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:
Mar. 23, 2021
Filed:
Dec. 18, 2018
Micro Motion, Inc., Boulder, CO (US);
Andrew S. Kravitz, Erie, CO (US);
Craig B. McAnally, Thornton, CO (US);
Micro Motion, Inc., Boulder, CO (US);
Abstract
A vibratory sensor () includes a vibratory element (), a receiver circuit () that receives a vibration signal from the vibratory element (), and a drive circuit () that generates a drive signal. The drive circuit () includes a closed-loop drive () and an open-loop drive (). The meter electronics () vibrates the vibratory element () commencing at a commanded first frequency and in an open-loop manner to achieve a first target phase difference ϕfor a fluid being characterized and determines a corresponding first frequency point ω, vibrates the vibratory element () commencing at a commanded second frequency and in the open-loop manner to achieve a second target phase difference ϕand determines a corresponding second frequency point ω, and determines a viscosity of the fluid being characterized using the first frequency point ωand the second frequency point ω