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Extech Instruments HT30 User Manual

Extech Instruments HT30
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2 HT30-en-GB_V3.6 4/16
Introduction
Congratulations on your purchase of Heat Stress WBGT (Wet Bulb Globe Temperature) Meter. This
meter measures and displays Heat Stress Index (WBGT), which is how hot it feels when humidity is
combined with temperature, air movement, and direct or radiant sunlight. Black Globe Temperature
(TG) monitors the effects of direct solar radiation on an exposed surface. It also measures air
temperature (TA) and Relative Humidity (RH). Additional features include: selectable units of °F/°C,
Auto power off with override, and a built-in RS-232 interface with optional 407752 Windows®
software. This meter is shipped fully tested and calibrated and, with proper use, will provide years of
reliable service.
Meter Description
1. Black Globe temperature sensor
2. RH and Temperature sensors with protective cover
3. LCD display
4. /SET
5. NEXT
6. MODE/
7. RS-232 interface
8. Battery compartment (on rear)
DISPLAY
Symbol Function
WBGT Wet Bulb Globe Temperature
TG Black Globe Temperature
TA Air Temperature
RH% Relative Humidity
OUT Indoor (no sun)
IN Outdoor (in full sun)
C/F Celsius/Fahrenheit
Low Battery indicator
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Extech Instruments HT30 Specifications

General IconGeneral
BrandExtech Instruments
ModelHT30
CategoryMeasuring Instruments
LanguageEnglish

Summary

Meter Operation Guide

Powering the Instrument On/Off

Instructions on how to turn the instrument on and off using the /SET button.

Heat Stress Alarm Configuration

Entering Alarm Setup Mode

Procedure to enter the alarm setup mode by holding the /SET button.

Adjusting Alarm Digits

How to increment digits and move to the next digit for alarm setting.

Saving Alarm Settings

How to save the configured alarm setting by holding the NEXT button.

Meter Features and Troubleshooting

Understanding Error Messages

Explanation of error codes E2, E3, E4, E11, and E33.

Technical Specifications

Heat Risk Guidance for Athletic Trainers

Heat Disorder Symptoms and First Aid

Information on symptoms and first aid for Sunburn, Heat Cramps, Heat Exhaustion, and Heat Stroke.

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