Monitor manages worker heat stress in real time.

Press Release Summary:

Microtherm® calculates Wet Bulb Globe Temperature (WBGT) index by means of 3 sensors that measure natural wet bulb temperature, globe temperature, and air temperature. Sensors are manufactured to BS 1904 and DIN 43760 accuracy standards and can be mounted on instrument or remotely positioned by cable up to 30 ft away. WBGT data is compared to reference values defined by ISO 7243 standard, and in event of WBGT reaching dangerous levels, unit issues audible and visual alarms.

Original Press Release:

Casella Microtherm® Is First Heat Stress Monitor to Feature Real-time Graphical Display of Data for Rapid Decision Making

AMHERST, NH, March 19, 2009 -- Heat stroke is a serious risk to workers wearing hot protective clothing or who are involved in strenuous activity where heat and humidity challenge the body's ability to control its internal temperature.

To combat this risk, Casella USA, the North American subsidiary of worldwide measurement leader Casella CEL, has introduced its Microtherm® heat stress monitor. This simple-to-use, handheld device displays in real-time the Wet Bulb Globe Temperature (WBGT) index which is the internationally recognized method of calculating heat stress. The WBGT data collected is then compared to reference values as defined by the ISO 7243 standard. Appropriate "work rest" regimes can be adopted in the work place or medical assistance undertaken. In the event WBGT levels reach dangerous levels the Microtherm will alert the technician with audible and visual alarms.

The Microtherm calculates WBGT by means of three sensors that are manufactured to demanding BS 1904 and DIN 43760 accuracy standards. The sensors measure three Parameters: natural wet bulb temperature (tnw), globe temperature (tg) and air temperature (ta). These sensors can be mounted directly on the instrument itself or remotely positioned by cable up to 30 feet away.

For workers in power stations, steel works, bakeries, glass manufacturing and other occupations where heat stroke is a shared threat, the new Microtherm is an essential life-safety device. Its large dot-matrix graphical LCD displays real-time changing values of WBGT indoors and outdoors to allow rapid decision making. It also features data-logging capabilities to record date and time, plus the measured and computed values. Logging intervals can be set from 30 seconds to one hour with results shown in either Fahrenheit or Celsius.

Casella includes with the Microtherm a Microsoft® Windows® 32-bit PC software package (Win HSM) that provides an interface for data collection and analysis. The software produces graphical and tabular reports that can easily be imported into other applications. Summary and WBGT Heat Stress Index reports can also be generated.

For more information, please call 800-366-2966 or email On the web at


Founded in 1799 and headquartered in the United Kingdom, Casella CEL is one of the world's leading suppliers of environmental monitoring technologies. It is an ISO 9001-2000 and ISO 14001 certified company with a focus on the development and manufacture of state-of-the-art environmental monitoring instrumentation. Casella CEL instruments are preferred around the world for personal air sampling, real-time dust and particulate measurement, heat stress measurement, IAQ assessment, weather and rainfall monitoring, personal noise dosimetry, environmental noise measurement and real-time frequency analysis. In 2006, Casella CEL was acquired by Ideal Industries, Inc. For more information, please visit

Casella USA is the North American subsidiary of Casella CEL and is headquartered in Amherst, New Hampshire. Sales, service and instrument recalibrations are carried out in the Amherst office by factory trained engineers. This office covers all sales in Canada, the USA and Mexico.

For additional information, please visit

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