Request a demo


  • Reduced risk—Permanently installed voltage and current connections can be accessed without opening the panel door
  • Increased efficiency—Quickly connect your logger or analyzer and begin taking measurements faster than ever
  • Easy installation—A standard step drill bit and electro-hydraulic hole punch provide the simple means to quickly mount the window in the panel


  • Powerful, easy-to-use field calibrator
  • Measures volts, mA, pressure, RTDs, thermocouples, frequency, and ohms to test sensors and transmitters
  • Sources/simulates volts dc, mA, thermocouples , RTDs, frequency, ohms, and pressure to calibrate transmitters
  • Measures/sources pressure using any of 50 Fluke 750P Pressure Modules
  • Easy to read measure/source screen displays input and output simultaneously


Best performance thermometer in its price range
  • Battery packs available
  • Best price/performance package
One of Fluke Calibration’s best-selling products is the Tweener thermometer, and there’s a reason. No other company, not one, has a reference thermometer that comes close to the performance and features of the Tweener for anywhere near its price.


  • Short-term accuracy to ± 0.01 °C; one-year drift < ± 0.01 °C
  • Accredited NVLAP calibration optional
  • Flexible PTFE and silicone coated fast-response models
  • Rugged polished stainless steel sheaths


  • 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)
  • Fast transient analysis up to 10 MHz
  • 4, 600 V voltage probes
  • 4 dual-range flexible current probes (1000 A / 200 A AC)
  • GPS time sync receiver
  • 2 GB Flash Memory