The Fluke 787 was the first tool to combine a DMM and a loop calibrator to give process technicians double the power in one tool. Now itﾒs even better, the range is extended with the new Fluke 789 ﾖ the ultimate loop calibration multimeter. The Fluke 789 has a 24-Volt loop supply reducing the need for taking a separate power supply when doing offline transmitter testing. And with its built-in, selectable 250-Ohm Hart® resistor, it also eliminates the need to carry a separate resistor with you. Now process technicians can do a lot more while carrying a lot less.
Features
24 V Loop power supply
Very large dual display
Enhanced backlight with 2 brightness settings
1200 Ohm drive capability on mA source
HART mode setting with loop power and a built-in 250 ohm resistor
0% and 100 % buttons to toggle between 4 and 20 mA sourcing for a quick span check
Externally accessible fuses for easy replacement
Infrared-port to process data in FlukeView Forms (V2.1) software
Precision 1000 V, 440 mA True-RMS digital Multimeter
0.1% dc voltage accuracy
0.05% dc current accuracy
Frequency measurement to 20 kHz
Min/Max/Average/Hold/Relative modes
Diode Test and Continuity Beeper
Simultaneous mA and % of scale readout
20 mA DC current source / loop calibrator / simulator
Manual Step (100%, 25%, Coarse, Fine) plus Auto Step and Auto Ramp
Externally accessible battery for easy battery changes
Safety Conformance
Meets 1000 Volt EN61010-1 CAT III standards and 600 Volt EN61010-1 CAT IV standards.
Specifications
Current Measurement
Range:
0-1 A AC or DC
Resolution:
1 mA
Accuracy:
0.2% + 2 LSD (DC)
Range:
0-30 mA
Resolution:
0.001 mA
Accuracy:
0.05% + 2 LSD
Current Sourcing
Range:
0-20 mA or 4-20 mA
Resolution:
0.05% of span
Drive Capability:
24 V Compliance or 1200 O @ 20 mA
Frequency
to 19.999 kHz, 0.005% + 1 LSD
Continuity
Beeps for resistance < 100 O
Voltage measurement
Range:
0-1000 V AC (true-rms) or DC
Resolution:
0.1 mV to 1.0 V
Accuracy:
0.1% Rdg + 1 LSD (VDC)
Resistance measurement
to 40 MO, 0.2% + 1 LSD
Diode test
2.0 V shows diode voltage drop
Display current and % of span
Yes
Auto step, auto ramp
Yes
Environmental Specifications
Operating Temperature
-20 ºC to 55 ºC
Storage Temperature
-40 ºC to 60 ºC
Humidity (Without Condensation)
95% up to 30 ºC
75% up to 40 ºC
45% up to 50 ºC
35% up to 55 ºC
Temperature Coefficient
0.05 x (specified accuracy) per ºC (for temperatures < 18 ºC or > 28 ºC)
Safety Specifications
Electrical Safety
Designed in accordance with IEC 1010-1, ANSI/ISA S82.01-1994 and CAN/CSA C22.2 No. 1010.1-92
