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公开(公告)号：US4112302A
公开(公告)日：1978-09-05
申请号：US773605
申请日：1977-03-02
摘要： A gas monitor comprising means for detecting changes in electron flow between two electrodes caused by absorption of the electrons by an electron capture gas flowing between the electrodes. A carrier gas is supplied to the detecting means at a predetermined velocity. A sample of the gas to be measured is added to the carrier gas by a valve means at a predetermined time which gas sample contains a trace of a first type of electron capture gas. The carrier gas together with any gas sample flows through a column means which slows down the velocity of any other type of electron capture gas in the sample with respect to the velocity of the first type of electron capture gas. The gas then passes through the detector wherein the electron capture gas causes a decrease in the electron flow between the electrodes. Means are provided for measuring the maximum decrease in the electron flow caused by the first type of electron capture gas and means are coupled to the measuring means for indicating the maximum decrease.
摘要翻译： 一种气体监测器，包括用于检测通过在电极之间流动的电子捕获气体吸收电子而引起的两个电极之间的电子流动变化的装置。 以预定的速度将载气供给检测装置。 待测气体的样品在预定时间通过阀装置添加到载气中，该气体样品含有痕量的第一类型的电子捕获气体。 载气与任何气体样品一起流过柱装置，其相对于第一类型的电子捕获气体的速度减慢样品中任何其它类型的电子捕获气体的速度。 然后气体通过检测器，其中电子捕获气体导致电极之间的电子流的减小。 提供了用于测量由第一类型的电子捕获气体引起的电子流的最大减少的装置，并且装置耦合到用于指示最大减小的测量装置。
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公开(公告)号：US4156813A
公开(公告)日：1979-05-29
申请号：US818764
申请日：1977-07-25
CPC分类号： G01N27/66 , G01N33/0006
摘要： A detector module for use in a gas monitor assembly to measure changes in electron flow resulting from absorption of electrons in an electron capture gas includes an internal housing for containing a radioactive source and electrodes suitably spaced apart to permit gas flow therepast. The internal housing along with couplings for interconnection with a gas flow source, a gas receiver and suitable electronic receiver means are disposed within a detector housing having integrally attachable closure means, the detector housing and closure means providing shielding for the radioactive source while being adapted in combination to prevent operating access to the couplings in order to prevent accidental or undesired exposure of the internal housing and radioactive source.
摘要翻译： 用于气体监测器组件中的用于测量由电子捕获气体中的电子吸收产生的电子流的变化的检测器模块包括用于容纳放射源和适当间隔开的气体以允许气体流过的内部壳体。 内部壳体以及用于与气体流动源连接的联接器，气体接收器和合适的电子接收器装置设置在具有可整合地附接的关闭装置的检测器壳体内，检测器壳体和关闭装置为放射源提供屏蔽，同时适于 组合以防止对联接器的操作访问，以防止内部壳体和放射源的意外或不期望的暴露。
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