Respirator cartridge end-of-service life indicator

作者: Peter C. Magnante

DOI:

关键词: Hazardous wasteALARMCartridgeEnvironmental engineeringService lifeAir-purifying respiratorAlarm deviceRespiratorWaste managementEngineering

摘要: A gas or vapor sensing and alarm device in an air purifying respirator for warning the wearer of hazardous levels gases vapors penetrating through cartridge. An exothermic sensor which can be fitted cartridge adaptor facepiece cavity monitors heat evolved during adsorption into sensor's adsorbent triggers when has reached end its service life.

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