Method for measuring the oxygen concentration in gas mixtures

Details Method for measuring the oxygen concentration in gas mixtures Method for measuring the oxygen concentration in gas mixtures

1983-12-19

1984-09-18

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204406, 204425, G01N 2758

Patent

active

044722478

ABSTRACT:
Method for measuring the free oxygen concentration in gas mixtures, especially combustion gases, with an electrochemical measuring device which comprises an oxygen ion-conducting solid electrolyte and two electrodes to which the supply voltage U.sub.s is fed. The supply voltage U.sub.s is formed from the sum of at least two voltage components U.sub.a and U.sub.v. The first voltage component U.sub.a is kept at a constant predeterminable value which is required for ionizing the free oxygen. The second voltage component U.sub.v is kept variable and its respective value is determined as a function of the magnitude of the probe current I.sub.s flowing between the electrodes.

REFERENCES:
patent: 4355618 (1982-10-01), Muller et al.

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