Apparatus for a liquid chemical concentration analysis system

Details Apparatus for a liquid chemical concentration analysis system Apparatus for a liquid chemical concentration analysis system

2008-01-15

2008-01-15

Pham, Hoa Q. (Department: 2886)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

C356S128000, C356S136000

Reexamination Certificate

active

11235622

ABSTRACT:
An apparatus utilizes optical reflectivity (REF) to measure concentrations in liquids. The REF optical system is packaged in a compact and cost-effective form factor. An electronic circuit drives the optical system. The miniaturized REF sensor is situated in an optical-fluidic cell or an optical-fluidic manifold with an optical window in contact with the liquid. Changes in a total internal reflection (TIR) signal are sensitive to temperature and concentration of the liquid. These changes in the TIR signal are used to accurately determine the concentration in the liquid. The liquids may be either static or dynamic.

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