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Bob Selwyn is U.S. vice president of sales and marketing for Casella USA. He joined CEL Instruments Ltd. in 1978 as Northern England area sales engineer. In 1985, he was promoted to UK sales manager and, in 1993, to product manager for CEL until the Casella Group bought CEL Instruments in 1998. He transferred to the U.S. in 2001.
Designs of noise dosimeters have evolved over the years from instruments that used to be worn on the belt with a cable microphone on the shoulder to now where the whole instrument is small enough to be worn on the shoulder during the shift.
Determining noise severity requires taking regular measurements with professional-grade instruments to assess whether workers are being exposed to too much noise.
High temperatures and humidity challenge the body’s ability to control its internal temperature, and workers involved in strenuous activity and/or wearing hot protective clothing are at serious risk of the sometime fatal condition of heat stroke.
Careful design and use of the latest digital signal processing technology ensures that all of the noise readings currently in wide use are still available in badge style dosimeters being introduced to the industrial hygiene market.
