Oxygen sensor

Details Oxygen sensor Oxygen sensor

1989-10-04

1990-08-07

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204424, G01N 27409

Patent

active

049465775

ABSTRACT:
An oxygen sensor having an oxygen sensing element which includes a solid electrolyte body made of an oxygen-ion conductive solid electrolyte material, and a measuring electrode and a reference electrode formed on the solid electrolyte body, the measuring and reference electrodes, respectively, communicating with a measurement gas, and a reference gas having a predetermined oxygen concentration, so that an electromotive force is induced between the measuring and reference electrodes, based on a difference in oxygen concentration between the measurement gas and the reference gas. The measuring electrode includes a conductor principally consisting of platinum, and lead and/or zinc serving as an activation component for the platinum. An amount of the lead and/or zinc per 1 mg of the platinum is within a range of 0.2-100 .mu.g.

REFERENCES:
patent: 3843400 (1974-10-01), Radford et al.
patent: 4514277 (1985-04-01), Sakurai et al.
patent: 4584086 (1986-04-01), Hayakawa et al.
patent: 4655892 (1987-04-01), Satta et al.

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