Method and apparatus for fiber optic backscattered light measure

Details Method and apparatus for fiber optic backscattered light measure Method and apparatus for fiber optic backscattered light measure

1988-09-06

1990-12-18

Nelsm, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 28, G01N 1506

Patent

active

049788639

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.

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patent: 4743753 (1988-05-01), Cheng

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