System to detect poor process ground connections
US7921734B2 · kind B2 · utility
9Cited by
206References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2009 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Jun 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic flowmeter is disclosed that includes a pair of electrodes coupled to a process fluid and a diagnostic circuit coupled to the pair of electrodes to monitor a common mode signal. The diagnostic circuit is adapted to detect a poor ground connection associated with at least one electrode of the pair of electrodes based on line noise associated with the common mode signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.