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Extech HT200 Heat Stress WBGT Wet Bulb Globe Temperature Meter

The Extech HT200 measures WBGT, Black Globe Temperature, Humidity, Air Temperature, Wet Bulb and Dew Point

Next Day Delivery (subject to availability)

£292.50 excluding VAT £351.00 including VAT @ 20% Regular Price: £413.16
  • Essential Workplace Welfare Monitoring
  • Stores 50 Readings
  • WGBT Measurement
  • Min/Max/Average
  • Temperature Measurement
  • Humidity measurement
  • Case Included
  • Measures Heat Radiation
  • FreeDelivery
  • 30DayMoneyBack
  • Description
  • Features & Specification
  • Resources
  • Delivery

Extech HT200 Heat Stress WBGT Wet Bulb Globe Temperature Meter

Measures WBGT, Black Globe Temperature, Humidity, Air Temperature, Wet Bulb and Dew Point

This instrument is essential for measuring heat index, combined heat, humidity and air movement to determine safe levels for exposure.
This could be for a working envioronment, sports events, public gatherings etc, anywhere the sun/heat exposure level is a likely or potential factor for causing heat related stress or exposure leading to ill effects. When it comes to working conditions and associated risk, a simple thermometer reading just isn't sufficient for determining safe working conditions.

The HT200 is a Heat Stress WGBT Meter which enables accurate measurements for Wet Bulb Globe Temperature (WGBT), Black Globe Temperature (TG), 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. Stores up to 50 readings. Comes with 9V battery, carrying case and AC adapter.

Extech HT200 Comes Supplied With:

  • HT200 Heat Stress Meter
  • 9v Battery
  • Hard Carry Case
  • Mains adapter


What does it do?:

  • Meter accurately determines the Heat Stress level by factoring a combination of humidity, temperature, air movement, and direct solar radiation
  • 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)
  • 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
  • Min/Max, Data Hold, Auto Power Off, Low battery indicator
  • Complete with 9V battery and hard carrying case

Additional Features:

  • 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

ISSWWW and Extech

Since 1971, Extech Instruments has focused on Test and Measurement tools built for the professionals, tradesperson and DIY’ers. Our single source strategy has made us the brand to turn to when it comes to tools that help prevent, identify and troubleshoot problems in a plethora of applications; whether it’s electrical, mechanical, maintenance, safety or environmental applications, our products are trusted by the professionals and are put to the test every day.

SpecificationsRangeMax ResolutionBasic 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 Meter: 11.8 x 2.8 x 2" (300 x 70 x 50mm)
Ball: 2" (50mm) diameter
Weight 7.8oz (220g) w/o battery
There are no files associated with this product. For more information please call 0800 0224 060

Standard FREE 3-5 Day Courier Delivery – UK Mainland only - Zones A & B
Included in the price for all orders over £40.00 (exc vat). Sent using express courier, delivered within 3-5 working days from the date of your order, subject to availability.

Standard 1-2 Day Express Courier Delivery – UK Mainland only - Zones A & B
£4.50 for all all orders under £40.00 (exc vat). Sent by express courier, delivered within 1-2 working days from the date of your order, subject to availability.

Express Courier 1-2 Day Delivery – UK Mainland only - Zones A & B
£4.50 select at the checkout. Sent using express courier.

Next Day Delivery – UK Mainland only - Zones A & B
£8.00 select at the checkout. Sent using express courier, orders must be placed before 3pm for next day delivery, subject to availability.

Saturday Pre 12am - UK Mainland only - Zones A & B
£15.00 select at the checkout. Sent using express courier, orders must be placed before 3pm for Saturday delivery.

Orders must be placed before 3pm for next day delivery and a telephone number supplied, subject to availability.
Please note that predicted delivery times are based on regular trading days Monday to Friday. Public holidays, bank holidays and weekends are outside the usual scope of our dispatch and therefore may incure additional days lead time to your order.

Orders requiring calibration. Whilst we take the greatest care to get all orders dispatched and delivered to you in the stated time frame, orders received late afternoon and requiring calibration may on occasion miss dispatch that day, according to the complexity of the calibration. Be assured they will ship on the next dispatch, this in most cases should not add more than 24 hours to you delivery.

Delivery Surcharges
Because of the high cost of carriage we need to apply a surcharge on all deliveries made in the following regions bringing the carriage charges to:

  • Zones A & B  - Mainland delivery rates apply. 
  • Zone C - Scottish Highlands. 
  • Zone D - Outer Hebrides, Orkney Isles, Shetland Isles, Isle of Man, Scilly Isles, and Channel Islands.
  • Zone E - Northern Ireland
  • Zone F - Republic of Ireland

New Postage Map Sept 2018> 

International delivery

International delivery charges are automatically added to your order at the checkout; you can also use the guide below for a guide on prices. For any questions regarding international deliveries please contact us at sales@isswww.co.uk

If no shipping option is available to your selected country please call us on +44 (0) 1603 406 148 to purchase your items.