CO gas detecting device and circuit for driving the same

Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample

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Details

73 23, 324715, 338225D, 422 90, G01N 2716

Patent

active

047924330

ABSTRACT:
Disclosed is a CO gas detecting device which comprises a CO gas sensor provided with a gas sensitive member made of SnO.sub.2, ZnO, Fe.sub.2 O.sub.3 or the like, a pair of electrodes provided on said gas sensitive member, and a catalyst layer comprising at least one kind of catalyst metals of Pt, Pd and Rh and at least one kind of carriers of Al.sub.2 O.sub.3, ZrO.sub.2 and SiO.sub.2, provided on said gas sensitive member; and a reference sensor substantially without sensitivity to CO gas provided with a gas sensitive member similar to the above gas sensitive member, a pair of electrodes provided on said gas sensitive member and a catalyst layer comprising Ag and at least one kind of carriers of Al.sub.2 O.sub.3, ZrO.sub.2 and SiO.sub.2, provided on said gas sensitive member. Also disclosed is a circuit for driving the device.

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