Refractometer for fluids

Details Refractometer for fluids Refractometer for fluids

1986-10-14

1989-02-21

Rosenberger, Richard A.

Optics: measuring and testing

Refraction testing

Refractive rod engages specimen

G01N 2114

Patent

active

048060135

ABSTRACT:
There is provided an apparatus for measuring the refractive index of fluids. The apparatus comprises a substantially U-shaped sensor rod made of a transparent material and is submersible in the fluid. The bent portion of the sensor rod has a diameter of curvature at least two times larger than the diameter of the sensor rod, and chosen so as to optimize sensitivity for a given range of indices. The two ends of the U-shaped sensor rod are connectable to a housing and a light source inside the housing has optical access to the face of one of the sensor-rod ends. A light detector means also disposed inside the housing has optical access to the face of the other one of the sensor rod ends.

REFERENCES:
patent: 3282149 (1966-11-01), Shaw et al.
patent: 3311014 (1967-03-01), Witt et al.
patent: 3513319 (1970-05-01), Broerman
patent: 4225245 (1980-09-01), Roiret et al.
patent: 4306805 (1981-12-01), Arrington

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