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Extech HT30 | Heat stress meter

Contact Instrument Solutions

Extech HT30 heat stress (WBGT) meter with two AA sized batteries available with optional software for analysis of data and generation of reports

The Extech HT30 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. The 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 software.

Typical applications include workplace monitoring, training of athletes in sports arenas and the testing of environments in manufacturing plant

Features

  • Heat Stress Index (WBGT) 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

Technical

The HSE considers the WBGT index as an approximate indicator of heat stress. The index is defined in BS EN 27243:1994 / ISO 7243:1989.

Meter size      254 mm x 48.7 mm x 29.4 mm

Black globe size        40 mm diameter x 35 mm high

Humidity accuracy       +/- 3 % rh

Wet bulb globe temperature accuracy (WBGT)      +/- 2 oC

Black globe accuracy (TG)      +/- 2 oC

Air temperature accuracy (TA)      +/- 1 oC

Support documents

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Extech HT30 heat stress WBGT data sheet.pdf Extech HT30 heat stress WBGT data sheet
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Extech HT30 heat stress WBGT user manual.pdf Extech HT30 heat stress WBGT user manual
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