The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 1984
Filed:
Dec. 19, 1983
Franz-Josef Rohr, Abtsteinach, DE;
Henner Meinhold, Sandhausen, DE;
Brown, Boveri & Cie AG, Manheim-Kafertal, DE;
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.