Product overview:
Fluke 789 ProcessMeter™ doubles your troubleshooting power
The Fluke 789 ProcessMeter is the ultimate troubleshooting tool for electricians and instrumentation professionals. It combines the functionality of a full-featured loop calibrator with the power of a CAT III 1000 V, CAT IV 600 V safety rated digital multimeter, and the wireless capabilities of Fluke Connect connectivity with optional IR3000FC module. The 789 has a large, dual display with two levels of backlighting and externally accessible fuse and batteries for easy replacement. And its built-in, selectable 250-ohm HART® resistor eliminates the need to carry a separate resistor.
The 789 also has a built-in 24-Volt loop supply, which reduces the need to carry a separate power supply when doing offline transmitter testing. You can also add the wireless data logging capabilities of the Fluke Connect™ mobile app to log data wirelessly to your smart phone and review it from a remote location.
*Requires Fluke IR3000FC module (not included). Not all models are available in all countries. Check with your local Fluke representative.
Do a lot more while carrying a lot less
The 789 provides all standard DMM capabilities including frequency measurement to 20 kHz, Min/Max/Average/Hold/Relative modes, and diode test and continuity beeper. Combine that with the ability to troubleshoot every part of the loop.
Measure, source, simulate 4-20 mA signals, measure resistance, measure power, provide power to the loop and provide 250-ohm resistance to the loop. The 789 includes SpanCheck; 0% and 100% buttons to toggle between 4 and 20 mA sourcing, while the display can simultaneously show mA and % of scale readings for faster troubleshooting. It also delivers 1200-ohm drive capability on mA source.
Accuracy
This ProcessMeter offers manual step, 100%, 25%, Coarse, Fine, plus auto step and auto ramp. It also delivers 0.1% DC voltage accuracy and 0.05% DC current accuracy.
Specifications:
| 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 shoes diode voltage drop | |
| Display current and % of span | Yes | |
| Auto Step, Auto Ramp | Yes | |
| Environmental Specifications | ||
| Operating temperature | -20°C to 55°C | |
| Storage temperature | -40°C to 60°C | |
| Humidity (without condensation) | 95% up to 30°C 75% up to 40°C 45% up to 50°C 35% up to 55°C |
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| Temperature coefficient | 0.05 x (specified accuracy) per °C (for temperatures < 18°C or > 28°C) | |
| 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 |
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| Maximum voltage | 1000 V RMS | |
| Mechanical and General Specifications | ||
| Size (H x W x L) | 50 x 100 x 203 mm (1.25 x 3.41 x 7.35 in) | |
| 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 and vibration | Random, 2 g, 5-500 Hz 1 meter drop test |
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