Description
Fluke 773 Milliamp Process Clamp Meter Repair and Calibration
The Fluke 773 is a milliamp process clamp meter — it measures and sources 4–20 mA loop current, including a non-invasive mA clamp that reads loop current without breaking the circuit, for calibrating and troubleshooting process loops. Its precision lies in the mA measurement/source and the clamp sensor, which is where service and calibration focus.
June Company repairs and calibrates the Fluke 773 for instrument-calibration and process technicians.
Common Fluke 773 problems we fix
- mA measure/source out of spec — the 4–20 mA measurement and source drifting, recalibrated against standards.
- Clamp won’t read loop current — the non-invasive mA clamp sensor faulty, repaired.
- Loop-power / 24V output faults — the loop-supply function, restored.
- Display or battery faults.
- Input protection blown — after a miswire, repaired.
FAQs
My mA clamp won’t read — fixable? Yes. The clamp sensor and mA circuitry are repairable, then recalibrated so measure, source, and clamp readings are accurate, with a NIST-traceable certificate.
Is the source function verified? Yes — mA source and measure are both checked against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.




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