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The 4180 Series of Precision Infrared Calibrators for infrared thermometers and thermal imagers is fast, accurate, and easy to use. It comes with an accredited calibration from one of the world’s most trusted temperature calibration laboratories, sample calibration procedures for Fluke thermometers built right in and everything you need to get started making high-quality infrared thermometer calibrations. This is the perfect solution for any infrared thermometer or thermal imager within its temperature range.
The 4180 reaches temperatures from –15 °C to 120 °C and the 4181 has a temperature range from 35 °C to 500 °C. Uniformity is important in infrared temperature calibration work because an infrared thermometer will “see” as much as the entire target when placed at the appropriate calibration distance.
In addition, with accuracies as good as ±0.35 °C the 4180 Series can meet its specifications without additional emissivity-related corrections, leading to legitimate test uncertainty ratios (TUR) as good as 4:1.


  • Precision multifunction process calibrator designed specifically for the process industry
  • Delivers precise measurement and calibration source performance with accuracies of 0.01%.
  • Stores up to eight calibration results in memory for later analysis
  • Offers HART mode that inserts a 250 ohm resistor in mA measure and source for compatibility with HART instrumentation


  • VCHEK™ LoZ low impedance measurement function to simultaneously test for voltage or continuity*
  • True RMS for accurate AC measurements on non-linear loads
  • A large backlit display allows for easy visibility in low-lit areas
  • Record signal fluctuations using the Min/Max function
  • Diode test for testing general-purpose germanium, silicon, and power diodes
  • Integral holster with probe holders for easy storage
  • Auto and Manual ranging for added user functionality
  • The optional TPAK magnetic hanger allows the user hands-free flexibility


  • Loop calibrator that measures 4 to 20 mA signals without breaking the loop
  • Features best in class 0.2% accuracy
  • Delivers 0.01 mA resolution and sensitivity
  • Measures mA signals for PLC and control system analog I/O
  • Features a detachable clamp with extension cable for measurements in tight locations


  • 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