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:
Dec. 25, 2018
Filed:
Sep. 30, 2014
Applicant:
Rosemount Inc., Shakopee, MN (US);
Inventors:
Pavel Shuk, Copley, OH (US);
Robert F. Jantz, Tustin, CA (US);
Assignee:
Rosemount Inc., Shakopee, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/407 (2006.01); G01N 27/406 (2006.01);
U.S. Cl.
CPC ...
G01N 27/4065 (2013.01); G01N 27/407 (2013.01);
Abstract
A process analytic instrument includes a measurement cell and an analyzer circuit. The measurement cell includes a solid state electrochemical oxygen sensor configured for exposure to a process gas. The analyzer circuit is coupled to the solid state electrochemical sensor to measure an electrical parameter of the solid state electrochemical sensor and provide an output indicative of oxygen in the process gas. A DC bias circuit is configured to selectably bias the solid state electrochemical oxygen sensor with a direct current when the solid state electrochemical sensor is in a reducing environment.