Electrochemical measuring cell

Details Electrochemical measuring cell Electrochemical measuring cell

1978-08-22

1980-11-11

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

G01N 2758

Patent

active

042331420

ABSTRACT:
An electrochemical measuring cell for determining the oxygen content in exhaust gases from internal-combustion engines and combustions having an ion-conducting solid electrolyte with a measuring electrode as a first layer on the solid electrolyte and a reference electrode as a second layer on the solid electrolyte. A third layer coats the first layer measuring electrode and contains a material with a high partial oxygen pressure to obtain a characteristic U=f(.lambda.) which has a small slope in the range of the air number of about 1; a material with a medium partial oxygen pressure to obtain a characteristic with a medium slope; and a material with low partial oxygen pressure to obtain a characteristic with a steep slope.

REFERENCES:
patent: Re28792 (1976-04-01), Ruka et al.
patent: 3841987 (1974-10-01), Friese et al.
patent: 3922204 (1975-11-01), Tseung et al.
patent: 3929670 (1975-12-01), Kudo et al.
patent: 3978006 (1976-08-01), Topp et al.
patent: 4060498 (1977-11-01), Kawagoshi et al.

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