Description
Fluke 709 Loop Calibrator Repair
The Fluke 709 is a precision loop calibrator — it sources, simulates, and measures 4–20 mA loops (with loop power), with a precision quick-set control and high accuracy, to calibrate and troubleshoot process transmitters and loops. Its accuracy depends on the mA source/measure circuitry, which is where service and calibration focus.
FlukeMeterRepair.com repairs and calibrates the Fluke 709 for instrument and process-control technicians.
Common Fluke 709 problems we fix
- mA source / measure out of spec — the current source or measurement drifting, recalibrated against standards.
- Quick-set control faults — the setting control not adjusting output correctly, repaired.
- Loop-power faults — the loop-supply function not driving the loop, repaired.
- Display faults — missing segments or dim display, repaired.
- Battery or terminal faults.
FAQs
My 709 sources the wrong mA — fixable? Yes. Source/measure faults are repairable, then the calibrator is recalibrated so its mA output and measurement are accurate, with a NIST-traceable certificate.
Is the source verified? Yes — source and measure are checked against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or request service.






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