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Weather Monitoring Systems for Real-Time Heat-Stress Risk Warnings
Increasing extreme heat conditions caused by global warning requires the careful limiting of people’s exposure and metabolic activity, to avoid serious health problems. With the situation worsening around the globe, the consequences of thermal stress is affecting a larger number of subjects, especially the most fragile categories of the population, such as outdoor workers, the elderly and the sick, whose metabolic activities and clothing types must be consistent with the risk of thermal stress.
LSI Lastem has asserted that to keep potential thermal stress under control, the traditional practice of short-term monitoring, to provide risk analysis, is no longer sufficient. The company has argued that the new paradigm for outdoor workers' health and safety control must be the continuous monitoring of environmental conditions and initiating real-time warning systems as soon as it is necessary to limit exposure and/or metabolic activity.
The range of LSI Lastem weather stations has consequently been enriched with two new models. A fixed station for continuous measurements, and a portable one for short-medium periods. Both models can perform the verification of heat stress conditions while calculating the best-known heat stress indices (WBGT-ISO7243, PHS-ISO7933, Heat Index, Humidex) and defining the limits for each subject, set according to their degree of acclimatization, metabolic activity and clothing.
Moreover, they can check the distance between the current situation and the defined limit, providing local alarms (activated by electrical outputs) or remote alarms, via SMS, email messages, and data to MQTT brokers. Last, but not least, they can send data to remote FTP servers from where they can be downloaded and analyzed through specific programs. The above is supported by sensors suitable for measurements in extremely severe environments and designed according to stringent standards.
For more than 40 years LSI Lastem has been designing and manufacturing microclimatic systems for indoor monitoring of thermal environments and has a large catalog of instruments to define the best-known indices for all thermal environments – hot, cold and moderate. Merging the features of both weather and microclimatic stations is, therefore, natural for the LSI Lastem engineers.