With Ontario in the grips of a record heat wave, workers who stay outdoors for long periods of time during the day run the risk of succumbing to heat-related illnesses. Recognizing the signs and symptoms of heat-related illnesses is important in ensuring your workers' safety at work. St. John Ambulance offers the following guidelines for administering first-aid for people suffering from heat stress.

Casella USA’s Microtherm heat stress monitor is a simple-to-use, handheld device that displays in real-time the Wet Bulb Globe Temperature (WBGT) index, an internationally recognized method of calculating heat stress. The WBGT data collected is then compared to reference values as defined by the ISO 7243 standard. In the event WBGT levels reach dangerous levels the Microtherm will alert the technician with audible and visual alarms, the company says. 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. The Microtherm product includes a Microsoft Windows 32-bit PC software package (Win HSM) that provides 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.
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