Fluid composition sensor using reflected or refracted light moni

Details Fluid composition sensor using reflected or refracted light moni Fluid composition sensor using reflected or refracted light moni

1994-03-24

1995-08-15

Evans, F. L.

Optics: measuring and testing

Refraction testing

Refractive rod engages specimen

356136, 73 3004, 73705, G01N 2141

Patent

active

054424356

ABSTRACT:
A gas density sensor having a prism in contact with a fluid whose density is determined. A light source shines light into the prism. The light is reflected off prism surfaces in contact with the fluid. As the fluid density changes, the amount of light reflecting off these surfaces changes depending upon fluid density. A detector placed to receive light reflecting off the surfaces determines density from sensed light.

REFERENCES:
patent: 3056297 (1962-10-01), Duke
patent: 3311014 (1967-03-01), Klitt et al.
patent: 3932038 (1976-01-01), Schweizer et al.
patent: 4306805 (1981-12-01), Arrington
"Data Book" Optek Technology, Inc., 1989, 1990, pp. 17-20.
Ward's Auto World Magazine--May 1994, 2 pages.

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