Wet Globe Kit pictured
(NSN 6665-01-381-3023) utilizes the WBGT index to measure the potential
heat stress risk. Temperature and humidity are generally monitored to evaluate
risk, however the WBGT Index also accounts for the impact that direct sunlight
has on the subject.
The Wet Globe Kits manufactured
by Sigma Products include three thermometers to measure three different
Dry Bulb (DB) - Shielded
from direct sunlight - reads actual air temperature.
The calculator included with the Wet Globe Kit will convert these three measurements into the WBGT reading. You may actually calculate the WBGT as follows:
WBGT Index = 0.7 WB + 0.2 BG + 0.1 DB