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This section provides an overview for wbgts as well as their applications and principles. Also, please take a look at the list of 1 wbgt manufacturers and their company rankings.
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WBGT, or wet-bulb globe temperature, is an indicator used to assess heat stress risks in extremely hot environments.
Also known as the wet-bulb black globe temperature or heat stress index, WBGT considers humidity, temperature, and radiant heat, which significantly impact the body's heat balance. It can be calculated using dry-bulb temperature (Td), wet-bulb temperature (Tw), and black-bulb temperature (Tg). In the presence of solar radiation, WBGT is expressed as WBGT = 0.7Tw + 0.2Tg + 0.1Td. In indoor or shaded conditions, it is WBGT = 0.7Tw + 0.3Tg.
The dry-bulb temperature is the air temperature measured by a thermometer. The wet-bulb temperature indicates air and vapor characteristics. The black-bulb temperature, measured using a virtual blackbody sphere (also known as globe temperature Tg), reflects radiant heat exposure. All measurements for WBGT, Tg, Tw, and Td are in degrees Celsius (°C). Airflow influences black-bulb and wet-bulb temperatures, thus being incorporated into WBGT calculations.
First proposed in the United States in 1954 to prevent heatstroke, WBGT was adopted at U.S. military training facilities for its effectiveness. Now, it is an internationally recognized guideline for sports and occupational environments, standardized by ISO.
WBGT is a standard for sports activities and is also used in workplaces and daily life to ensure comfort and avoid overexertion in hot and humid conditions. Regular reassessment of work environments and practices like salt and fluid replenishment, prioritizing sleep, and ensuring adequate ventilation are crucial. WBGT serves as a vital indicator for maintaining safe conditions.
Guidelines for daily life include:
WBGT calculations are based on three measurements: dry-bulb, wet-bulb, and black-bulb temperatures.
Direct air temperature measurement using a standard thermometer.
Measured with a thermometer wrapped in wet gauze, indicating equilibrium temperature with cooling from water evaporation.
Measured using a thermometer in a black-painted, thin copper ball, reflecting perceived temperature in shaded conditions.
WBGT values can be determined using online heat index information or by using a WBGT measuring device for more accurate readings. Handheld types, prevention guideline-based types, and large-display types are available, though accuracy can be affected without a black bulb for measuring solar and radiant heat.
*Including some distributors, etc.
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Sato Keiryoki Mfg. Co., Ltd., established in 1951 and headquartered in Tokyo, Japan, is a manufacturer of temperature measurement and instrumentation products. Its product range includes glass thermometers, industrial thermometers, bimetal thermometers, waterproof digital thermometers, and infrared thermometers. These instruments serve a wide array of applications, spanning industries such as manufacturing and meteorology. The company holds several certifications such as ISO9001, and ISO14001, underscoring its adherence to quality and compliance. The company has been designated as a national accredited calibration body for humidity measurement by the Japanese Government.
Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Japan
|
1 | 100.0% |
Oak Information System
470+ people viewing
Last viewed: 2 hours ago
"SISMIL" is a cloud -type monitoring system that can measure the temperature and humidity of multiple places with an electronic WBGT indexor and ce...
2 models listed
MTL Co., Ltd.
120+ people viewing
Last viewed: 14 minutes ago
■Sales of own products At MTL, we develop energy-saving equipment in-house to meet customer needs. Since we develop our products in-house, we can o...
Sakaki Corporation Co., Ltd.
30+ people viewing
Last viewed: 17 minutes ago
■Summary ・Quick, real-time evaluation of indoor and outdoor heat stress index WBGT index (ISO7243) with high accuracy and reliability ・Real-time ...
TOMONARI Co., Ltd.
90+ people viewing
■Product description To prevent heatstroke, we calculate the heat index (WBGT) and notify you of the danger level. Ordinary thermometers cannot acc...
Sakaki Corporation Co., Ltd.
40+ people viewing
Last viewed: 12 minutes ago
■Summary ・Quick, real-time evaluation of indoor and outdoor heat stress index WBGT index (ISO7243) with high accuracy and reliability ・Real-time ...
Sakaki Corporation Co., Ltd.
40+ people viewing
Last viewed: 21 minutes ago
■Summary ・Quick, real-time evaluation of indoor and outdoor heat stress index WBGT index (ISO7243) with high accuracy and reliability ・Real-time ...
Sakaki Corporation Co., Ltd.
30+ people viewing
Last viewed: 13 minutes ago
■Summary ・Quick, real-time evaluation of indoor and outdoor heat stress index WBGT index (ISO7243) with high accuracy and reliability ・Real-time ...
Sato Keiryoki Mfg. Co., Ltd
20+ people viewing
Last viewed: 1 day ago
This is a tabletop/wall-mounted measuring device that displays the indoor heat index (WBGT index) and four levels of caution, and measures temperat...
Sato Keiryoki Mfg. Co., Ltd
30+ people viewing
Last viewed: 12 hours ago
This is a handy measuring device that combines a black bulb thermometer, thermometer, and hygrometer and can measure the WBGT index, which is used ...
Sato Keiryoki Mfg. Co., Ltd
30+ people viewing
Last viewed: 7 hours ago
A compact black bulb-shaped mobile phone that combines a black bulb thermometer, thermometer, and hygrometer that can measure the heat index (WBGT)...
NC Automation Co., Ltd.
60+ people viewing
Last viewed: 7 hours ago
■Measurement items ・CO2 concentration (0 ~ 9,999 ppm, accuracy ±50ppm + 5% of reading) ・Temperature (-10 ~ 60℃, accuracy ±0.2℃ typ.) ・Humidity (...
Kokugo Co., Ltd.
30+ people viewing
Heat stroke index monitor tabletop type AD-5686 ■Features ・List display of dryness index (absolute humidity)/heat stroke index (WBGT), temperatur...
