Heat Index Meter(WBGT-101)

KEM Product

Heat Index Meter

WBGT-101

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Wet Bulb Globe Temperature (WBGT) is commonly used as a guidance for environmental heat stress to prevent heat stroke during physical exercise or while at work.

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WBGT as a measurement method to determine heat stress given to human body at work in thermally harsh environment is specified in ISO 7243 under the title; Hot Environments － Estimation of the heat stress on working man, based on the WBGT-index (wet bulb globe temperature).

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Below chart of WBGT-index shows the criterion of heat stress warning specified by Japan Athletic Society in order to prevent heat stroke:

WBGT[°C]	Types of warning and required rest
Below 21	Safe (needs occasional supply of water)
21 - 25	Note (needs immediate supply of water)
25 - 28	Caution (needs to take rest)
28 - 31	Warning (Stop active physical exercise)
Above 31	Dangerous (Cancel physical exercise)

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Maximum 1,000 sets of data can be stored, and continuous measurement by automatic sampling is possible.

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Measuring result data can be printed out by the optional printer.

Specifications :

Type and model name

WBGT-101 Heat Index Meter

Measurement data

･WBGT, Temperature, Humidity, Wet bulb temp. and Glob temp.
･WBGT data can be switched Outdoor or Indoor.

Measuring range

WBGT	:	0 - 50°C
Temperature	:	0 - 50°C
Wet bulb temp.	:	0 - 50°C
Humidity	:	10 – 90%RH
Glob temp.	:	0 - 50°C

Accuracy

WBGT	:	±1.0°C (at 15-35°C)
Temperature	:	±0.5°C (at 15-35°C, without radiation effect)
	:	±1.0°C (at 15-35°C, with radiation at ±20°C)
Humidity	:	±3% (at 20-80%RH)
Glob temp.	:	±0.5°C (at 15-35°C)

Ambient condition

Ambient temperature : 0 - 40°C
Radiation temperature : 0 - 50°C

Stored data

1,000 sets

Sampling interval

1 – 99 minute

External I/O

RS-232C for printer…1 ch.

Power source

AM-3 : 1.5V dry cell 4pcs.

Accessories

1.5V dry cell ......................................................... 4 pcs.
Tripod .................................................................. 1 pce
Cramp head .......................................................... 1 pce
Measuring part ...................................................... 1 set
Hard case ............................................................. 1 pce
Operating manual .................................................. 1 copy