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 Fluke 789 features that are also included in the Fluke 787 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
