Oxygen concentration sensor

Details Oxygen concentration sensor Oxygen concentration sensor

1981-03-23

1982-12-07

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

G01N 2758

Patent

active

043626092

ABSTRACT:
An oxygen concentration sensor including a solid electrolyte member having two portions, one portion being exposed to a gas of interest and the other portion being exposed to the atmosphere, an inner cover formed with a first space communicating portion arranged to communicate with the other portion of the solid electrolyte member, and a water-proof cover enclosing the inner cover to define a ventilating passage between the inner cover and the water-proof cover and formed with a second space communicating portion maintaining the first space communicating portion of the inner cover in communication with the atmosphere through the ventilating passage. The second space communicating portion of the water-proof cover is axially spaced apart from the first space communicating portion of the inner cover by a predetermined distance. Also included is structure to prohibit the flow of water through said ventilating passage. The second space communicating portion is separated from this structure.

REFERENCES:
patent: 4057477 (1977-11-01), Weyl et al.
patent: 4123131 (1978-10-01), Pearce et al.
patent: 4127464 (1978-11-01), Ichikawa et al.
patent: 4141813 (1979-02-01), Kita et al.
patent: 4187163 (1980-02-01), Steinke et al.

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