Fluke 438-II Motor Analyzer Repair

Description

Fluke 438-II Power Quality and Motor Analyzer Repair

The Fluke 438-II is a three-phase power quality and motor analyzer — it adds mechanical motor measurements (torque, speed, efficiency) derived from electrical signals to a full three-phase PQ analyzer, measuring voltage, current, power, harmonics, and PQ events across all phases (with current probes). Its accuracy depends on the voltage and current measurement inputs and the acquisition engine, which is where service and calibration focus.

FlukeMeterRepair.com repairs and calibrates the Fluke 438-II for motor-drive technicians, industrial electricians, and PQ teams.

Common Fluke 438-II problems we fix

• Harmonic-distortion / PQ measurement faults — harmonics or PQ readings out of spec, repaired and recalibrated against standards.
• Current-input or probe channel faults — a phase not reading from its probe, repaired.
• Motor-parameter / acquisition faults — torque/speed/efficiency derivation skewed, repaired.
• Won’t power on or hold a charge — battery and power faults.
• Display or input faults.

FAQs

My 438-II harmonics or motor readings are off — fixable? Yes. Input and acquisition faults are repairable, then all inputs are recalibrated so 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.