and the V MEAS low jack as shown if you are using a 3wire connection.

7. Press e.

Caution

Do not force a dual banana plug between any two jacks in the horizontal orientation. Doing so will damage the jacks. Use the supplied jumper wire when needed for RTD measurements. You can use a dual banana plug in the vertical orientation. See Figure 14.

Page 49

Documenting Process Calibrator

Using Measure Mode

8. If necessary, you can change between °C or °F temperature units in Setup mode as follows:

mA mA

RTD

SOURCE

30V MAX

mA mA

RTD

30V MAX

RTD

300V

MEASSOURCE

MAX

RTD

CAT

MEAS

300V

MAX

30V MAX

V RTD

Figure 14. Using a Jumper Correctly

mA mA

30V MAX

WRONG

RTD

300V

MEASSOURCE

MAX

gj14f.eps

a. Press s. b. Press the

Next Page softkey twice.

c. Use the u and d keys to move the cursor

to the parameter you which to change, then press e or the

Choices softkey to

choose a setting for that parameter.

d. Press u or d to move the cursor to the

desired setting. e. Press eto go back to the sdisplay. f. Press the

Done softkey or s to exit Setup

mode.

9. If necessary, you can change between

IPTS-68 Temperature Scale in Setup mode. The

procedure is the same as steps a through f above.

ITS-90 or

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Users Manual

mA mA

V RTD

SOURCE

30V MAX

30V

MAX

RTD

CAT

MEAS

300V

MAX

30V MAX

RTD

mA mA

V RTD

SOURCE

30V MAX

30V

MAX

mA mA

V RTD

SOURCE

30V MAX

30V

MAX

RTD

CAT

MEAS

RTD

CAT

MEAS

300V

MAX

30V MAX

300V

MAX

30V MAX

RTD

gj15f.eps

Figure 15. Measuring Temperature with an RTD

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Documenting Process Calibrator

Using Measure Mode

Measurement Scale

This feature lets you scale the measurements in

accordance with a particular process instrument’s response. Percent of scale works for linear-output transmitters or square-law transmitters such as differential pressure transmitters that report flow rate.

Linear-Output Transmitters

1. If necessary, press M for MEASURE mode.

2. Select a measurement function (m,v, h,q, t, or p) as previously described.

3. Press the

4. Select

5. Use the numeric keypad to enter the 0% of scale value (

6. Press e.

7. Use the numeric keypad to enter the 100% of scale value (

8. Press e.

Scale softkey.

% scale from the list.

0% Value).

100% Value).

9. Press the

Done softkey.

Percent of scale remains in effect until you change to another measurement function or press the

Scale

softkey and select another scale mode.

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Square-Law Process Variables

When you select √ within scaling, the calibrator takes the square root of its input and displays the measurement in percent. For example, when connected to the output of a delta-pressure transmitter, the calibrator reading is proportional to flow rate.

1. If necessary, press M for MEASURE mode.

2. Select a measurement function (m,v, h,q, t, or p) as previously described.

3. Press the

4. Select

5. Use the numeric keypad to enter the 0% of scale value (

6. Press e.

7. Use the numeric keypad to enter the 100% of scale value (

8. Press e.

Scale softkey.

√ scale from the list.

0% Value).

100% Value).

9. Set

Mode to √.

10. Press e.

11. Press the

Done softkey.

Square root percent of scale remains in effect until you change to another measurement function or press the

Scale softkey and select another scale

mode.

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Documenting Process Calibrator

Using Measure Mode

Measuring or Sourcing with Custom Units

wWarning

To avoid possible electric shock, when using Custom Units for measurement, always refer to the secondary value displayed below and to the right of the main display for the actual value of the measurement in native engineering units.

You can set up the measurement or source display to show your own custom units. To do this, you select a function, for example mV dc, scale it as you choose, then enter an alphanumeric name for your

custom units, for example, “PH.” Proceed as follows to set up a custom unit:

1. When measuring or sourcing the function of your choice, press the

Custom Units from the list.

2. Enter the 0% and 100% scale points for the input of your transfer function.

Scale softkey, then select

4. Enter the 0% and 100% scale points for the output of your transfer function.

5. Enter the name of the custom units (up to four characters), for example

PH (for pH), using the

alphanumeric entry window, then press e.

Custom Units are active, the wsymbol shows

While on the display to the right of the custom unit. Once you have programmed the custom measurement unit, the custom unit is available for calibration procedures in split-screen MEASURE/SOURCE mode. To cancel

Custom Units softkey again.

Custom Units, press the

3. Press the

Custom Units softkey.

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Using the 700-IV Current Shunt

To source and measure current simultaneously, you need to use a current shunt and use the volts measure function. The Fluke 700-IV current shunt is designed specifically for use with the 700 Series Documenting Process Calibrators. To measure current with the current shunt, proceed as follows:

1. Connect the current shunt to the MEAS V jacks (rightmost).

2. Connect the current signal to be measured to the current shunt.

3. Select the dc voltage measure function.

4. Press the

5. Select

6. The calibrator is automatically configured using custom units appropriate for the current shunt.

Scale softkey.

Current Shunt from the list.

Damping Your Measurements

The calibrator normally applies a software filter to dampen measurements in all functions except continuity. The specifications assume that damping is turned on. The damping method is a running average of the last several measurements. Fluke recommends that you leave damping on. Turning damping off may be useful when measurement response is more important than accuracy or noise reduction. If you want to turn off damping, press the

More Choices softkey twice, then press the Dampen

softkey so that Off appears. Press Dampen again to turn damping back on. The default state is

On.

Page 55

Note

If a measurement falls outside a random noise window, a new average is started. If damping is turned off, or until measurements are fully

damped, the

symbol is displayed.

Documenting Process Calibrator

Using Measure Mode

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Using Source Mode

The operating mode (i.e., MEASURE, SOURCE) is shown in a reverse-video bar on the display. If the calibrator is not in SOURCE mode, press M until SOURCE is shown. You must be in SOURCE mode to change any of the SOURCE parameters.

Sourcing Electrical Parameters

To select an electrical sourcing function, proceed as follows:

1. Connect the test leads as shown in Figure 16, depending on the source function.

2. Press M for current, v for dc voltage, h for frequency, or q for resistance.

3. Enter the desired output value, then press

e. For example, to source 5.0 V dc, press v 5 . 0 e.

Note

If you are sourcing frequency, respond to the display prompt to select a zero-symmetric sine or positive square wave. The amplitude you specify is p-p amplitude.

4. To change the output value enter a new value and press e.

Note

If you are sourcing current, wait for the

symbol to go out before you use the output.

5. To set the output value to 0 in the present source function, press c.

6. To turn off sourcing completely, press c twice.

Note

Use the source current function to drive a current loop. This is different than the loop power function in which the calibrator is powering a process instrument. To source loop power, use the

Loop Power

function

accessible from Setup mode.

Page 57

Documenting Process Calibrator

Using Source Mode

mA mA

Red

RTD

SOURCE

30V

MAX

30V

MAX

RTD

CAT

MEAS

MAX

300V

MAX

30V

–

Black

Common

mA mA

Red

RTD

SOURCE

30V MAX

30V

MAX

RTD

CAT

MEAS

MAX

300V

MAX

30V

–

Black

Common

gj16f.eps

Figure 16. Electrical Sourcing Connections

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Simulating a 4 to 20 mA Transmitter

You can configure the calibrator as a load on a current loop through the SOURCE mA function. When you press the M key in SOURCE mode, the display prompts you to select

Transmitter

. When you Source mA the calibrator is sourcing current, and when you the calibrator is sourcing a variable resistance to regulate current to the specified value. Connect an external loop supply to the positive (top) mA jack as shown in Figure 17.

Also see “Transmitter Mode,” in which the calibrator can be set up to temporarily take the place of a two-wire process transmitter.

Source mA or Simulate

Simulate Transmitter

Note

Page 59

Loop

Power

Supply

Documenting Process Calibrator

Using Source Mode

DOCUMENTING PROCESS CALIBRATOR

744

MEAS

SETUP

SOURCE

Red

+24

789

456

123

mA mA

V RTD

SOURCE

30V

MAX

30V MAX

RTD

CLEAR

(ZERO)

ENTER

RTD

CAT

MEAS

300V

MAX

30V MAX

Black

UUT

–

Figure 17. Connections for Simulating a 4 to 20 mA Transmitter

ot17c.eps

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Supplying Loop Power

The calibrator supplies loop power at 28 V or 24 V dc through an internal series resistance of 250 Ω. The 28 V setting supplies enough current for two or three 4-20 mA devices on the loop in addition to the twowire transmitter but uses more battery power. Use the 24 V setting if there are two or fewer devices on the loop in addition to the two-wire transmitter. (Each device on a typical 4- to 20-mA loop has a resistance of 250 Ω, thus dropping 5 V at 20 mA. A typical transmitter must have 11 V minimum in order to operate correctly at its top end.)

When loop power is enabled, the mA (middle column) jacks are dedicated to sourcing and measuring the current loop. This means that the SOURCE mA, measure RTD, and measure Ω functions are not available (see Table 8, later in this manual.)

Connect the calibrator in series with the instrument current loop as Figure 18 shows. Proceed as follows to source loop power:

1. Press e for Setup mode.

2. Note that following

Loop Power, Disabled is

highlighted. Press e.

3. Use the u or d arrow keys to select

or Enabled 28 V.

Enabled 24

4. Press e.

5. Press the

Done softkey.

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744

MEAS

SOURCE

789

456

123

mA mA

V RTD

SOURCE

30V

MAX

30V MAX

DOCUMENTING PROCESS CALIBRATOR

SETUP

TC RTD

CLEAR

(ZERO)

ENTER

RTD

CAT

MEAS

300V MAX

30V MAX

Documenting Process Calibrator

Using Source Mode

TEST DC PWR

+–+–

Red

–+

Black

Figure 18. Connections for Supplying Loop Power

ot18c.eps

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Sourcing Pressure

The calibrator provides a source pressure display function that requires the use of an external pressure hand pump. Use this function to calibrate instruments that require a pressure source or differential pressure measurement. See Figures 19 and 34 for information about that application.

Many ranges and types of pressure modules are

To use the source pressure display, see Figure 19 and proceed as follows:

wWarning

To avoid a violent release of pressure in a pressurized system, shut off the valve and slowly bleed off the pressure before you attach the pressure module to the pressure line.

Caution

To avoid mechanically damaging the pressure module, never apply more than 10 ft.-lb. of torque between the pressure module fittings or between the fittings and the body of the module. Always apply appropriate torque between the pressure module fitting and connecting fittings or adapters.

To avoid damaging the pressure module from overpressure, never apply pressure above the rated maximum printed on the pressure module.

Page 63

Documenting Process Calibrator

Using Source Mode

1. Connect a pressure module and pressure source to the calibrator as Figure 19 shows. The threads

on the pressure modules accept ¼ NPT fittings. Use the supplied ¼ NPT to ¼ ISO adapter if necessary.

2. If necessary, press M for SOURCE mode.

3. Press p. The calibrator automatically senses which pressure module is attached and sets its range accordingly.

5. Pressurize the pressure line with the pressure source to the desired level as shown on the display.

6. If desired, you can change pressure display units to psi, mHg, inHg, mH

O, bar, g/cm2, or Pa. Metric units (kPa,

ftH

O, inH2O, inH2O@60°F,

mmHg, etc.) are shown in Setup mode in their

base units (Pa, mHg, etc.). Change the pressure display units as follows:

a. Press s. b. Press c. Press ewith the cursor on

Next Page twice.

Units

Pressure

d. Select the pressure units with the u or d

keys. e. Press e. f. Press the

Done softkey.

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V RTD

30V

MAX

DOCUMENTING PROCESS CALIBRATOR

744

MEAS

SOURCE

789

456

123

mA mA

SOURCE

30V MAX

Pressure

Module

Hand

Pump

SETUP

RTD

CLEAR

(ZERO)

ENTER

RTD

CAT

MEAS

300V

MAX

30V MAX

ot19c.eps

Figure 19. Connections for Sourcing Pressure

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Documenting Process Calibrator

Using Source Mode

Simulating Thermocouples

Note

Refer to “Measuring Temperature” earlier in the manual for a table of data relating to thermocouple types supported by the calibrator.

Connect the calibrator TC input/output to the instrument under test with thermocouple wire and the appropriate thermocouple mini-connector (polarized thermocouple plug with flat, in-line blades spaced 7.9 mm [0.312 in] center to center).

the other. Do not try to force a miniplug in the wrong polarization

Proceed as follows to simulate a thermocouple:

1. Attach the thermocouple leads to the appropriate TC miniplug, then to the TC input/output as Figure 13 shows.

2. If necessary, press M for SOURCE mode.

3. Press t for the display that prompts you to enter thermocouple type.

4. Press the u or d key followed by e to select the desired thermocouple type.

. Figure 20 shows this connection.

One pin is wider than

5. Press the u or d key followed by e to select

Linear T (default), or Linear mV, (for

calibrating a temperature transmitter that responds linearly to millivolt inputs).

6. Enter the temperature you want to simulate as prompted by the display and press e.

Note

If you use copper wire instead of thermocouple wire, the reference junction is no longer inside the calibrator. The reference junction is moved to the instrument (transmitter, indicator, controller, etc.) input terminals. You must measure this external reference temperature accurately and enter

and

Ref.

it into the calibrator. Do this by pressing and setting

Junc. Temp.

Ref. Junc. Compensat

After you enter the external reference temperature, the calibrator corrects all voltages to compensate for this new reference junction temperature.

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Simulating RTDs

Note

Refer to Table 6 for information about RTD (Resistance-Temperature Detector) types supported by the calibrator.

Connect the calibrator to the instrument under test as shown in Figure 21. The figure shows connections for two, three, or four-wire transmitters. For three or four-wire transmitters, use the 4-inch long stackable jumper cables to connect the third and fourth wires at the source V Ω RTD jacks.

Proceed as follows to simulate an RTD (ResistanceTemperature Detector):

1. If necessary, press M for SOURCE mode.

2. Press t until the select RTD type display is showing.

3. Press the u or d keys followed by e to select the desired RTD type.

4. Enter the temperature you want to simulate as prompted by the display, then press e.

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DOCUMENTING PROCESS CALIBRATOR

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Documenting Process Calibrator

Using Source Mode

MEAS

SOURCE

789

456

123

mA mA

V RTD

SOURCE

30V

MAX

30V

MAX

Color depends

TEST DC PWR

++–

on type of TC

SETUP

RTD

CLEAR

(ZERO)

ENTER

RTD

CAT

MEAS

300V

MAX

30V MAX

–+

TC Miniplug

ot20c.eps

Figure 20. Connections for Simulating a Thermocouple

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mA mA

RTD

SOURCE

30V

MAX

30V MAX

RTD

CAT

MEAS

300V

MAX

30V

MAX

-PS +PS M

-IN +IN

mA mA

RTD

SOURCE

30V

MAX

30V MAX

RTD

CAT

MEAS

300V

MAX

30V

MAX

4 3

ot21f.eps

Figure 21. Connections for Simulating an RTD

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Documenting Process Calibrator

Using Source Mode

Source Scale

This feature lets you scale the output in accordance with the input requirements of a particular process

instrument’s response. Percent of scale works for linear-responding transmitters, or square-root responding transmitters.

Linear-Responding Transmitters

1. If necessary, press M for SOURCE mode.

2. Select a source function (m, v, h, q, t, or p) as previously described and enter a value.

3. Press the

4. Select

5. Use the numeric keypad to enter the 0% of scale value (

6. Press e.

7. Use the numeric keypad to enter the 100% of scale value(

8. Press the

Scale softkey.

% from the list.

0% Value).

100% Value).

Done softkey.

Percent of scale remains in effect until you change to another source function or press the

Scale softkey

and select another scale mode.

Square-Law Process Variables

When you select √ within scaling, the calibrator output value is the percent value entered, squared, and converted to engineering units.

1. If necessary, press M for SOURCE mode.

2. Select a source function (m, v, h, q, t, or p) as previously described.

3. Press the

4. Select

5. Use the numeric keypad to enter the 0% of scale value (

6. Press e.

7. Use the numeric keypad to enter the 100% of scale value(

8. Press e.

Scale softkey.

√ from the list.

0% Value).

100% Value).

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9. Press the Square root percent of scale remains in effect until

you change to another source function or press the

Scale softkey and select another scale mode.

Done softkey.

Stepping and Ramping the Output Value

Two features are available for adjusting the value of source functions, except pressure, which requires that you use an external pressure source:

•

Stepping the output manually with the

keys, or in automatic mode.

•

Ramping the output with optional continuity or V

trip detect.

u and d

Using Manual Step

The manual Step feature allows you to select a step

size in engineering units (mV, V, mA, °C, etc.) or % of scale. Stepping the output in % of scale is useful for quickly jumping between 0% and 100% (set step size = 100%) or 0-50-100% (set step size = 50%). Stepping works in SOURCE and in MEASURE/SOURCE modes. Proceed as follows to select a step size:

1. Refer to the appropriate “Using Source Mode” subheading earlier in this manual (e.g., “Sourcing Electrical Parameters”) and connect the calibrator to the circuit to be tested.

2. If necessary, press M for SOURCE mode.

3. Set the calibrator for the desired source value.

4. If you want to step the source value in % of scale, set the % of scale value as described previously under “Sourcing in Percent of Scale.”

5. Press the

6. Use the numeric keypad to enter the step size in the units shown on the display.

7. Press the

8. Now you can adjust the output in steps by pressing the u and d keys.

Step softkey.

Done softkey.

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Documenting Process Calibrator

Using Source Mode

Using Auto Step

To have the calibrator make a sequence of steps automatically, either once through the sequence or repetitively, proceed as follows:

1. Refer to the appropriate “Using Source Mode”

subheading earlier in this manual (e.g., “Sourcing Electrical Parameters”) and connect the calibrator to the circuit to be tested.

2. If necessary, press M for SOURCE mode.

3. Set the calibrator for the desired source value.

4. If you want to step the source value in % of scale, set the % of scale value as described previously under “Sourcing in Percent of Scale.”

5. Press the

6. Press the

Step softkey.

Auto Step softkey.

7. Select values for the following parameters as you are prompted by the display:

• Starting point (in units or % of scale)

• Ending point

• Number of steps

• Time per step

• Single shot or continuous repetition

• Ramp pattern if continuous

• Start delay

8. To start automatic stepping, press the

Start Step

softkey. The softkey label changes to Stop Step.

9. To stop automatic stepping, press the

Stop Step

softkey.

10. Press the

Done softkey to resume normal

operation.

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Ramping the Output

Ramping sweeps the source up or down in value. Use the ramp feature to check a limit switch or alarm, or any time you want a smoothly increasing or decreasing output function. You can set the calibrator to ramp up or down in engineering units

(mV, V, mA, °C, etc.) or % of scale. During ramping, the output is adjusted 4 times per

second. The size of the steps is determined by your choices of endpoints and ramp time. For example, if you set the calibrator to ramp from 1 mV to 1 V over 10 seconds, the output is adjusted in approximately 25 mV steps.

Ramping continues until the selected limit is reached, or until an optional trip condition is encountered. The optional trip detect works as follows: during ramping, the calibrator checks for either a 1 V change in dc voltage or a change in continuity status (

Short) from one ¼ second interval to the next.

Open or

Proceed as follows to ramp (i.e., sweep the source):

1. Refer to the appropriate heading earlier in this manual (e.g., “Sourcing Electrical Parameters”) and connect the calibrator to the circuit to be tested. Figure 22 shows an example.

2. To automatically stop ramping if a trip condition is detected, connect a voltage trip circuit to the V MEAS jacks or a continuity trip circuit to the mA Ω RTD MEAS jacks. (Continuity detection is not available when sourcing current.)

3. If necessary, press M for SOURCE mode.

4. Set the calibrator for the desired source value as previously described.

5. If you want to ramp the output in % of scale, set % of scale as described previously under “Sourcing in Percent of Scale.”

6. Press the

More Choices softkey.

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Documenting Process Calibrator

Using Source Mode

7. Press the

Ramp softkey. The display changes to

the following:

gj41s.eps

8. Fill in the parameters as prompted. Enter the

Start Value, End Value, and Ramp Time.

9. To automatically stop ramping if a trip condition is detected, set the

Voltage or Continuity as the trip function.

select

Trip Detect to Enabled, and

10. Press the

Done softkey. Note the RAMP

annunciator next to SOURCE at the top of the display.

11. Select a low-to-high ramp or a high-to-low ramp with the

12. To start ramping, press the

Ramp Up/Down softkey.

Start Ramp softkey.

13. Ramping continues until a trip is detected (if enabled), the ramp time expires, or you press

Stop Ramp softkey.

the

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MEAS

SOURCE

789

456

123

mA mA

RTD

SOURCE

30V

MAX

30V

MAX

DOCUMENTING PROCESS CALIBRATOR

744

SETUP

RTD

CLEAR

(ZERO)

RTD

CAT

MEAS

300V MAX

30V MAX

ENTER

Voltage Trip Detect

Trip Relay

Output

–+

Red

Input

4 – 20 mA

+–

Black

Red

Source mA

Figure 22. Checking a Relay Output Trip Alarm

Black

ot22c.eps

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Documenting Process Calibrator

Simultaneous Measure/Source

Use the MEASURE/SOURCE mode to calibrate or emulate a process instrument. Press M so that a split screen display appears as shown below.

gj42s.eps

Table 7 shows the functions you can use simultaneously when Loop Power is disabled. Table 8 shows the functions you can use simultaneously when Loop Power is enabled.

You can use the

Step or Auto Step features to adjust

the output in MEASURE/SOURCE mode, or you can use the calibration routine provided when you press

As Found softkey.

the

The following two softkeys displayed in MEASURE/SOURCE mode are for use in calibrating a process instrument.

As Found, which lets you set up a calibration

•

routine to obtain and record as found data.

Auto Step, which lets you set up the calibrator for

•

auto-stepping, as previously described.

Instructions for calibrating a process instrument follow.

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Table 7. Simultaneous MEASURE/SOURCE Functions with Loop Power Disabled

Measure Function Source Function

dc V mA Freq Ω TC RTD Pressure

dc V ••••• • • mA • ••• • • ac V ••••• • • Frequency (≥20 Hz) ••••• • • Low Frequency (<20 Hz)

Ω • ••• • •

Continuity • ••• • • TC •••• • • RTD • ••• • • 3W RTD • ••• • • 4W RTD • ••• • • Pressure ••••• •

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Documenting Process Calibrator

Simultaneous Measure/Source

Table 8. Simultaneous MEASURE/SOURCE Functions with Loop Power Enabled

Measure Function Source Function

dc V mA Freq Ω TC RTD Pressure

dc V • • • • • • mA • • • • • • ac V • • • • • • Frequency (≥20 Hz) • • • • • • TC • • • • • Pressure • •• • •

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Calibrating a Process Instrument

Note

To calibrate a HART-capable transmitter using the built-in HART interface, you use a different procedure than the one that follows. See the HART Mode Users Guide for instructions.

When the calibrator is in simultaneous MEASURE/SOURCE mode, a built-in calibration routine is activated when you press the softkey. (As Found data are the test results showing the condition of a transmitter before it is calibrated.) The calibrator runs preloaded tasks (procedures) that are developed using a host computer and compatible application software.

Generating “As Found” Test Data

The following example shows how to generate

data for a thermocouple temperature

found

transmitter. The way you set up the template for the procedure is similar for Delta-P and 1 Pt. and 2 Pt. Switch tests.

As Found

In this case the calibrator is simulating the output of a thermocouple and measuring the resulting current from the transmitter. Other transmitters use this same method. Just go back to MEASUREMENT or SOURCE mode and change the operating parameters before you press

1. Connect the test leads to the instrument under test as shown in Figure 23. The connections simulate a thermocouple and measure the corresponding output current.

2. If necessary, press M for MEASURE mode.

3. Press m.

4. Press M for SOURCE mode.

5. Press t.

6. Use the u and d keys to select the thermocouple type, then press e.

7. Enter a source value, for example 100 degrees, then e.

As Found.

Page 79

8. Press M for MEASURE/SOURCE mode. The display changes to:

gj42s.eps

9. Press the As Found softkey, followed by the

Instrument softkey. The display changes to:

Documenting Process Calibrator

Calibrating a Process Instrument

10. Enter values for 0% and 100% of 4.0 mA and

20.0 mA, respectively. Set

Tolerance to 0.5% of

span. (Use other values if necessary for your application.)

gj44s.eps

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DOCUMENTING PROCESS CALIBRATOR

744

MEAS

SOURCE

789

456

123

mA mA

V RTD

SOURCE

30V

MAX

30V MAX

Color depends

on type of TC

SETUP

RTD

CLEAR

(ZERO)

ENTER

RTD

CAT

MEAS

300V MAX

30V MAX

Red

Miniplug

Black

–+

Figure 23. Calibrating a Thermocouple Temperature Transmitter

TEST DC PWR

++–

–+

Circuit Wiring

Power

Supply

Original

ot23c.eps

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Documenting Process Calibrator

Calibrating a Process Instrument

11. If the process instrument needs more time to

settle than the calibrator’s normal settling time (about 2 seconds) at each new stimulus level, enter that time in seconds for

Delay.

12. Use the arrow keys to move the cursor down to

0% and 100% values for SOURCE

enter temperature. Our example uses 100°C and 300°C.

13. If the instrument calibration procedure requires you to enter either the measurement value or source value by hand at each step, press the

User Value softkey, for “user entered values.” Custom Units lets you define your own units such

as “PH.” See “Creating Custom Measurement Units,” earlier in this manual for an example.

When you use custom units, the w symbol appears next to the value on the display and in results.

Press the

Done softkey after you have

programmed your custom unit.

14. The

Strategy is the number of test points and

which test points are performed rising and falling

in percent of scale. Our example uses five points (0%, 25%, 50%, 75%, and 100%), rising only. Rising is indicated by the up arrow on the display. Change to another test strategy by pressing e on this line. A list of strategies appears from which to choose. Select one, then press

Done.

15. When you finish selecting the calibration parameters, the display appears as follows:

gj45s.eps

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16. Press the

Done softkey to accept the calibration

parameters. The display changes to:

17. You now have the choice of starting an automatic test or stepping through the test points manually. Press the Auto Test softkey to have the calibrator run through the tests automatically.

Abort gets you out of the calibration procedure.)

( The tests begin at the zero point, sourcing the correct temperature (a voltage) and measuring the corresponding current from the transmitter.

As soon as a measurement has settled and been

captured, the calibrator moves to the next step. Because the calibrator waits for the

gj46s.eps

measurement to stop changing, the Auto Test works correctly for instruments with built-in damping. The error of the expected measured value is shown in the top left of the measure window.

18. The calibrator moves to the remaining set of points. For temperature and electrical parameter calibration, the points are done automatically. If you are sourcing pressure, the calibrator pauses at each step for you to adjust the pressure source. When the tests are complete, an error summary table such as the following is displayed.

gj47s.eps

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Documenting Process Calibrator

Calibrating a Process Instrument

19. In the results summary test, failures are highlighted. An adjustment is required in this example because three tests show failures. The

failures were outside the ±0.5% tolerance that we selected.

20. Either press the

Abort softkey to delete the data and start

or the

Done softkey to save the data,

over. You can see the saved data entry and recall the

table for later viewing through the

Memory

softkey during normal operation. You

Review

can upload this data to a host computer running compatible application software.

Adjusting the Transmitter

Proceed as follows to make the calibration adjustments to the transmitter. (Always refer to the transmitter manufacturer’s instructions to locate the adjustment controls and connection points for your transmitter.)

1. Press the summary.

2. Press the 0% of span (100°C in this example) and displays the following softkeys:

• Go to 100%/Go to 0%

• Go to 50%

• As Left

• Exit Cal

3. Adjust the transmitter output for 4 mA then press the Go to 100% softkey.

Done softkey while viewing the results

Adjust softkey. The calibrator sources

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4. Adjust the transmitter output for 20 mA.

5. If the span was adjusted in step 4, you must go back and repeat steps 3 and 4 until no more adjustment is required.

6. Now check the transmitter at 50%. If it is within specification, your adjustment is complete. If not, adjust the linearity and begin this procedure again at step 3.

“As Left” Test Run

Proceed as follows to generate and record data for the thermocouple temperature transmitter you have just adjusted.

1. Press the

2. Press the

As Left softkey to record Auto Test softkey to begin an

automatic sequence through all the test points, or you can step through the tests manually.

3. When the tests are complete, observe the error summary table, such as the following.

as left

data.

gj48s.eps

An asterisk (*) next to a measure or source value indicates an unsettled value (g annunciator) when the measurement was taken.

4. If all the results are within specification, as they are this time, press the memory is made for

Done softkey. An entry in

as left

data.

Page 85

Test Comments

The calibrator runs tasks (custom procedures) that are developed using a host computer and compatible application software. A task may display a list of proposed comments during execution. When the comment list is displayed, select a comment to be saved with the test results by pressing the u and d keys followed by e.

Calibrating a Delta-Pressure Flow Instrument

The procedure to calibrate a √ instrument is the same as for other instruments, as just described, with the following differences:

•

Source square-root is automatically enabled

after the complete.

As Found calibration template is

Documenting Process Calibrator

Calibrating a Process Instrument

•

Measure/Source displays are in engineering

units.

•

The measurement percentage is automatically

corrected for the transmitter’s square-root response, and is used to compute instrument errors.

You select the √ instrument procedure in a menu after you press the

As Found softkey.

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Calibrating a Limit Switch

The procedure to calibrate a limit switch also uses the As Found and As Left calibration templates. Select either the procedure in a menu after you press the As Found softkey. Figure 24 defines the terminology used in calibrating limit switches.

The template to set up the limit switch procedure lets you select the following parameters:

•

Switch sense (normally open or closed).

•

For each setpoint:

•

Setpoint value.

•

Setpoint tolerance.

•

High limit or low limit.

•

Minimum deadband.

•

Maximum deadband.

1 Pt. Switch or 2 Pt. Switch

Switch B

Deadband

Process Variable

Switch A

Closed

Deadband

Switch A: Low Limit Switch B: High Limit

Open

Switch B

Closed

Switch A

Open

Switch B Setpoint

Reset

Switch A Setpoint

gj24f.eps

Figure 24. Limit Switch Terminology

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Documenting Process Calibrator

Calibrating a Process Instrument

The procedure for testing a pressure limit switch follows. The switch in this example sets at a high limit of 10 psi. The set state is a closed switch contact. For pressure switches, you use the

Manual Test

choice. For testing switches that do not require sourcing pressure, you can use the

Auto Test choice.

1. Connect the test leads between the pressure switch contact output and the mA Ω RTD (middle) jacks on the calibrator.

2. Connect the pressure module to the calibrator, and connect a pressure line to the limit switch. Leave the pressure line vented to atmosphere.

3. If necessary, press M for MEASURE mode.

4. Press q q for the continuity measure function.

5. Press M for SOURCE mode.

6. Press p for the pressure source function.

7. Press c to zero the pressure module.

8. Press M.

9. Press the

10. Highlight

As Found softkey.

1 Pt. Switch Test from the menu and

press e.

11. Press e to modify the parameters for Setpoint 1.

12. Make the following selections:

Setpoint 1 = 10.000 psi

Setpoint Type = High Set State = Short

13. Press the Done softkey.

14. Set the

15. The next parameters,

Deadband Max, are optional. Do not set them in

Tolerance to 0.5 psi.

Deadband Min and

this example.

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16. Set

Trip Function to Trip Cont by cycling through

the choices with the e key.

17. Press the

18. Press the

Done softkey. Manual Test softkey.

19. Close the pressure line vent and slowly bring the pressure up to the trip point.

20. When the switch sets, slowly bring the pressure back down until the switch resets. You can repeat this cycle as many times as you want.

21. Press the

22. Press the

S/N,

23. Press the

24. Now press the

Done softkey and view the results. Done softkey and if desired, enter Tag,

and/or ID.

Done softkey.

Adjust softkey if you want to

adjust the limit switch and test it again.

25. Use the softkeys to control the calibrator, and adjust the limit switch as necessary.

26. Press the

27. Press the

Done softkey. As Left softkey to run the test again

with the same parameters. Results from the As Found and As Left tests are saved in the calibrator memory for later viewing or uploading.

The procedure for limit switches that respond to other parameters work similarly. When you do a 2 Pt. Limit Switch Test, you simply follow the prompts on the display for testing the first switch, changing test leads, and testing the second limit switch.

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Documenting Process Calibrator

Transmitter Mode

You can set up the calibrator so that a varying input (MEASURE) controls the output (SOURCE), like a

transmitter. This is called “Transmitter mode.” In Transmitter mode, the calibrator can be temporarily used as a substitute for a defective or suspect transmitter.

wWarning

Do not use Transmitter mode in any environment that requires intrinsic safe equipment and practices.

Caution

Transmitter mode is for diagnostic purposes only. Use a fresh battery. Do not use the calibrator in place of a transmitter for extended periods.

To set up the calibrator to emulate a transmitter, proceed as follows:

1. Disconnect the control bus wires from the transmitter output (loop current or dc V control signal).

2. Connect test leads from the appropriate calibrator SOURCE jacks to the control wires in place of the transmitter.

3. Disconnect the process input (e.g., thermocouple) from the transmitter.

4. Connect the process input to the appropriate calibrator MEASURE jacks or input connector.

5. If necessary, press M for MEASURE mode.

6. Press the appropriate function key for the process input.

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7. Press M for SOURCE mode.

8. Press the appropriate function key for the control output (e.g., v or m). If the transmitter is connected to a current loop that has a power supply, select

Simulate Transmitter for the

current output choice.

9. Select a source value, e.g., 4 mA.

10. Press M for MEASURE/SOURCE mode.

11. Press

More Choices until the Transmitter Mode

softkey appears.

12. Press the

Transmitter Mode softkey.

13. Set the 0% and 100% values for MEASURE and SOURCE on the display. You can select

Linear

or √ for the transfer function.

14. Press

Done.

15. The calibrator is now in Transmitter mode. It is measuring the process input and sourcing the control signal output proportional to the input.

16. To change any of the Transmitter mode parameters, press

Change Setup, and repeat the

process in step 13.

17. To exit Transmitter mode, press the

Abort

softkey.

Page 91

Memory Operations

Saving Results

As Found/As Left test results are automatically saved at the end of each test routine. Any other time during MEASURE, SOURCE, or MEASURE / SOURCE you can press the display for later review.

Save softkey to save the data on the

Documenting Process Calibrator

Memory Operations

After you press

Save, the calibrator saves the

information on the display and shows a saved result index number, the date and time, and the percentage of memory available, as in the following display:

gj49s.eps

If you want to add information to the saved data, the calibrator has a way for you to do so. If you press the

Continue softkey, the display prompts you to enter

the instrument tag identifier ( number (

S/N), and operator name (ID), as shown in

Tag), instrument serial

the following display:

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gj50s.eps

Enter alphanumeric characters into the highlighted field with the optional bar code wand or the calibrator keys.

To enter alphanumeric characters using the calibrator keys, press ewith the cursor on the field you would like to change (for example, Tag, above). The display presents you with an alphanumeric entry window as follows:

1. Enter numbers using the numeric keypad, and letters by highlighting the desired character with the u, d, L, and R keys followed by e. Enter a space character by pressing the

Space

softkey, followed by e.

2. When the entry showing at the bottom of the window is what you want, press the

Done

softkey.

gj51s.eps

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Memory Operations

Reviewing Memory

Press the More Choices softkey until Review Memory appears, then press the Review Memory softkey to recall and view saved results.

When you press the display changes to:

Press u or d and e or the Go to Result softkey to view a saved result.

Review Memory softkey, the

gj52s.eps

Data Logging

You can record a series of measurements for later uploading to a host computer running compatible application software. You can log up to 8000 readings, depending on the reading rate, duration, and how much memory is being used for other things such as tasks or saved results. You enter the reading rate and duration in minutes as shown next.

gj53s.eps

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Proceed as follows to log data:

1. If necessary, press M for MEASURE mode.

2. Press the

3. Press the

More Choices softkey. Log softkey.

4. A list appears from which you select a reading rate (1, 2, 5, 10, 20, 30, or 60 readings per minute). Use the u or d key to select the reading rate.

5. Press e.

6. Press d to move the cursor to

Duration.

7. Use the numeric keypad to enter the duration in minutes, followed by e. The maximum duration will depend on the reading rate and how much memory is available to log data. The table below gives an estimate of the limits for duration, assuming that no memory is being used for other purposes.

Readings/Minute Maximum

Readings

1 8000 133 hours 2 8000 66 hours

5 8000 26 hours 10 8000 13 hours 20 8000 6 hours 30 7980 4 hours 60 7980 2 hours

Caution

A long logging duration can exceed the

Approximate

life of a battery charge. Use a fresh battery and the appropriate duration, or use the optional battery eliminator to avoid losing power during a logging session. If a low-battery condition occurs during a log session, the session is terminated and data collected to that point is saved.

Duration

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Memory Operations

8. After you enter your choice of duration, you can see how much memory that duration would consume. See the

Remaining Memory Used indicates the percentage of

percentage figures on the display.

Memory Used and Memory

available memory that will be used by the specified log.

Memory Remaining indicates the

percentage of memory that will remain unused after logging is complete.

9. Press the

Done softkey. The display changes to:

gj54s.eps

10. Note the LOG annunciator next to MEASURE. Press the

Start Logging softkey to start taking

data.

11. The calibrator will continue storing data points until the duration has elapsed, or until you press

Done softkey. Either way of terminating

the logging causes the calibrator to save the data as a memory item that can be uploaded to a host computer running compatible application software.

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Users Manual

Recording Min and Max Measurements

You can set the display to record and show the maximum and minimum readings. Min and Max readings are always undamped, even if Dampen is On. Press the

Min Max softkey to turn on this feature. Press the

the c key to reset the Min Max registers. Press the

Min Max softkey again to revert to the normal display.

The following figure shows the display with Min Max on:

More Choices softkey twice, then press

gj55s.eps

Running a Preloaded Task

Press the More Choices softkey until the Tasks softkey appear, then press Tasks to view the list of tasks (procedures) downloaded from a host computer. Tasks are calibrator configurations, saved with a procedure name, for example the type and manufacturer of a specific transmitter. A task configures the calibrator for transmitter calibration with all the calibration parameters (source and measure functions, 0% and 100% levels, test strategy) predefined.

While the task is controlling the calibrator, the

Continue softkey becomes Continue Task.

Clearing Memory

In Setup mode, highlight the Clear Memory choice and press e to clear all the memory:

•

Saved results

•

Min Max data

•

Log data sets

A confirmation message appears so that you do not inadvertently erase the memory.

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Documenting Process Calibrator

Using the Built-in Calculator

For solving mathematical equations that involve the

calibrator’s source or measured value, you can use the calibrator’s built-in calculator. The present measure and source values, including units, are always available to be inserted into an equation at a single keystroke. The calibrator keeps measuring and sourcing during calculator operation.

Start the calculator from the SOURCE, MEASURE, or MEASURE/SOURCE mode by pressing the softkey. You may have to press More Choices to get

Calc softkey.

the After you press

Calc, the display, number keys, and

keys with calculator functions (L, R, u, d, rand e) become an algebraic-entry calculator.

Done when you want to resume normal

Press calibrator operation.

Calc

Saving to and Recalling from the Registers

When the calibrator is in calculator mode, the top half of the display shows three register names and their contents:

MEASURE (the present measured value)

•

SOURCE (the present sourced value)

•

Insert the contents of any register into a calculation by pressing the for the desired register.

Store to copy the number from the calculator

Press display (lower half) into save the number for later use, or into

Recall softkey followed by the softkey

SOURCE.

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Using the Calculator to Set the Source Value

When you store to SOURCE, the calibrator presents you with a choice of unit multipliers when appropriate (e.g., mV or V), then starts sourcing that value. The calibrator ignores attempts to store out-of-range values to

SOURCE.

Quick Guide to Applications

The following figures show test lead connections and which calibrator function to use for many different applications.

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DOCUMENTING PROCESS CALIBRATOR

744

Measure V

Documenting Process Calibrator

Quick Guide to Applications

DOCUMENTING PROCESS CALIBRATOR

744

MEAS

SOURCE

Red

0 to 1V dc

Input

789

456

123

mA mA

RTD

SOURCE

30V

MAX

30V MAX

RTD

CAT

MEAS

30V

MAX

Black

Figure 25. Calibrating a Chart Recorder

SETUP

RTD

CLEAR

(ZERO)

MEAS

Red

Circuit

ENTER

300V

MAX

250

Ω

Black

SOURCE

789

456

123

mA mA

RTD

SOURCE

30V

MAX

30V MAX

ot25c.eps

SETUP

RTD

CLEAR

(ZERO)

ENTER

RTD

CAT

MEAS

300V

MAX

30V MAX

ot26c.eps

Figure 26. Measuring Voltage Drop

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Users Manual

V RTD

30V MAX

DOCUMENTING PROCESS CALIBRATOR

744

MEAS

SOURCE

789

456

123

mA mA

RTD

CAT

SOURCE

MEAS

30V

MAX

Measure V

SETUP

RTD

CLEAR

(ZERO)

ENTER

300V

MAX

30V MAX

RED

BLACK

ot27c.eps

Figure 27. Monitoring AC Line Voltage and Frequency

Fluke 744 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

LIMITED WARRANTY & LIMITATION OF LIABILITY

Table of Contents

List of Tables

List of Figures

Introduction

Standard Equipment

Safety Information

Getting Started Exercise

Operating Features

Input and Output Jacks

Keys

Display

Setting Up the Calibrator

Using the Strap and Bail

Charging the Battery

Battery Life

Preserving Battery Life

Using the Optional Battery Eliminator

Selecting the Display Language

Adjusting the Display Contrast

Displaying the Date and Time

Using the Backlight

Personalizing the Calibrator

Using Measure Mode

Measurement Ranges

Measuring Electrical Parameters

Testing Continuity

Measuring Pressure

Measuring Temperature

Using Thermocouples

Using Resistance-Temperature Detectors (RTDs)

Measurement Scale

Linear-Output Transmitters

Square-Law Process Variables

Measuring or Sourcing with Custom Units

Using the 700-IV Current Shunt

Damping Your Measurements

Using Source Mode

Sourcing Electrical Parameters

Simulating a 4 to 20 mA Transmitter

Supplying Loop Power

Sourcing Pressure

Simulating Thermocouples

Simulating RTDs

Source Scale

Linear-Responding Transmitters

Square-Law Process Variables

Using Manual Step

Using Auto Step

Ramping the Output

Simultaneous Measure/Source

Calibrating a Process Instrument

Generating “As Found” Test Data

Adjusting the Transmitter

“As Left” Test Run

Test Comments

Calibrating a Delta-Pressure Flow Instrument

Calibrating a Limit Switch

Transmitter Mode

Memory Operations

Saving Results

Reviewing Memory

Data Logging

Recording Min and Max Measurements

Running a Preloaded Task

Clearing Memory

Using the Built-in Calculator

Saving to and Recalling from the Registers

Using the Calculator to Set the Source Value

Quick Guide to Applications