Description
Fluke 1621 Earth Ground Tester Repair
The Fluke 1621 is an earth ground resistance tester (GEO) — it measures earth/ground electrode resistance using the fall-of-potential method (with test stakes) for grounding-system verification. Its accuracy depends on the measurement front-end, the stake inputs, and the reference, which is where service and calibration focus.
FlukeMeterRepair.com repairs and calibrates the Fluke 1621 for electrical, utility, and grounding-test teams.
Common Fluke 1621 problems we fix
- Ground-resistance / soil-resistivity measurement out of spec — measurement drift, recalibrated against standards.
- Stake / input faults — a damaged test input giving erratic results, repaired.
- A function dead — a measurement path failed, repaired.
- Display or interface faults — repaired.
- Won’t power on or hold a charge — battery/power faults.
FAQs
My 1621 ground reading is off — fixable? Yes. Measurement and input faults are repairable, then the tester is recalibrated so ground-resistance readings are accurate, with a NIST-traceable certificate.
Is the measurement 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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