Discover motor performance,
without mechanical sensors.

Get two-in-one troubleshooting power with the Fluke 438-II Power Quality and Motor Analyzer


Troubleshoot direct-on-line motors and motors driven by voltage sourced inverters (VFD), without mechanical sensors

The 438-II Power Quality and Motor Analyzer can help troubleshoot power quality problems in three-phase and single-phase power distribution systems, while giving you the mechanical and electrical information you need effectively evaluate motor performance.

  • Measure key parameters like torque, RPM and mechanical power without mechanical sensor all while the motor is in service using three-phase input measurements
  • Calculate Mechanical Power and Efficiency without the need of mechanical sensors
  • Automatically calculate motor derating according to NEMA/IEC guidelines

Fluke 434-II, 435-II and 437-II users can add these great motor analysis capabilities and features to their existing analyzers today with a product upgrade option.

Request a demo

Why you should add motor analysis to your maintenance routine

Evaluating electrical, power quality and mechanical performance of electric motors can not only help predict failure it can help avert downtime—find out four keys to understanding motor efficiency and causes for failures.




Download the application note
See product specifications

Download the full data sheet to learn more about mechanical metering functions, electric motor analysis capabilities, and key features of the new Fluke 438-II Power Quality and Motor Analyzer.



See product specifications

Where to buy

You can always turn to our distributors and service centers for local assistance. They’ll help you with traceability, calibration, repair and self-maintenance.