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Compact WBGT Heat Index Meter (WBGT-208) 40mm Black Ball

Model #: WBGT-208

UPC: 0810106421537

Condition: New

Regular Price: $291.95 $194.00

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Lutron WBGT Heat Index Meter with 40mm Black Brass Ball.

Compact size with high accuracy and audible alarm.

WBGT (wet-bulb globe temperature) was developed as a monitoring basis at US military training camps and became widespread for the use in workplaces and sports training facilities all over the world. It is suggested in the international standard ISO 7243, OSHA (US Occupation Safety), Japan Society for Occupational Health and the SMA (Sports Medicine Australia) in establishing the permissible heat exposure limits in health, sports or other physical activities.

  • Measurement:
    • WBGT: value (indoor/outdoor wet bulb globe temperature).
    • TG: Black globe temperature.
    • RH: Relative humidity.
    • TA: Air temperature.
    • WB: Wet bulb temperature.
    • DP: Dew point temperature.
  • Adjustable WBGT alarm setting (when the WBGT value is over the alarm threshold, the buzzer will sound along with a flashing display).
  • Use to control and monitor physical activity in hot environments to limit the danger of heat related injuries.
  • Threaded tripod mount.


  • Black globe temperature range (TG): 32° to 176°F (0° to 80°C) with 0.1° resolution.
  • Black globe temp. accuracy: plus or minus 1.1°F (0.6°C).
  • Humidity range: 5 to 95% RH with 0.1% resolution.
  • Humidity accuracy (within): 3% of reading.
  • Dew point temperature range: -13.5° to 120.1°F (-25.3° to 48.9°C) with 0.1° resolution.
    Dew Point Temperature is calculated automatically from Humidity and Air Temperature.
  • Wet bulb temperature range: -6.9° to 122.0°F (-21.6° to 50.0°C) with 0.1° resolution.
    Wet Bulb Temperature is calculated automatically from Humidity and Air Temperature.
  • WBGT formula:
    • Outdoor and no sun: WBGT = (0.7 x WB) + ( 0.3 x TG) globe Temperature.
    • Outdoor and full sun: WBGT = (0.7 x WB) + (0.2 x TG) + (0.1 x TA).
  • Sampling time: approximately 1 second.
  • Operating Temperature: 32° F to 122° F (0° to 50° C).
    NOTE most batteries are not rated for below -4° F or above 125° F.
  • Operating Humidity: less than 85% RH non-condensing.
  • Power: (3) AAA alkaline batteries or equivalent.
  • Power Current (consumption):
    • with LCD Backlight OFF, approximately 5 mA.
    • with LCD backlight ON, approximately 11 mA.
  • Dimensions:
    • Meter: 7" x 2.2" x 0.9" (177 x 57 x 24mm).
    • Black brass ball: 1.57" (40mm).
  • Weight: 4 ounces (130 grams), without batteries installed.

Supplied with:

  • CA-05 Carrying Case
  • Operation instruction manual.
  • 40mm black brass ball.

Optional items:

  • Lutron Data Acquisition Software for Windows SW-U801-WIN.
  • Lutron Data Acquisition Software for Windows with Excel SW-E802.
  • Lutron USB Data Acquisition Cable with Driver USB-01.

Lutron Certificate of Calibration

Lutron Calibration Certificate

These meters arrive brand new from Lutron with their factory calibration certificate enclosed. Until our chain of custody is broken we are certain and guaranty that every meter meets this standard. InspectUSA would need to ship the new meter directly to your NIST lab, with the guaranty it would meet NIST standards. We must ship the instrument direct to an approved NIST lab for this guaranty. Once the chain of custody is broken for whatever reason, this guaranty is no longer valid.

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