AZ87786 WBGT (Wet Bulb Globe Temperature) Heat Stress Meter Datalogger Air Globe Temperature Humidity Tester with Backlight Indicator Audible Alarm Data Logging Function Handheld or Mount in Tripod

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  • $137.66

  • Regular Price $144.90

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The Heat Index WBGT meter measures air temperature, globe temperature, and humidity to know heat stress index. It is used in control of physical activity in hot environment and limit the danger of heat-related injuries.

It is used in construction, iron and steel foundries, bricks-firing plants, glass facilities, boiler rooms, mining sites, army training, marathon, beach activities and so on.


  • Direct measurement of the radiation effect with a brass black ball.
  • Adjustable WBGT alarm threshold
  • Audible beeper for heat stress monitoring
  • Sensor protecting mechanism
  • Backlight indicator function (Green, yellow, red, flashing red )
  • Easy self calibration for humidity
  • Celsius / Fahrenheit Temperature unit
  • PC connect for auto logging up to 12000 records
  • Software and USB driver are not required for logging function
  • Offer 8 languages (Japanese, English, Chinese, German, French, Italian, Spanish, Portuguese) to help you set up easier while logging
  • Memory Full and Low battery indicator
  • Hold Function
  • Auto and Manual off function
  • Can be mount in a tripod for long time monitoring


  • Measurement Range
    • Air Temperature: 0~50°C (32~122°F)
    • Globe Temperature: 0~80°C (32~176°F)
    • WBGT Temperature: 0~50°C (32 ~ 122°F)
    • Humidity: 0~100%RH
  • Accuracy
    • Air Temperature: ±0.6°C
    • Globe Temperature: 
      • Indoor: ±1°C (15~40°C) ±1.5°C (others)
      • Outdoor: ±1.5°C (15~40°C) ±2°C (others)
    • Humidity: ±3% (10~90%RH) ±5% (other range)
  • WBGT Formula
    • Indoor/Outdoor and no sun: WBGT = 0.7WB + 0.3TG
    • Outdoor and full sun: WBGT = 0.7WB + 0.2TG + 0.1TA
  • WBGT Indicator
    • No backlight: below 26.7°C (80.06°F)
    • Green backlight / Caution: 26.7~29.4°C (80.06~84.92°F)
    • Yellow backlight / Extreme caution : 29.4~31°C (84.92~87.8°F)
    • Red backlight / Danger: 31~32.2°C (87.8~89.96°F)
    • Red Flashing backlight / Extreme danger: Above 32.2°C (89.96°F)
  • Resolution: 0.1°C / °F, 0.1%RH
  • Response Time: 15 minutes typical
  • Operating condition: 0~50°C, 0~95% RH
  • Storage condition: -20~65°C, 0~95% RH
  • Memory Size: 12000 records
  • Black Ball Size: approx. 75 (D) x 75 (H) mm
  • Meter Size: approx. 75 (H) x 75 (W) 278.2 (L) mm
  • Battery life: approx. 1000 hours (Alkaline) without beep/backlight/logging

Set Includes:

  • 1 x WBGT Meter
  • 4 x AAA Size batteries 
  • 1 x Mini USB cable
  • Instruction Manual
  • Standard Factory Packaging


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