GAS SENSOR
To enable use for a long period even if measured gas includes ingredients deteriorating an electrode function, in a gas sensor using a solid electrolyte.SOLUTION: A gas sensor for measuring the concentration of at least one ingredient in measured gas, includes a sensor pipe made of an ion conductive...
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Zusammenfassung: | To enable use for a long period even if measured gas includes ingredients deteriorating an electrode function, in a gas sensor using a solid electrolyte.SOLUTION: A gas sensor for measuring the concentration of at least one ingredient in measured gas, includes a sensor pipe made of an ion conductive solid electrolyte formed in a thin pipe shape blocked at a tip end, a measuring electrode that is formed on the outer side on the tip end side of the sensor pipe and contacted with the measured gas, a reference electrode that is formed inside the sensor pipe, and is contacted with reference gas, a heater for heating the sensor pipe, a sensor cover that has a ventilation hole covering the sensor pipe and the measured gas side of the heater, and a heat insulation material provided inside the sensor cover. The heat insulation material is made by laminating a heat insulation sheet with a heat insulation property and quartz wool applied with a metal catalyst.SELECTED DRAWING: Figure 5
【課題】 固体電解質を用いるガスセンサにおいて、被測定ガス中に電極機能を劣化させる成分が含まれていても長期使用可能とする。【解決手段】 被測定ガス中の少なくとも1つの成分濃度を測定するためのガスセンサであって、先端が閉塞した細管状に形成されたイオン電導性の固体電解質からなるセンサ管と、前記センサ管の先端側の外側に形成され、被測定ガスに接する測定電極と、前記センサ管の内側に形成され、基準ガスに接する基準電極と、前記センサ管を加熱するヒータと、前記センサ管と前記ヒータの被測定ガス側を覆う通気穴を有するセンサカバーと、前記センサカバー内側に設けた断熱材とを備え、前記断熱材は、断熱性を有する断熱シートと、金属触媒を塗布した石英ウールとを重ねたものであるガスセンサを提供すること。【選択図】 図5 |
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