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:
Apr. 19, 2016
Filed:
Mar. 26, 2014
Applicant:
Rosemount Inc., Chanhassen, MN (US);
Inventor:
Charles Ray Willcox, Chanhassen, MN (US);
Assignee:
Rosemount Inc., Chanhassen, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L 9/12 (2006.01); G01L 9/00 (2006.01); G01L 19/02 (2006.01);
U.S. Cl.
CPC ...
G01L 9/0072 (2013.01); G01L 9/0041 (2013.01); G01L 19/02 (2013.01);
Abstract
A differential pressure sensor for sensing a differential pressure of a process fluid, includes a sensor body having a sensor cavity formed therein with a cavity profile. A diaphragm in the sensor cavity deflects in response to an applied differential pressure. The diaphragm has a diaphragm profile. A gap formed between the cavity profile and the diaphragm profile changes as a function of the differential pressure. At least one of the cavity profile and diaphragm profile changes as a function of a line pressure to compensate for changes in the gap due to deformation of the sensor body from the line pressure.