Method for monitoring exposure time of workers in workplace
    1.
    发明授权
    Method for monitoring exposure time of workers in workplace 失效
    监测工作场所工作人员接触时间的方法

    公开(公告)号:US06703922B2

    公开(公告)日:2004-03-09

    申请号:US10179181

    申请日:2002-06-26

    IPC分类号: G08B100

    CPC分类号: G01D9/005 G01H3/14 G01T1/02

    摘要: A method for monitoring exposure time of workers involves the use of a sensor, which is carried by the workers for monitoring continually in a real-time fashion in an environment such that the results are recorded by a recorder. The an add-on or built-in timer in the sensor or the recorder is used to monitor time, which is recorded in the recorder simultaneously, so as to obtain the real-time continuous exposure level of a hazardous material in the environment.

    摘要翻译: 用于监测工作人员的暴露时间的方法涉及使用传感器,其由工作人员携带,以在环境中以实时方式连续监视,使得记录器记录结果。 传感器或记录仪中的附加或内置定时器用于监视同时记录在记录仪中的时间,以便获得环境中有害物质的实时连续曝光水平。

    Device for measuring an absorbed dose of gas by skin and method therefor
    2.
    发明授权
    Device for measuring an absorbed dose of gas by skin and method therefor 失效
    用于测量皮肤吸收的气体剂量的装置及其方法

    公开(公告)号:US5984868A

    公开(公告)日:1999-11-16

    申请号:US105990

    申请日:1998-06-29

    IPC分类号: A61B5/103 A61N5/00

    CPC分类号: A61B5/441 G01N7/02

    摘要: A device is intended to measure an absorbed dose of a hazardous gas by skin of a human body and is composed of an exposure chamber, a gas concentration control system, and one or more gas sensors. A naked part of the human body is held in the exposure chamber containing the hazardous gas of a concentration which is kept in a predetermined range by the gas concentration control system. As the concentration of the hazardous gas drops below the predetermined range, the gas concentration control system replenishes the exposure chamber with an amount of the hazardous gas with the help of a concentration signal transmitted from the sensors, so that the concentration of the hazardous gas is once again kept in the predetermined range. The absorbed dose of the hazardous gas by skin is computed on the basis of the amount of the hazardous gas that is replenished.

    摘要翻译: 一种装置旨在通过人体皮肤测量有害气体的吸收剂量,并且由曝光室,气体浓度控制系统和一个或多个气体传感器组成。 将人体的赤裸的部分保持在曝气室中,该曝光室含有通过气体浓度控制系统保持在预定范围内的有害气体。 随着有害气体的浓度下降到预定范围以下,气体浓度控制系统借助于从传感器传输的浓度信号,补充一定量的危险气体,使危险气体的浓度为 再次保持在预定范围内。 皮肤有害气体的吸收剂量是根据补充有害气体的量计算的。

    Method and apparatus to measure particulate matter in gas
    4.
    发明授权
    Method and apparatus to measure particulate matter in gas 失效
    测量气体中颗粒物质的方法和装置

    公开(公告)号:US5571945A

    公开(公告)日:1996-11-05

    申请号:US403321

    申请日:1995-03-13

    IPC分类号: G01N1/02 G01N15/06

    CPC分类号: G01N15/0618

    摘要: Apparatus for measuring the amount of particulate matter in a gas having a gas supply, a first particulate matter collector downstream of the gas supply and in gaseous communication with the gas supply, and a second particulate matter collector downstream of the gas supply and in gaseous communication with the gas supply. Gas from the gas supply to the second particular matter collector is passed through a particle remover to remove particulate matter prior to contact of gas from the gas supply with the second particulate matter collector. A pressure sensor is provided to measure differential pressure between the first particulate matter collector and the second particulate matter collector, and at least one pump to cause gas to pass from the gas supply to the first particulate matter collector and the second particulate matter collector.

    摘要翻译: 用于测量具有气体供应的气体中的颗粒物质的量的装置,在气体供应器下游并与气体供应气体连通的第一颗粒物质收集器,以及在气体供应器和气体通路下游的第二颗粒物质收集器 与气体供应。 在气体供应与第二颗粒物收集器接触之前,从气体供应到第二特定物质收集器的气体通过颗粒去除器去除颗粒物质。 提供压力传感器来测量第一颗粒物质收集器和第二颗粒物质收集器之间的压差,以及至少一个泵,以使气体从气体供应通过到第一颗粒物质收集器和第二颗粒物质收集器。