Process Meter

The Fluke 789 has a 24-volt loop power supply, thereby reducing the need to power transmitters with external auxiliary power during on-site calibration.

And thanks to its built-in, switchable 250-ohm Hart® resistor, you no longer need to carry a separate resistor for calibrating Hart instruments.

For the process technician, this means: achieving more with a modern tool while carrying less.

functions

• 24V loop power supply
• Very large dual display
• Improved backlighting with two brightness levels
• Supplying 20 mA to instruments with a load up to 1200 ohms
• Calibration mode for HART instruments with loop power supply and switched-on 250-ohm resistor
• 0% and 100% buttons to switch between 4 and 20 mA (give) for quick checks of the start and end values of the measuring range ("Span Check").
• Externally accessible fuses for easy replacement
• High-quality true RMS digital multimeter (1000 V, 440 mA)
• Basic accuracy of 0.1% at DC voltage
• Basic accuracy of 0.05% at direct current
• Frequency measurements up to 20 kHz
• Operating modes: Min/Max/Average/Hold/Relative value
• Diode test and continuity buzzer
• Simultaneous display of the measured value in mA and % of the measuring range
• 20 mA DC encoder / current loop calibrator / simulator
• Manual step function (100%, 25%, coarse, fine) as well as automatic step and ramp function
• Externally accessible battery for easy battery replacement

Safety Conformance

Complies with standard EN61010-1 CAT. III 1000 Volt, EN61010-1 CAT. IV 600
Volt.