Self-compensating fiber optic flow sensor having an end of a...

Details Self-compensating fiber optic flow sensor having an end of a... Self-compensating fiber optic flow sensor having an end of a...

2006-05-16

2006-05-16

Le, Que T. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S227140

Reexamination Certificate

active

07045767

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.

REFERENCES:
patent: 3915570 (1975-10-01), Skala
patent: 5247490 (1993-09-01), Goepel et al.
patent: 6426796 (2002-07-01), Pulliam et al.
patent: 6470758 (2002-10-01), Bernard et al.

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