公开(公告)号：US5608384A

公开(公告)日：1997-03-04

申请号：US965442

申请日：1992-10-23

申请人： George H. Tikijian

发明人： George H. Tikijian

IPC分类号： G01M3/00 ,  G01M3/20 ,  G01N27/62 ,  G01N33/00 ,  G08B21/00 ,  G08B21/16 ,  G08B17/10

CPC分类号： G01N33/0052 ,  G01N27/626 ,  G01N33/0063

摘要： There is a method and disclosed apparatus for detecting for the presence within a gaseous atmosphere of a gas of a concentration above a preset level. The detecting apparatus comprises a sensor including a heater/anode element and a collector/cathode element disposed to define a space therebetween through which the gaseous atmosphere flows. An actuable power supply is coupled to the heater/anode element and to the collector/cathode element for applying power thereto, whereby ionization of the gas causes a current flow through the collector/cathode element of a magnitude proportional to the concentration level of the gas in the gaseous atmosphere. An actuable alarm means provides an indication of the presence of the gas above the preset level. Detecting apparatus control operates the detecting apparatus in a monitoring mode, wherein the power supply is actuated and the alarm deactuated to detect and compare the current flow with the preset level. Upon first detecting current which is equal to or exceeds the preset level, the control operates the detecting apparatus in a leak wait mode, wherein the power supply is actuated and the alarm deactuated to initiate the timing of a period while comparing throughout the period detected current flow with the preset level. If the detected current flow remains equal to or greater than the preset level until the period times out, the control operates the detecting apparatus in an alarm mode, wherein the power supply is deactuated and the alarm is actuated.

摘要翻译： 存在一种方法和公开的装置，用于检测浓度高于预设水平的气体在气体气氛中的存在。 检测装置包括传感器，该传感器包括加热器/阳极元件和集电极/阴极元件，该集电极/阴极元件设置成限定气体大气流过的空间。 可致动的电源耦合到加热器/阳极元件和用于向其施加电力的集电器/阴极元件，由此气体的电离导致电流流过集电极/阴极元件，其大小与气体的浓度水平成正比 在气氛中。 可启动的报警装置提供气体在预设水平以上的存在的指示。 检测装置控制在监视模式下操作检测装置，其中启动电源并且停止警报以检测并比较当前流量与预设电平。 在第一次检测到等于或超过预设电平的电流时，控制器以泄漏等待模式操作检测装置，其中电源被启动，并且在整个周期期间比较检测到的电流的同时，启动警报以启动一段时间的定时 流量与预设水平。 如果检测到的电流保持等于或大于预设电平直到周期超时，则控制器以报警模式操作检测装置，其中电源被停止并且报警被致动。

公开(公告)号：US5357781A

公开(公告)日：1994-10-25

申请号：US8369

申请日：1993-01-22

申请人： George H. Tikijian

发明人： George H. Tikijian

IPC分类号： F25B49/02 ,  G01N1/22 ,  G01N33/00 ,  G01M3/04 ,  G01N1/10

CPC分类号： G01N33/0063 ,  G01N33/0011 ,  G01N33/0052

摘要： There is disclosed a method and apparatus for repetitively taking samples of a predetermined quantity of a test gas in a liquid and introducing these samples to a test chamber. Each sample is agitated to release therefrom the test gas. The released gas is then conveyed to a sensor, which monitors the released gas for the presence of a concentration above the threshold level to produce an alarm indicative thereof. The samples of the test gas in a liquid may be repetitively taken from one zone of a plurality at a time until each zone is sampled. After one sample has been tested in the test chamber, it is discharged therefrom and the test chamber is flushed with a sample of the liquid and test gas taken from the next zone of the plurality before introducing the next sample from the same, next zone.

摘要翻译： 公开了一种在液体中重复取样预定量的测试气体并将这些样品引入测试室的方法和装置。 搅拌每个样品以从其中释放出测试气体。 释放的气体然后被传送到传感器，该传感器监测释放的气体是否存在高于阈值水平的浓度以产生指示其的警报。 液体中的测试气体的样品可以从一次一个区域重复地取出，直到每个区域被采样。 在测试室中测试一个样品后，从其中排出，并从下一个区域引入下一个样品之前，从多个下一个区域中取出的液体样品和测试气体冲洗测试室。