Gas sensing element

Details Gas sensing element Gas sensing element

2005-09-27

2005-09-27

Olsen, Kaj K. (Department: 1753)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S427000, C073S023320

Reexamination Certificate

active

06949175

ABSTRACT:
A gas sensing element includes a solid electrolytic substrate having oxygen ion conductivity, a measured gas side electrode provided on a surface of the solid electrolytic substrate so as to be exposed to a measured gas, and a reference gas side electrode provided on another surface of the solid electrolytic substrate so as to be exposed to a reference gas. The measured gas side electrode is covered by a porous electrode protecting layer. A limit current density of the electrode protecting layer is in a range from 0.04 mA/mm2to 0.15 mA/mm2on a unit area of the reference gas side electrode.

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