Multi-channel flow sensor with extended flow range and faster response
US8056424B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Sep 17, 2009 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Nov 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/3259
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid flow device having a vortex generator in two or more channels, each channel having a section to scale the flow velocity to a desirable range of Reynolds number, and vortex shedding and/or vortex passing frequency. Said flow device may be used as a flow meter by measuring the vortex shedding/passing frequency from each vortex generator. Further improvement is had by selecting the highest usable frequency, with its corresponding scaling factor, as the most-precise and fastest-response measurement output of the flow-measuring device. Still further improvement is obtained by cross-checking all usable frequencies against each other to detect failure of one or more vortex shedding/passing sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.