Zirconia cell O.sub.2 sensor for respiratory gas analysis

Details Zirconia cell O.sub.2 sensor for respiratory gas analysis Zirconia cell O.sub.2 sensor for respiratory gas analysis

1989-03-20

1991-02-26

Williams, Hezron E.

Measuring and testing

Gas analysis

Pressure

128 34, 73 3105, G01N 2712

Patent

active

049952560

ABSTRACT:
A zirconia oxygen sensor is disclosed which is especially designed for sensing respiratory gases on a breath-by-breath basis. In order to obtain a sufficiently high response time necessary for breath-by-breath gas analysis, a commercially-available zirconia ceramic element is dimensionally tailored to cooperate with a manifold member such that the volume of the gas being analyzed is extremely small, yet uniformly distributed over an internal surface of the zirconia cell. Cooperating with the zirconia cell and the manifold are a set of spring contacts which perform the dual function of providing an electrical terminal and acting as a gas-type seal when the manifold is compressed against the end of the cell.

REFERENCES:
patent: 4225842 (1980-09-01), Schlesselman et al.
patent: 4283256 (1981-08-01), Howard et al.
patent: 4532492 (1985-07-01), Esper et al.
patent: 4535316 (1985-08-01), Wertheimer et al.

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