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Gas sensor for the detection of gas components, e.g. in incinerator and internal combustion motor exhaust emissions, has a metal oxide semiconductor sensor layer dosed or coated with a catalyst material
Gas sensor for the detection of gas components, e.g. in incinerator and internal combustion motor exhaust emissions, has a metal oxide semiconductor sensor layer dosed or coated with a catalyst material
The gas sensor has a metal oxide semiconductor sensor layer. At least one gas component is given a catalytic conversion where the sum of the gas components can be detected. The sensor layer is dosed or coated with a catalyst material. For the conversion of nitric oxide (NO) to nitrogen dioxide (NO2) it is oxidized together with oxygen from the air at an active catalyst cluster (19) on the sensor surface (20). The NO2 is adsorbed, and a resistance change is detected.
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机译:气体传感器具有金属氧化物半导体传感器层。至少一种气体组分被给予催化转化,在该催化转化中可以检测到气体组分的总和。传感器层被添加或涂覆有催化剂材料。为了将一氧化氮(NO)转化为二氧化氮(NO2),它与空气中的氧气一起在传感器表面(20)上的活性催化剂簇(19)处被氧化。 NO 2被吸附,并且检测到电阻变化。
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