Gas sensor and sensing device

Details Gas sensor and sensing device Gas sensor and sensing device

1995-03-10

1996-06-04

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204430, 204431, 204415, 422 83, 422 88, 422 98, G01N 2726

Patent

active

055229808

ABSTRACT:
A gas sensor comprises a substrate on which are mounted three cells. Each cell includes an interdigitated capacitor defined by a pair of comb structure, electrically conductive tracks with the fingers of the combs interleaved. The tracks of each capacitor are covered by an insulating and chemically inert protective coating of an electrolyte. A monitor monitors one of a resistive component and a capacitive component of the relative dielectric constant of the electrolyte independently of the other component.

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