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:
Aug. 10, 1993
Filed:
Apr. 13, 1992
Montgomery R Coats, Round Rock, TX (US);
Jack C Cook, Georgetown, TX (US);
Glen Beatty, Round Rock, TX (US);
Other;
Abstract
A non-intrusive mass flow measuring apparatus includes a sensor unit and a processor unit. The sensor unit includes a sensor conduit, a heating element, and three separate temperature sensor elements. The three temperature sensor elements are spaced out along the length of the sensor conduit from the heating element. The middle, compensating temperature sensor element, enables the coefficient of conductive heat transfer along the conduit to be decoupled from the coefficient of convective heat transfer from the fluid, from which mass flow may be derived. A processor uses the temperatures sensed by the three sensors to determine a normalized temperature parameter related to the coefficient of convective heat transfer, and then utilizes temperature data and the normalized temperature parameter in a preferably empirically determined relationship to determine a mass flow value.