Fluke 787B Specifications
TECHNICAL DATA
Fluke 787B and
789 ProcessMeter
KEY DMM MEASUREMENTS
Measure ac and dc volts, ac and dc
current, resistance, continuity, and
frequency
KEY mA LOOP FUNCTIONS
20mA current source/simulate,
simultaneous mA and % scale readout,
and 24 V loop power supply (789 only)
™
Double the troubleshooting power so you can do
more, while carrying a lot less
The Fluke 787B and 789 ProcessMeter™ double troubleshooting capabilities by combining the power of a safety rated digital
multimeter and mA loop calibrator into a single, compact test tool.
Whether you only need to source and simulate mA, or need a 24V
loop power supply, Fluke has a ProcessMeter™ test tool designed
specifically to meet your needs. Based on the trusted measurement capabilities of the Fluke 87 DMM, the 787B and 789 add the
ability to measure, source and simulate mA with the accuracy and
resolution you would expect from a Fluke mA loop calibrator, giving
you the ideal tool for troubleshooting and calibrating current loop
applications.
With Fluke Connect® mobile app and desktop software compatibility technicians can wirelessly monitor, log, and share data from the
field with their team anytime, from anywhere*.
787B and 789 key features
• 20 mA dc current source/measure/simulate
• Simultaneous mA and % of scale readout
• DMM designed to meet 1000 volt IEC 61010
CAT III and 600 V CAT IV standards
• Fluke Connect
(with IR3000FC module)*
®
compatibility for wireless data logging
• Precision 1000 V, 440 mA true-rms digital multimeter
• Frequency measurement to 20 kHz
• Min/Max/Average/Hold/Relative modes
• Diode test and continuity beeper
• Manual step (100 %, 25 %, Coarse, Fine) plus Auto Step and
Auto Ramp
• Externally accessible battery for easy battery changes
789 additional features
• 24 V Loop power supply
• HART mode setting with loop power (adds 250 ohm resistor)
SAFETY RATED FOR INDUSTRIAL
APPLICATIONS
CAT IV 600 V/CAT III 1000 V
*Requires Fluke IR3000FC module (not included)
Not all models are available in all countries. Check with your local Fluke representative.
Measurement function Range and resolution Best accuracy
(% of reading + LSD)
V dc 400.0 mV, 4.000 V, 40.00 V, 400.0 V,
0.1 % + 1
1000 V
V ac (true-rms) 400.0 mV, 4.000 V, 40.00 V, 400.0 V,
0.7 % + 2
1000 V
mA dc 30.000 mA .05 % + 2
A dc 1.000 A (0.440 A continuous) 0.2 % + 2
A ac 1.000 A (0.440 A continuous) 1 % + 2
Resistance 400.0 Ohms, 4.000 k, 40.00 k,
0.2 % + 1
400.0 k, 4.0 M, 40 M
Frequency
199.99 Hz, 1999.9 Hz, 19.999 kHz .005 % + 1
(0.5 Hz to 20 kHz)
Diode test 2.000 V (shows diode voltage drop) 2 % + 1
Continuity Beeps for resistance < approx. 100
ohms
Output function Range and resolution Drive capability Accuracy
(% of span)
DC current output
(Internal battery operation)
0.000 to 20.000 mA or 4.000 to
20.000 mA, (selectable at power-up)
24 V compliance or, 1,200 ohms,
@ 20 mA
.05 %
Over-range to 24.000 mA
DC current simulate
(Ext. 15 V to 48 V loop supply)
0.000 to 20.000 mA or 4.000 to
20.000 mA, (selectable at power-up)
1000 ohms, @ 20 mA .05 %
Over-range to 24.000 mA
24 V loop supply* Minimum 24 V 250 ohms @ 20 mA > 24 V
Current adjustment modes Manual: Coarse, Fine, 25 % and
100 % step
Automatic: Slow Ramp, Fast Ramp,
25 % step
Temperature range of 18 °C to 28 °C, for one year after calibration
*24 V Loop Supply available on 789 ProcessMeter™ only
General specifications
Maximum voltage applied between any
1000 V RMS
jack and earth ground
Storage temperature -40 °C to 60 °C
Operating temperature -20 °C to 55 °C
Temperature coefficient 0.05 x (specified accuracy) per °C (for temperatures < 18 °C or > 28 °C)
Relative humidity 95 % up to 30 °C; 75 % up to 40 °C; 45 % up to 50 °C; 35 % up to 55 °C
Vibration Random, 2 g, 5-500 Hz
Shock 1 meter drop test
Safety IEC61010-1, Pollution Degree 2/IEC61010-2-033, CAT IV 600 V/CAT III 1000 V
Size (HxWxL) 50 mm x 100 mm x 203 mm (1.97 in x 3.94 in x 8.00 in)
Weight 600 g (1.3 lbs)
Battery: Four AA alkaline batteries
Battery life 140 hours typical (measurement), 10 hours typical (sourcing 12 mA)
Warranty Three years
2 Fluke Corporation Fluke 787B and 789 ProcessMeter
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