Flow meter diagnostic processing
US8639464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2008 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Dec 6, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and associated systems and methods relate to automated learning of a baseline differential pressure (dP) characteristic to monitor the performance of a field-installed gas flow meter by comparing on-line dP measurements to the learned baseline dP characteristic. In an exemplary embodiment, a first baseline dP characteristic may be learned in a first mode over a first predetermined period of time according to a first set of learning criteria, and a second baseline dP characteristic may be learned in a second mode over a second predetermined period of time according to a second set of learning criteria. The first period of time may be substantially shorter than the second period of time. The first set of criteria may be substantially more relaxed than the second set of criteria. During the second mode, meter performance degradation may be diagnosed by comparing measured dP against the first baseline dP characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.