Micro fuel-cell oxygen gas sensor

Details Micro fuel-cell oxygen gas sensor Micro fuel-cell oxygen gas sensor

1993-05-03

1994-08-02

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415317, 20415322, 204412, 204415, 204431, 204432, 204258, 204265, 204277, 204278, G01N 2726

Patent

active

053342950

ABSTRACT:
An oxygen sensor for measuring oxygen in the ppb range. The sensor comprises an electrochemical cell. The oxygen is metered to the cathode based on gaseous phase diffusion to provide a measurement proportional to volumetric concentration. Hydrogen is metered to the anode in an amount in excess of the oxygen being reduced at the cathode. A current is generated which is linear to the volumetric concentration of the oxygen in the sample gas. The concentration of the oxygen is measured based on the current generated.

REFERENCES:
patent: 3929587 (1975-12-01), Gallagher
patent: 4960497 (1990-10-01), Gallagher, deceased

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