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Fluke 789 User Manual

Fluke 789
50 pages
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789/787B
ProcessMeter™
Users Manual
August 2002, Rev. 4, 1/17
© 2002-2017 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.

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Fluke 789 Specifications

General IconGeneral
TypeProcessMeter
DC Voltage Range0 to 1000 V
AC Voltage Range0 to 1000 V
Loop Current0 to 24 mA
Resistance Range0 to 4000 Ω
DisplayLCD
Safety RatingCAT III 1000 V, CAT IV 600 V
Operating Temperature-20 °C to 55 °C
Storage Temperature-40 °C to 60 °C
ContinuityYes
Diode TestYes
Loop Power24 V
Pressure RangeNot applicable
Power Source4 AA batteries
Dimensions203 x 100 x 50 mm
Weight0.6 kg
Temperature RangeNot applicable

Summary

Limited Warranty and Liability

Introduction to the ProcessMeter

Contacting Fluke Support

Safety Information

Getting Started with the Meter

Getting Acquainted with the Meter

Measuring Electrical Parameters

Input Impedance

Specifies the input impedance for voltage measurement functions, typically 10 MΩ.

Understanding Measurement Ranges

Explains how measurement ranges affect resolution and accuracy, and how auto-ranging works.

Testing Diodes

Details the procedure for testing a single diode using the meter's functions.

Displaying Minimum, Maximum, and Average

Using AutoHold Functionality

Compensating for Test Lead Resistance

Using the Current Output Functions

Simulate Mode Operation

Changing the Current Span Setting

Producing a Steady mA Output

Manually Stepping the mA Output

Auto Ramping the mA Output

Power-Up Options Configuration

Loop Power Supply Mode (789 only)

Battery Life and Preservation

Basic Meter Maintenance

Meter Calibration Procedures

Replacing the Batteries

Replacing a Blown Fuse

Troubleshooting Meter Issues

Replacement Parts and Accessories

Technical Specifications

DC Volts Measurement Specifications

Details the accuracy, resolution, and input impedance for DC voltage measurements.

DC Millivolts Measurement Specifications

Details the accuracy and resolution for DC millivolt measurements.

AC Volts Measurement Specifications

Details accuracy, resolution, and AC conversion for AC voltage measurements.

AC Current Measurement Specifications

Details accuracy, resolution, and burden voltage for AC current measurements.

DC Current Measurement Specifications

Details accuracy, resolution, and burden voltage for DC current measurements.

Ohms Measurement Specifications

Details accuracy, resolution, and measurement current for resistance measurements.

Frequency Counter Accuracy

Provides accuracy specifications for the frequency counter function.

Frequency Counter Sensitivity

Specifies the minimum sensitivity required for frequency counter measurements.

Diode Test and Continuity Test Specifications

Details the specifications for diode test and continuity test functions.

Loop Power Supply Voltage Specifications

Specifies the voltage and protection details for the loop power supply.

DC Current Output Specifications

Details span, accuracy, and compliance voltage for DC current output modes.

General Specifications

Covers general operating conditions, environmental limits, size, weight, and safety ratings.

Electromagnetic Compatibility (EMC)

Information on EMC compliance and standards relevant to the meter's operation.

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