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:
May. 05, 1987
Filed:
Jul. 11, 1985
David F Ross, Euclid, OH (US);
The Babcock & Wilcox Company, New Orleans, LA (US);
Abstract
A modified zirconia oxygen sensor is disclosed wherein gas flows through inner (14) and outer tubes (12) and wherein one electrode (18) is attached to the inner surface of the inner tube (14), and the second electrode (16) is attached to the outer surface of the inner tube (14). The outer catalytic surface of inner tube (14) is made inert so that an oxygen potential difference is produced between the electrodes (16, 18) which results in a voltage output, as read by the oxygen analyzer (42), which is proportional to the initial level of the combustible in the gas. The utilization of inner (14) and outer tubes (12) wherein the portion of the gas sample contacting the active electrode (18) is maintained separate from the portion of the gas sample contacting the inactive electrode (16) prevents back or edge diffusion between the electrodes.