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741B/743B

Users Manual

56

TC

mA mA

V

V

RTD

RTD

SOURCE

300V

MAX

30V

MAX

30V

MAX

30V

MAX

MEAS

CAT

RTD

Transmitter

-PS

+PS

M

-IN

+IN

S

Z

Red

Black

gj21f.eps

Figure 21. Connections for Simulating an RTD

Table of Contents

Table of Contents3
Introduction11
Summary of Source and Measure Functions12
Standard Equipment14
Safety Information17
Getting Started Exercise20
Operating Features22
- Input and Output Jacks22
- Input/Output Jacks and Connectors22
- Keys24
Key Functions25
- Display27
Setting up the Calibrator29
- Using the Strap and Bail29
- Charging the Battery30
- Battery Life32
- Preserving Battery Life33
- Using the Optional Battery Eliminator33
- Selecting the Display Language34
- Adjusting the Display Contrast34
- Displaying the Date and Time34
- Using the Backlight36
- Personalizing the Calibrator36
Using Measure Mode38
- Measurement Ranges38
- Measuring Electrical Parameters38
- Testing Continuity40
- Measuring Pressure40
- Measuring Temperature44
  - Using Thermocouples44
Thermocouple Types Accepted45
- Using Resistance-Temperature Detectors (Rtds)47
RTD Types Accepted47
- Measurements in Percent of Scale51
  - Linear-Output Transmitters51
  - Square-Law Process Variables51
- Customizing MV Input Units52
- Damping Your Measurements53
Using Source Mode54
- Sourcing Electrical Parameters54
- Simulating a 4 to 20 Ma Transmitter56
- Supplying Loop Power58
- Sourcing Pressure60
- Simulating Thermocouples63
- Simulating Rtds64
- Sourcing in Percent of Scale67
  - Linear-Responding Transmitters67
  - Square-Law Process Variables67
- Stepping and Ramping the Output Value68
Simultaneous Measure/Source73
Simultaneous MEASURE/SOURCE Functions with Loop Power Disabled74
Simultaneous MEASURE/SOURCE Functions with Loop Power Enabled75
Generating "As Found" Test Data76
- Adjusting the Transmitter81
- As Left" Test Run82
- Test Comments83
- Calibrating a Delta-Pressure Flow Instrument83
- Calibrating a Limit Switch84
Calibrating a Process Instrument76
Transmitter Mode87
Memory Operations89
- Saving Results89
- Reviewing Memory91
- Data Logging (Model 743B Only)91
- Recording Min and Max Measurements94
- Running a Preloaded Task (743B Only)94
- Clearing Memory94
Using the Built-In Calculator95
- Saving to and Recalling from the Registers95
- Using the Calculator to Set the Source Value96
Quick Guide to Applications96
Communicating with a PC (Model 743 Only)106
Maintenance106
- Replacing the Battery Pack106
- Internal Lithium Backup Battery107
- Cleaning the Calibrator107
- Calibration Data107
- In Case of Difficulty107
- Service Center Calibration or Repair108
- Replacement Parts109
Accessories110
Specifications112
- DC Voltage Measurement113
- AC Voltage Measurement114
- DC Current Measurement115
- Resistance Measurement115
- Continuity Testing116
- Frequency Measurement116
- DC Voltage Output117
- DC Current Output118
- Resistance Sourcing119
- Frequency Sourcing120
- Temperature, Thermocouples121
- Temperature, Resistance Temperature Detectors124
- Loop Power Supply126
- Top and Bottom Limits of Ranges with Auto Range on127
- General Specifications129
Index131

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