Extech HD500 Psychrometer with InfraRed Thermometer

The Extech Psychrometer with InfraRed Thermometer combines the functions of a humidity meter, type K thermometer, and InfraRed thermometer.


  • Type K thermometer for contact temperature measurement to 2501°F
  • 2% RH accuracy
  • Includes Windows ® compatible software with USB cable
Your Price $307.99
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The Extech Psychrometer with InfraRed Thermometer combines the functions of a humidity meter, type K thermometer, and InfraRed thermometer for non-contact surface temperature measurements. The built-in IR thermometer performs non-contact temperature measurements to 932°F (500°C) with 30:1 distance to target ratio. The type K temperature function conducts temperature measurements to 2501°F (1372°C). The meter has a high 2% relative humidity accuracy. The heavy duty rugged double molded housing with large triple LCD backlit display includes a USB port for connection to a PC using the included software for further analysis of data points.

  • IR thermometer range: -58 to 932°F (-50 to 500°C)
  • IR thermometer basic accuracy: ±2% or ±4°F/2°C
  • Distance to target ratio: 30:1
  • Type K temperature range: -148 to 2501°F (-100 to 1372°C)
  • Type K temperature basic accuracy: ±(1% + 1°C)
  • Air temperature range: 14 to 140°F (-10 to 60°C)
  • Air temperature basic accuracy: ±(2% ±4ºF/2°C)
  • Relative humidity range: 0 to 100%RH
  • Relative humidity basic accuracy: ±2%RH
  • Dew point range: -90.4 to 140°F (-68 to 60°C)
  • Wet bulb range: -6.88 to 140°F (-21.6 to 60°C)
  • Dimensions: 10 x 2.9 x 2" (255 x 75 x 50mm)
  • Weight: 12.3oz(350g)
  • (1) Psychrometer
  • (1) Type K temperature probe (-58 to 482F/-50 to 250C)
  • (1) Windows compatible PC software
  • (1) USB cable
  • (1) Built-in stand
  • (1) Carrying case
  • (1) 9 V battery
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