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The precision 1000-V, 440-mA digital multimeter is designed to meet 1000-V IEC 1010 CAT III standards. The Fluke 789 key features include 24-V loop power supply, HART mode setting with loop power (adds selectable 250 ohm resistor), 1200 ohm drive capability on mA source and 0-100% mA span check buttons to toggle between 4 and 20 mA. Use it to measure AC and DC volts with 0.05% accuracy. The process meter provides simultaneous mA and % of scale readout, True RMS AC voltage measurement and frequency measurement to 20 kHz. It offers min/max/average/hold/relative modes, diode test, continuity beeper and 20-mA DC current source/loop calibrator/simulator. You also get manual step (100%, 25%, coarse and fine) plus auto step and auto ramp. The display is double the size and twice as bright with two levels of backlighting for easy reading in the worst lighting conditions.
This process meter provides voltage overload protection on V, ohms, frequency and mA (backed-up by 440 mA 1000 V fuse). Externally accessible fuses and battery can be easily replaced. The Fluke 789 includes TL71 premium test lead set, alligator clips, 4 x AA alkaline batteries (installed) and user's manual.
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