公开(公告)号：US5528225A

公开(公告)日：1996-06-18

申请号：US328085

申请日：1994-10-24

申请人： Sai Sakai ,  Mikiya Nakatani

发明人： Sai Sakai ,  Mikiya Nakatani

IPC分类号： G01N27/12 ,  G01N33/00 ,  G08B21/00 ,  G08B21/16 ,  G08B17/10

CPC分类号： G01N27/16

摘要： A gas detecting method and apparatus for selectively detecting a fuel gas having methane as a main component thereof and an incomplete combustion gas having carbon monoxide as a main component thereof. A low heat capacity, hot-wire semiconductor type gas sensor used has an oxide semiconductor formed mainly of valency-controlled tin oxide and acting as a sensitive section thereof. An inactive to gas combustion, heat resistant, quadrivalent metallic oxide is mixed into the sensitive section. The sensitive section is alternately switched between a fuel gas detecting temperature and an incomplete combustion gas detecting temperature.

摘要翻译： 一种用于选择性地检测以甲烷为主要成分的燃料气体和以一氧化碳为主要成分的不完全燃烧气体的气体检测方法和装置。 所使用的低热容量，热线半导体型气体传感器具有主要由价态控制的氧化锡形成并用作其敏感部分的氧化物半导体。 对气体燃烧无活性，耐热四价金属氧化物混入敏感部分。 敏感部分交替地在燃料气体检测温度和不完全燃烧气体检测温度之间切换。