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Video Compression, Time & Frequency Stds, GPS and Board Level Timing Solutions


The Fluke 437-II series helps you locate, predict, prevent and troubleshoot Power Quality Issues – 50Hz, 60Hz and 400Hz

  • 400 Hz operation for use in avionic and military applications
  • Shipboard power measurement system analyzes according to MIL-STD 1399 to automatically give a full evaluation of voltage, current and power
  • Advanced Power Quality Health— At-a-glance power quality health data in real-time so you have the data you need, when you need it


  • 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


  • 320 x 240 resolution
  • 2 meter drop test
  • LaserSharp™ Auto Focus
  • Manual or automatic focus
  • Measure up to 650 °C


  • Power quality statistics according to EN50160
  • Voltage event list (dips, swells and interruptions)
  • Continuous recording of:
    • Voltage
    • Current
    • Power P, Q, S
    • Power factor
    • kWh
    • Flicker
    • Unbalance
    • Frequency
    • Voltage and current harmonics to the 50th / Interharmonics
    • THD
    • Mains signaling
  • Triggered recordings
  • Online mode (Oscilloscope, transients and events)
  • 2 GB Flash memory


  • 0.1% DC accuracy
  • Current measurements up to 10 A, 20 A for up to 30 seconds
  • Millisecond pulse width measurements for fuel injectors
  • Optional magnetic hanger allows meter to attach to the vehicle and free your hands for other tasks
  • Min/Max/Average recording with Min/Max Alert to capture variations automatically
  • Peak Min/Max to record transients as fast as 250 μs
  • Relative mode to remove test lead resistance from low ohms measurements
  • Auto and manual ranging for maximum flexibility
  • Autohold™ to capture stable readings with only one touch of the leads
  • Large display digits and two-level bright white backlight for increased visibility
  • Analog bargraph to track changing or unstable signals
  • Input Alert provides audible warning against wrong use of input jacks
  • Access door for fast battery changes without opening up the case
  • "Classic" design that fits your hand with new removable holster, built-in test lead and probe storage
  • 10 meg ohm input impedance won’t damage computer circuits
  • Limited lifetime warranty