Method and apparatus for concentration measurement by the quanti

Details Method and apparatus for concentration measurement by the quanti Method and apparatus for concentration measurement by the quanti

1990-06-19

1991-11-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356128, G01N 1506

Patent

active

050685422

ABSTRACT:
A concentration measuring method and an apparatus measures the concentration of an objective solvent in a mixed solution by flowing a mixed solution through a tube, transmitting light through the mixed solution as it flows through the tubing and measuring the quantity of light transmitted through the fluid. The concentration of the objective solvent in the mixed solution is measured on the basis of either the quantity of light transmitted, the diameter of a light beam received, or a point of convergence of the light transmitted through the mixed solution. These factors being dependent on the concentration of the objective solvent in the mixed solution.

REFERENCES:
patent: 3950104 (1976-04-01), Munk
patent: 4135100 (1979-01-01), Harada et al.
patent: 4886366 (1989-12-01), Kogure
patent: 4967187 (1990-10-01), Dumas et al.

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