Suspended solids analyzer using multiple light sources and photo

Details Suspended solids analyzer using multiple light sources and photo Suspended solids analyzer using multiple light sources and photo

1976-07-28

1978-03-21

Corbin, John K.

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

250565, 356206, G01N 2126

Patent

active

040800768

ABSTRACT:
A method of analyzing suspended solids, particularly in flowing liquids, in which a plurality of light sources and photodetectors are employed in predetermined arrangement to provide a relatively short light path and a relatively long light path for each photodetector, with the light sources being actuated in predetermined off-on sequence, to provide corresponding periods of illumination from each light source and intermediate periods of no illumination, with the no illumination value representing ambient light, and so combining the respective light values so obtained to provide values representing not only the suspended solid content but also comparison values indicating the presence of failures of the respective light sources and photodetectors, and apparatus for practicing the method.

REFERENCES:
patent: 3146293 (1964-08-01), Lesage
patent: 3652850 (1972-03-01), Briggs
patent: 3659943 (1972-05-01), Goolsby
patent: 3684378 (1972-08-01), Lord
patent: 3955096 (1976-05-01), Faulhaber

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