Self-compensating fiber optic flow sensor having an end of a fiber optics element and a reflective surface within a tube
US7045767B2 · kind B2 · utility
5Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2003 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | May 27, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flow rate fiber optic transducer is made self-compensating for both temperature and pressure by using preferably well-matched integral Fabry-Perot sensors symmetrically located around a cantilever-like structure. Common mode rejection signal processing of the outputs allows substantially all effects of both temperature and pressure to be compensated. Additionally, the integral sensors can individually be made insensitive to temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.