Method and apparatus for automatic flow-through digital refracto

Details Method and apparatus for automatic flow-through digital refracto Method and apparatus for automatic flow-through digital refracto

1980-02-28

1983-05-03

Arnold, Bruce Y.

Optics: measuring and testing

Refraction testing

Prism forming fluid specimen container

G01N 2141

Patent

active

043818951

ABSTRACT:
Method and apparatus for determining the concentration of dissolved solids in a sample solution. A refractometer has an enclosing opaque housing, a light source directing a substantially collimated monochromatic light beam through, and a hollow transparent-walled prismatic container adopted for holding a liquid solution to be tested. A light sensor is disposed in the refracted path of the light beam and responds to the exact refraction of the beam caused by passing through the liquid solution. A display is actuated by the light sensor and digitally displays the exact refraction as a function of the concentration of dissolved solids in the liquid sample. Method and apparatus are provided for determining the presence of a sufficient amount of the sample and for automatically commencing the testing in the refractometer.

REFERENCES:
patent: 2483102 (1949-09-01), Pierson
patent: 3713738 (1973-01-01), Bernhardt
patent: 3751168 (1973-08-01), Llop et al.
patent: 4008405 (1977-02-01), Neumann et al.
patent: 4193004 (1980-03-01), Lobdell et al.

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