Fluke 789 ProcessMeter with Fluke Connect The Fluke 789 ProcessMeter combines a loop calibrator and a digital multimeter in one rugged instrument for engineers and technicians testing and troubleshooting process control loops. It sources and measures 4 to 20 mA, supplies 24 V loop power, adds temperature sensing and wireless data logging via Fluke Connect, and carries a built-in variable 250 Ohm HART resistor so you can work without a separate add-on. Brand and standards Fluke is one of the most trusted names in electrical test and measurement, and Powerpoint Engineering is an authorised Fluke distributor in Ireland. The 789 is built for everyday work on industrial process loops, pairing multimeter accuracy with the loop-sourcing and simulation features a calibration job needs. As an authorised distributor, Powerpoint also calibrates Fluke instruments in its own laboratory and issues traceable certificates. Applications The 789 suits process calibration, commissioning and fault-finding across industrial sites: Sourcing 4 to 20 mA to simulate sensors and transmitters Supplying 24 V loop power for testing loops without a separate supply Working with HART devices using the built-in variable 250 Ohm resistor Multimeter measurement and temperature sensing during troubleshooting Wireless data logging and sharing readings through Fluke Connect Specifications Specification Fluke 789 Instrument type Loop calibrator and digital multimeter mA sourcing 4 to 20 mA for sensor simulation Loop power supply 24 V mA source drive 1200 Ohm on mA power source HART resistor Built-in variable 250 Ohm Display Large dual display, backlight with two brightness settings Connectivity Infrared port, Fluke Connect wireless logging What's in the box Fluke 789 ProcessMeter AC175 alligator clips TL71 safety-designed test lead set Four AA 1.5 V alkaline batteries (installed) FAQs Does the Fluke 789 work as both a calibrator and a multimeter? Yes. The 789 is a loop calibrator and a digital multimeter in one unit. It sources and measures 4 to 20 mA, supplies 24 V loop power and simulates sensors, while also providing multimeter measurement and temperature sensing for general troubleshooting. Do I need a separate resistor for HART communication? No. The 789 has a built-in variable 250 Ohm HART resistor, so you can connect a HART communicator without carrying or wiring in a separate resistor. That keeps the loop tidy and saves a step on site. Can Powerpoint Engineering calibrate my Fluke 789? Yes. Our in-house calibration and repair laboratory services Fluke process tools and issues traceable certificates. Speak to our calibration team to book your instrument in. To see related instruments, view our range of field process calibrators, or talk to our team about calibration and training for your equipment.