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Programmable Precision AC & DC Sources, Loads and Custom Power Solutions


The 438-II Power Quality Analyzer & Motor Analyzer helps you effectively evaluate electrical and mechanical performance just by hooking up voltage and measuring current, providing you with an unprecedented level of data.
  • Brings key motor analysis parameters like speed, torque and mechanical power and calculates motor efficiency without mechanical sensors
  • Includes full power quality and electrical energy analyzer functionality
  • Highest safety rating in industry; 1000 V CAT III / 600 V CAT IV


  • True RMS Digital Multimeter with detachable display
  • Measures up to 1000 VAC and DC
  • Measures up to 10 A (20 A for 30 seconds)
  • Provides a 10,000 μF capacitance range
  • Measures frequency to 50 kHz
  • Includes a built-in thermometer to measure temperature without a separate instrument


Analyze power quality issues, calculate the costs of wasted energy and prevent downtime with the Fluke 434-II Energy Analyzer and Fluke 435-II Power Quality and Energy Analyzer.
  • Advanced power quality health—At-a-glance power quality health data in real time so you can make better maintenance decisions
  • Energy loss calculator—Discover the costs of energy loss specifically caused by poor power quality
  • Highest safety rating in industry—CAT III 1000 V / CAT IV 600 V


  • Two electrically isolated inputs
  • CAT III 1000V / CAT IV 600V safety rated
  • 100 MHz bandwidth model
  • 1.25 GS/s
  • Deep memory: 10,000 samples per channel waveform capture so you can zoom in on the details
  • Dedicated 5000 Count digital multimeter
  • Connect-and-View continuous auto-trigger, single shot, pulse width, and video triggering
  • ScopeRecord roll mode, capture waveform sample data for up to 48 hours
  • TrendPlot, trend measurement readings for up to 22 days
  • Advanced automatic measurements, power (Vpwm, VA, W, PF) and time (mAs, V/s, w/s)
  • IP-51 rated for dust and drip proof to withstand harsh environments
  • Isolated USB ports for memory devices and PC connectivity
  • Li-Ion battery for extended operating timespan
    • Up to 4 hours (BP290 included standard) or up to 8 hour with optional BP291
    • Charge spare battery using optional external battery charger EBC290
  • Easy-access battery door to make it easy to swap batteries
  • A handy slot to tether and lock down the oscilloscope while unattended using a standard Kensington® lock


  • IP 67 waterproof & dustproof protection, completely sealed for use in harsh environments
  • Designed to withstand 3 meter drop (with holster)
  • Unique function for accurate voltage and frequency measurements on adjustable speed motor drives and other electrically noisy equipment
  • MSHA approval
  • Limited lifetime warranty