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. 28, 2013
Filed:
Aug. 26, 2010
Applicants:
Jason H. Rud, Mayer, MN (US);
Loren M. Engelstad, Norwood, MN (US);
Inventors:
Jason H. Rud, Mayer, MN (US);
Loren M. Engelstad, Norwood, MN (US);
Assignee:
Rosemount Inc., Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K 7/20 (2006.01); G01R 27/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for measuring a temperature of a process fluid includes a resistance based temperature sensor (RTD) sensor configured to thermally couple to the process fluid. First and second electrical connections are configured to apply a current through the RTD. Measurement circuitry is configured to measure a voltage across the RTD and identify a degraded connection to the RTD and responsively measure a temperature of the process fluid using the electrical connections.