Description
Fluke 1621 Earth Ground Tester Repair and Calibration
The Fluke 1621 is an earth ground resistance tester — it measures the resistance of earth/grounding electrodes and systems using the fall-of-potential method for verifying grounding installations. As a field-carried measurement instrument, its faults concentrate in the measurement front-end, the test-current source, the terminal inputs, and the battery.
June Company repairs and calibrates the Fluke 1621 for electrical, utility, and grounding test teams.
Common Fluke 1621 problems we fix
- Resistance-measurement out of spec — measurement front-end drift, recalibrated against standards.
- Test-current / source faults — the injection circuit not driving correctly, repaired.
- Terminal / lead faults — the measurement connections, serviced.
- Display faults — missing or dim segments, repaired.
- Won’t power on — battery/power faults.
FAQs
My 1621 ground-resistance reading is off — fixable? Yes. Measurement and source 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 submit a service request.




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