Method and apparatus for fiber optic backscattered light measurement to determine flow rates of multi-phase streams
US4978863A · kind A · utility
31Cited by
11References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 6, 1988 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Sep 6, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/712
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Flow rates of multi-phase streams may be determined by use of a fiber optic probe which establishes an illuminated sensing zone of finite dimensions. The probe collects light backscattered from the zone, the collected light being converted by a photodiode to voltage waveforms. Flow rate is determined by sampling voltage waveforms at discrete points in time, the sample being digitized and the digits being autocorrelated for such discrete points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.