Fluke 744 User Manual

®
744
Documenting Process Calibrator
Users Manual
PN 691287
September 1998 Rev.1, 2/99
© 1998,1999 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.

Fluke 744 Specifications

General

HART Communication	Yes
Interface	RS-232
Current Measurement Range	0 to 24 mA DC
Operating Temperature	-10 °C to 55 °C
Storage Temperature	-20°C to 60°C
Weight	1.4 kg
Functionality	Calibrator
Measurement Functions	Voltage, Current, Resistance, Frequency, Temperature
Source Functions	Voltage, Current, Resistance, Frequency, Temperature
Loop Power	24 V
Display	LCD with backlight
Power Supply	Rechargeable Ni-MH battery pack
Frequency Range	1 Hz to 10 kHz
RTD Simulation/Measurement	Supported
Thermocouple Simulation/Measurement	Supported
Pressure	Optional pressure modules available
Voltage Measurement Accuracy	±0.01% of reading
Current Measurement Accuracy	±0.01% of reading

Summary

Standard Equipment

Safety Information

Operating Features

Input and Output Jacks

Describes the purpose and use of each connector on the calibrator.

Keys and Controls

Explains the function of each button and key on the calibrator's interface.

Display Information

Details the elements and indicators shown on the calibrator's screen.

Setting Up the Calibrator

Charging the Battery

Guidance on how to charge the calibrator's battery pack before first use.

Battery Life Management

Information on battery performance, life, and preservation techniques.

Display and Language Configuration

Steps for selecting display language, contrast, and date/time settings.

Using Measure Mode

Measuring Pressure

How to connect and use pressure modules for measurement.

Measuring Temperature

Using Source Mode

Simulating a 4 to 20 mA Transmitter

Configuring the calibrator to act as a 4-20mA transmitter.

Supplying Loop Power

How to provide loop power for two-wire transmitters.

Sourcing Pressure

Using the calibrator with a pressure source to simulate pressure signals.

Simulating Thermocouples

Generating thermocouple signals for calibration.

Simulating RTDs

Generating RTD signals for calibration.

Stepping and Ramping the Output Value

Simultaneous Measure/Source

Calibrating a Process Instrument

Generating “As Found” Test Data

Recording the instrument's condition before calibration.

Adjusting the Transmitter

Steps to adjust the transmitter's output during calibration.

“As Left” Test Run

Recording the instrument's condition after calibration.

Calibrating a Delta-Pressure Flow Instrument

Specific steps for calibrating flow instruments with square-root output.

Calibrating a Limit Switch

Transmitter Mode

Using the Built-in Calculator

Maintenance

In Case of Difficulty

Troubleshooting steps for common operational problems.

Service Center Calibration or Repair

Specifications

Temperature Measurement (Thermocouples)

Accuracy specifications for thermocouple temperature measurements.

Temperature Measurement (RTDs)

Accuracy specifications for RTD temperature measurements.