Vibrating tube fiber optic pressure transducer with light-powere

Details Vibrating tube fiber optic pressure transducer with light-powere Vibrating tube fiber optic pressure transducer with light-powere

1989-09-20

1991-04-30

Orsino, Joseph A.

Measuring and testing

Fluid pressure gauge

Vibration type

73705, 7386259, 25022714, 25023119, G01L 1100

Patent

active

050107704

ABSTRACT:
A fiber optic transducer system to measure the pressure within a vibrating tube is disclosed. Light pulses produced by a laser diode are transmitted through an optical fiber to a photo diode which converts same into current pulses which are, in turn, converted into magnetic pulses by an electromagnet. A permanent magnet attached to the vibrating tube is caused to vibrate in response to the magnetic pulses applied thereto. A mirror attached to the vibrating tube intercepts continuous light transmitted by a second optical fiber and reflects same to a detector which measures displacement of the mirror via intensity modulation or phase differences between the transmitted light and the reflected light.

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patent: 4853534 (1989-08-01), Dakin
C. A. Wade and A. Dandridge, "An Optical Fiber Flowmeter Based on the Coriolis Effect," SPIE Proc. No. 985, p. 299, 1988.

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