Fluke 789

Fluke Process Meter
Description

 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