Description
Fluke 438 Power Quality and Motor Analyzer Repair
The Fluke 438 is a three-phase power quality and motor analyzer — it adds mechanical motor measurements (torque, speed, efficiency, derived without sensors) to Class-A power-quality analysis across all phases (with current probes). Its accuracy depends on the voltage and current measurement inputs and the motor-analysis computation, so that’s where service and calibration focus.
FlukeMeterRepair.com repairs and calibrates the Fluke 438 for power-quality, motor, and reliability teams.
Common Fluke 438 problems we fix
- Motor-analysis faults — the torque/speed/efficiency computation returning wrong results from a measurement fault, repaired and recalibrated.
- Current-input or probe channel faults — a phase not reading from its probe, repaired so all phases measure.
- Readings out of spec — measurement-circuit drift, recalibrated against standards.
- Won’t power on or hold a charge — battery and power faults.
- Display or input faults.
FAQs
My 438 motor results or a phase is off — fixable? Yes. Input and analysis faults are repairable, then all inputs are recalibrated so power, PQ, and motor measurements are accurate, with a NIST-traceable certificate.
Are the current inputs 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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