Description
Fluke 5520A Calibrator Repair
The Fluke 5520A is a multiproduct calibrator — a metrology-grade source that generates precise voltage, current, resistance, capacitance, frequency, and temperature signals (with broader coverage than the 5500A) to calibrate a wide range of meters and instruments. Its faults concentrate in the internal reference, the source/output stages, and the range/function switching.
FlukeMeterRepair.com repairs and calibrates the Fluke 5520A for calibration labs and metrology teams.
Common Fluke 5520A problems we fix
- Output-accuracy / reference drift — the reference or an output stage drifting, which compromises every cal it performs, recalibrated against standards.
- A function out of spec — a specific output (V, I, R, C, etc.) drifting, repaired and recalibrated.
- Range / function switching faults — the output routing/relays, restored.
- A function dead — an output path failed, often after a miswire, repaired.
- Communication or display faults.
FAQs
My 5520A drifted or a function is dead — fixable? Yes. Reference, output-stage, and switching faults are repairable, then every function is recalibrated against our standards so the instruments it calibrates are trustworthy, with a NIST-traceable certificate.
Are all functions verified? Yes — each output function is checked against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or request service.




Sally M. –
Our Fluke 5520A started bringing up high voltage errors and TC port errors. We found June Company and they were great at explaining in detail the proposed work they were going to do and after they repaired the calibrator they sent a repair report. Pretty quick too!