Measuring and testing – Fluid pressure gauge – Photoelectric
Patent
1993-01-21
1994-10-04
Chilcot, Jr., Richard E.
Measuring and testing
Fluid pressure gauge
Photoelectric
25023119, G01L 708
Patent
active
053515471
ABSTRACT:
An optical pressure transducer includes a body for supporting therein both an input optical fiber and an output optical fiber. A light source generates input light to the input optical fiber. A force responsive diaphragm is secured to the body and deflects in response to sensed pressure. A fixed reflector and a moveable reflector, which is attached to and moves with the diaphragm, are disposed in the optical path between the input and output optical fibers and reflect at least a portion of the input light from the input optical fiber to the output optical fiber. The amount of light reflected depends upon the deflection of the diaphragm. A system for monitoring and controlling the light source, including an optical detector in a feedback arrangement, is provided such that the amount of light generated by the light source remains constant and maximized.
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Navy Technical Disclosure Bulletin, Theodore Y. Wu, Jul. 1979, vol. 4, No. 7, pp. 9-12.
Grudzien, Jr. Christopher P.
Panagotopulos Louis
Chilcot Jr. Richard E.
Dynisco, Inc.
Oen William L.
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