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. 31, 2020
Filed:
Jul. 27, 2015
Micro Motion, Inc., Boulder, CO (US);
Matthew Joseph Rensing, Cincinnati, OH (US);
Christopher George Larsen, Cincinnati, OH (US);
Timothy J. Cunningham, Boulder, CO (US);
Micro Motion, Inc., Boulder, CO (US);
Abstract
A meter verification method for a vibratory flowmeter () is provided, comprising vibrating a sensor assembly () of the vibratory flowmeter () with a plurality of test tones in a vibration mode using a driver (), wherein the plurality of test tones is applied substantially instantly, in the absence of a ramp function. A driver () current is determined, and response voltage of pickoff sensors (L,R) are determined for the vibration mode. The instantaneous frequency of the pickoff sensor (L,R) signals is measured, and a filter is applied to isolate the response at each of the plurality of test tones. The filter is also applied to the instantaneous frequency measurements. The same delay is applied to the frequency measurements and the response at each of the test tones. A meter stiffness value () is generated using the current () and the response voltage (), and proper operation of the vibratory flowmeter () is verified using the meter stiffness value ().