Extech HT200 Specifications

HT200 Heat Stress

WBGT Meter

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
the workplace.

Features

• 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,

and radiant heat

• 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

• Backlit LCD

• Min/Max and Data Hold

• Low battery indicator

• 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°

Dimensions

Weight 7.8oz (220g) w/o battery

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.
Rev. 1/6/15

PRODUCT DATASHEETPRODUCT DATASHEET

Ordering

HT200 ............... Heat Stress WBGT Meter

Meter: 11.8 x 2.8 x 2" (300 x 70 x 50mm)

Ball: 2" (50mm) diameter

UPC Code: 793950112007

www.extech.com