Oxygen sensor to determine the oxygen content in gases

Details Oxygen sensor to determine the oxygen content in gases Oxygen sensor to determine the oxygen content in gases

1978-03-06

1979-06-12

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204 1T, G01N 2746

Patent

active

041579488

ABSTRACT:
To provide rapid, external heating of a solid electrolyte body exposed to gases, the solid electrolyte is applied, for example by plasma spraying, to a disk-like metallic carrier plate which has an insulated coating thereover, in which the carrier plate is formed with openings throughout its circumference leaving connecting strips between the openings. Heating current conductors are connected at locations opposite the openings so that the connecting strips will form resistance paths heating the electrolyte body on the plate. A catalytically inactive electrode is applied to the electrolyte at one side of the plate, and a catalytically active coating is applied to the electrolyte at the other side of the plate. For use in sensing oxygen content of automotive vehicles, the plate is preferably held by spacers on a socket, and the spacers form terminals for both one of the heating electrodes and the electrolyte body electrodes, the other terminals being suitably connected to the plate, and to the electrolyte body, respectively.

REFERENCES:
patent: 3546086 (1970-12-01), Satles
patent: 3597345 (1971-08-01), Hickam et al.
patent: 3676820 (1972-07-01), Taguchi
patent: 3909385 (1975-09-01), Spielberg et al.
patent: 4005001 (1977-01-01), Pebler
patent: 4013943 (1977-03-01), Chou et al.
patent: 4049524 (1977-09-01), Togawa et al.

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