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    • 3. 发明授权
    • Exposure indicating apparatus
    • 曝光指示装置
    • US5659296A
    • 1997-08-19
    • US328103
    • 1994-10-24
    • Mark K. DebeGregory YuschakEdward E. ParsonageRichard J. PoirierLowell R. Miller
    • Mark K. DebeGregory YuschakEdward E. ParsonageRichard J. PoirierLowell R. Miller
    • A62B18/02A62B18/08A62B19/00G08B21/00G08B21/16G08B17/10
    • A62B18/088
    • An exposure indicating apparatus for monitoring air flowing along a flow-through path extending from the external environment through an air purifying respirator cartridge and into a face mask. A processor housing is releasably attached to the flow-through path so that it can be removed allowing ambient air to enter the flow-through path at the attachment location. A reversible sensor with at least one property responsive to a concentration of a target species within an environment is in fluid communication with the flow-through path. A processing device in the processor housing generates a concentration signal as a function of the at least one property of the reversible sensor. An indicator provides an active indication in response to the concentration signal. A flow-through housing may form a portion of the flow-through path. The flow-through housing may be interposed between the air purifying cartridge and the face mask. The reversible sensor may be located in the processor housing, the air purifying respirator cartridge or the flow-through housing. The sensor is coupled to the processing device by a coupler.
    • 一种曝光指示装置,用于监测沿着从外部环境通过空气净化呼吸器盒延伸到面罩中的流通路径流动的空气。 处理器壳体可释放地附接到流通路径,使得其可以被移除,允许环境空气在附接位置进​​入流通路径。 具有响应于环境中的目标物质的浓度的至少一种性质的可逆传感器与流通路径流体连通。 处理器壳体中的处理装置产生作为可逆传感器的至少一个特性的函数的浓度信号。 指示器响应浓度信号提供活动指示。 流通壳体可以形成流通路径的一部分。 流通壳体可以插入在空气净化盒和面罩之间。 可逆传感器可以位于处理器壳体,空气净化呼吸器筒或流通壳体中。 传感器通过耦合器耦合到处理装置。