Vibratory meter and method for determining resonant frequency
US9395236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2011 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Jun 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N9/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vibratory meter (5) is provided, including one or more flow conduits (103), one or more pickoff sensors (105, 105′), and a driver (104). Meter electronics (20) is configured to vibrate the one or more flow conduits (103) using a drive signal including an initial vibration frequency and to receive a pickoff sensor signal from the one or more pickoff sensors (105, 105′) in response, iteratively offset a phase difference between the drive signal and the pickoff sensor signal by a predetermined phase increment and measure a resulting vibrational frequency and amplitude, with the offsetting operatively sweeping the vibration frequency over a predetermined vibration frequency range and therefore generating a plurality of vibration amplitudes and a corresponding plurality of vibration frequencies, and determine a substantially maximum amplitude response in the plurality of vibration amplitudes and designate the corresponding vibration frequency as comprising the resonant frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.