Discover motor performance, without mechanical sensors: Fluke 438-II Power Quality and Motor Analyzer

January 3, 2019

Troubleshoot direct-on-line motors while in service, without mechanical sensors—so you don’t sacrifice uptime.

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 on direct-on-line motors and motors driven by voltage sourced inverters (VFD) including torque, RPM and mechanical power
  • Calculate Mechanical Power and Efficiency without the need of mechanical sensors, while the motor is in service using three-phase input measurements
  • Perform dynamic motor analysis by plotting of motor de-rating factor against load according to NEMA 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. Existing 438-II users can upgrade their firmware to include the variable frequency drive enhancements at no cost on the Fluke website. Existing 438-II users can upgrade their firmware to include the variable frequency drive enhancements at no cost on the Fluke website. 

Related Articles

Editor’s Pick: Featured Article

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s scalable engineering software, u-control 2000, adapts individually to your requirements. And, the u-control is powerful, compact and fully compatible with Weidmüller’s I/O system u-remote. This article looks at what makes u-control the heart of your automation.

Programmable logic controllers (PLCs) are one of the main components of any automated system. A typical control system has inputs, outputs, controllers (i.e., PLCs), and some type of human interaction with the system, a human machine interface (HMI), for example.

Read More

Latest Articles

  • From Factory Floor to Cloud: How Smart Sensors are Powering the Industrial IoT Revolution

    October 14, 2025 Sensors have evolved from simple detection tools to intelligent data sources that drive smarter decisions. They are no longer just watching; they are communicating, diagnosing, and optimizing.  The Eyes and Ears of Automation Sensors are the first line of awareness in any automated system. They detect the presence or absence of objects,… Read More…

  • Moxa’s Multi-Layered OT Security: Edge-to-Core Cyber Resilience

    October 14, 2025 Building on the concepts introduced in ManAuto’s main article, “Futureproof Industrial OT with Moxa’s Secure Edge-to-Core Networking”, this post focuses on strengthening industrial systems through a layered OT security approach. As cyber threats targeting operational technology (OT) environments continue to evolve, implementing a single layer of defense is no longer enough. In this… Read More…