Description
Fluke 5790B AC Measurement Standard Repair
The Fluke 5790B is an AC measurement standard — the current-generation primary-lab AC/DC transfer standard that measures AC voltage with very low uncertainty to characterize calibrators and AC sources. Its precision lives in the thermal transfer / measurement circuitry and the internal reference, which is where service and calibration focus.
FlukeServiceCenter.com repairs and calibrates the Fluke 5790B for national metrology institutes, primary calibration laboratories, and military standards labs.
Common Fluke 5790B problems we fix
- Voltage-reference / resistance-standard drift — the reference out of spec, recalibrated against standards.
- Measurement accuracy out of spec — AC measurement drifting beyond standard-grade spec, recalibrated.
- Input / transfer-circuit faults — the measurement input or transfer path not reading correctly, repaired.
- Won’t communicate — the remote interface, repaired.
- Power-supply or display faults.
FAQs
My 5790B is out of spec — fixable? Yes. Input and reference faults are repairable, then the standard is recalibrated against our standards so its AC measurement is accurate, with a NIST-traceable certificate.
Is it verified? Yes — 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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