Process Calibrator Fluke 789

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.

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Features of the Fluke 789

  • 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
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 Ω @ 20 mA
Frequency
 to 19.999 kHz, 0.005% + 1 LSD
Continuity
 Beeps for resistance < 100 Ω
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 MΩ, 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
Overvoltage category
 IEC 1010-1 CAT III 1000 V
 IEC 1010-1 CAT IV 600 V
Maximum voltage
 1000 V rms
Mechanical & General Specifications
Size
 50 x 100 x 203 mm (1.25″ H x 3.41″W x 7.35″ L)
Weight
 610 g (1.6 lbs)
Batteries
 4 AA Alkaline batteries
Warranty
 3 years
Battery Life
 140 hours typical (measurement), 10 hours typical (sourcing 20 mA)
Shock & Vibration
 Random, 2 g, 5-500 Hz
 1 meter drop test

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