Method of and device for determining when a liquid-renewal proce

Details Method of and device for determining when a liquid-renewal proce Method of and device for determining when a liquid-renewal proce

1985-01-15

1987-01-27

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

134113, 250574, 356341, 356343, G01N 2153

Patent

active

046391371

ABSTRACT:
A method of renewing a used liquid for reuse of the same includes establishing a body of a reference liquid for comparison with renewed used liquid, and establishing a separate body of the used liquid adjacent the body of reference liquid. An incident light beam is produced for consecutive traversal of the body of used liquid and the body of reference liquid, the particles in the two liquid bodies thereby diffusing the light beam to provide respective luminous fluxes off the axis of the incident light beam. The two luminous light fluxes are separately detected and compared. This procedure is automatically terminated when the detected luminous light fluxes are substantially equal to each other.

REFERENCES:
patent: 3200700 (1965-08-01), Topol
patent: 3870417 (1975-03-01), Bashank
patent: 4257708 (1981-03-01), Fukuda

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