发明授权
- 专利标题： Gas detection sensor
- 专利标题（中）： 气体检测传感器
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申请号： US09979039申请日： 2001-11-15
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公开(公告)号： US06622543B1公开(公告)日： 2003-09-23
- 发明人: Tadahiro Ohmi , Kouji Kawada , Nobukazu Ikeda , Akihiro Morimoto , Yukio Minami , Katunori Komehana , Teruo Honiden
- 申请人： Tadahiro Ohmi , Kouji Kawada , Nobukazu Ikeda , Akihiro Morimoto , Yukio Minami , Katunori Komehana , Teruo Honiden
- 主分类号： G01N2532
- IPC分类号： G01N2532
摘要：
A gas detection sensor permits precise measurement of the concentration of flammable gas in a detection or subject gas and the concentration of oxygen in a detection gas containing flammable gases. In the sensor, the heating of the sensor by contact catalytic reaction of flammable gas gives off a detection signal of the flammable gas. The gas detection sensor has a first detection sensor including a diaphragm having a platinum coat on a side which the flowing detection gas comes in contact with, and a thermocouple having respective ends of two different metals placed close to each other and fixed on the side of the diaphragm not coming in contact with the flowing detection gas and which is heated by the contact catalytic reaction of flammable gas. A second detection sensor similar to the first detection sensor detects the temperature of the flowing detection gas.
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