What does a WBGT measure?

The WetBulb Globe Temperature (WBGT) is a measure of the heat stress in direct sunlight, which takes into account: temperature, humidity, wind speed, sun angle and cloud cover (solar radiation). This differs from the heat index, which takes into consideration temperature and humidity and is calculated for shady areas.

How many degrees does WBGT add to body armor?

5 degrees Fahrenheit
If wearing body armor add 5 degrees Fahrenheit to WBGT in humid climates. If wearing NBC clothing (MOPP 4) add 10 degrees Fahrenheit to WBGT.

What three measures are integrated to determine the WBGT?

WBGT takes into account:

  • temperature.
  • humidity.
  • wind speed.
  • the intensity of the sunlight (i.e. sun angle and degree of cloud cover)

How do you calculate dry bulb temperature?

Dry-bulb temperature – Tdb, can be measured using a normal thermometer freely exposed to the air but shielded from radiation and moisture. The temperature is usually given in degrees Celsius (oC) or degrees Fahrenheit (oF).

Can WBGT be used indoors?

The Heat Stress instrument measures WBGT (Wet Bulb Globe Temperature) for both indoor and outdoor environments.

At what hours of the day do peak WBGT conditions occur?

(4) Peak conditions usually occur between 1200 and 1600 hours. Local and regional conditions may warrant modification of the work schedule during these peak hours. b. The WBGT kit.

What position does the scale need to be in to find the correct WBGT index?

Read Wet Bulb Globe Temperature Index (WBGT INDEX) scale at the point directly above the Black Globe Temperature (BG TEMP) reading. d. If you performed the slide rule movement correctly, the Index should read 90.

How do you calibrate a WBGT meter?

Plug the sensor probe into the 75 % calibration salt bottle. Press the power button for 2 seconds to start until blinking “7X. X % ” displays on the screen.” Meter will finish calibrating in about 60 minutes (1 hour) or when the value stops blinking.

How do you use the WBGT Kestrel?

  1. INSTALL BATTERY. Slide the battery door latch and open door.
  2. POWER ON KESTREL. Press to power on Kestrel.
  3. CONFIGURE WBGT SETTINGS. Scroll to the WBGT Current Measurement Screen and press select.
  4. ENTER OPTIONS MENU. Press to enter the Options Menu.
  5. SET AUTO STORE RATE.
  6. SET OVERWRITE.
  7. SET GRAPH SCALE.
  8. SET AUTO SHUTDOWN.

How do you measure WBT and DBT?

The DBT and WBT of the air are measured by a special thermometer called Sling thermometer. It comprises of two ordinary thermometers, but one of them is covered with the wet wick or cloth. The uncovered thermometer measures dry bulb temperature, while the one covered with wet cloth measures wet bulb temeprature.