Method of making oxygen sensor

Details Method of making oxygen sensor Method of making oxygen sensor

1977-12-02

1978-10-24

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

123119E, 427125, 29570, G01N 2746

Patent

active

041219899

ABSTRACT:
Oxygen sensor specifically adapted for use in an industrial air/fuel control system provides an ability to measure actual oxygen content quantitatively in industrial situations where off-stoichiometric air/fuel control is desired. The sensor is quite simple and is easy to use since it provides accurate reproducible readings from sensor to sensor and for long periods. The leads to the solid electrolyte disc are of the same material as the electrodes and extend to the remote end of the sensor so as to eliminate dissimilar material junctions. Felted ceramic discs applied to the wet paste electrodes before firing serve to filter the gases contacting the sensor and act as wicks for permitting uniform dispersion of chloroplatinic acid to the paste electrodes.

REFERENCES:
patent: 3723589 (1973-03-01), Kennedy
patent: 3767469 (1973-10-01), Flais et al.
patent: 3841987 (1974-10-01), Friese et al.
patent: 3935089 (1976-01-01), Togawa et al.
patent: 3940327 (1976-02-01), Wagner
patent: 3965552 (1976-06-01), Rutt
patent: 3978006 (1976-08-01), Topp et al.
patent: 4040929 (1977-08-01), Bauer
patent: 4040930 (1977-08-01), Dillon

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