Multi-phase coriolis measurement device and method
US10876874B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2016 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Oct 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for improving flowmeter (5) reliability is provided. The flowmeter (5) has at least one flow tube (130, 130′), at least one pickoff sensor (170L, 170R) attached to the flow tube (130, 130′), at least one driver (180L, 180R) attached to the flow tube (130, 130′), and meter electronics (20) in communication with the at least one pickoff sensor (170L, 170R) and driver (180L, 180R). The method includes the steps of vibrating at least one flow tube (130, 130′) in a drive mode vibration with the at least one driver (180L, 180R), and receiving a sensor signal based on a vibrational response to the drive mode vibration from the at least one pickoff sensor (170L, 170R). At least one flow variable is calculated. A pickoff sensor voltage is measured, and it is determined whether the pickoff sensor voltage is below a predetermined voltage threshold (304). The at least one flow variable is corrected during periods wherein the pickoff sensor voltage is below the predetermined voltage threshold (304).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.