PRODUCT DATASHEETPRODUCT DATASHEET
Extech’s Heat Stress WBGT (Wet Bulb Globe
Temperature) Meter accurately determines the Heat
Stress level (how hot it feels outside) by factoring a
combination of humidity, temperature, air movement,
and direct solar radiation. These factors all affect how
hot our bodies get, as well as our ability to cool down.
It’s perfect for monitoring the Heat Index on hot humid
days to prevent heat stroke during road or building
construction, outdoor activities, sporting events, or in
• Uses a capacitance sensor to accurately measure
Wet Bulb Globe Temperature (WBGT), Black Globe
Temperature (TG), Relative Humidity (%RH), Air
Temperature (TA), Wet Bulb (WT) and Dew Point (DEW)
• Heat Stress Index measures how hot it feels when
humidity is combined with temperature, air movement,
• Black Globe Temperature (TG) monitors the effects of
direct solar radiation on an exposed surface
• In/Out function displays the WBGT value with or
without direct sun exposure
• WBGT high/low alarm settings
• Memory stores up to 50 readings
• Auto power off with disable
• Complete with 9V battery and hard carrying case
Specifications Ranges Max Resolution Basic Accuracy
WBGT - Wet Bulb Globe Temperature (w/o sunlight) 32 to 138°F / 0 to 59°C 0.1° ±1.8°F/1°C
WBGT - Wet Bulb Globe Temperature (w/sunlight) 32 to 132°F / 0 to 56°C 0.1° ±2.7°F/1.5°C
TG - Black Globe Temperature 32 to 176°F / 0 to 80°C 0.1° ±1.1°F/0.6°C
TA - Air Temperature 32 to 122ºF / 0 to 50ºC 0.1° ±1.5°F/0.8°C
Relative Humidity 1 to 99%RH 0.1%RH ±3%RH
Dew Point -31.5 to 120.1°F / -35.3 to 48.9°C 0.1°
Wet Bulb -6.9 to 122°F / -21.6 to 50°C 0.1°
Meter: 11.8 x 2.8 x 2" (300 x 70 x 50mm)
Weight 7.8oz (220g) w/o battery
HT200 Heat Stress WBGT Meter ...............
Specifications subject to change without notice. Copyright © 2014-2015 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form.
