Optics: measuring and testing – Refraction testing – Prism engaging specimen
Patent
1974-10-04
1976-11-09
Corbin, John K.
Optics: measuring and testing
Refraction testing
Prism engaging specimen
250574, 356208, G01N 2106
Patent
active
039907953
ABSTRACT:
A turbidity measuring instrument has a chamber through which liquid to be examined flows, the chamber having a constant head inlet and a weir overflow outlet so that a static liquid level is maintained in the chamber, light being directed vertically into the liquid from above and back-scattered light from particles suspended in the liquid being measured photoelectrically by a detector head located in a sealed housing with a light source above the liquid level.
REFERENCES:
patent: 2215211 (1940-09-01), Devol
patent: 3691391 (1972-09-01), Kishi
Corbin John K.
Partech (Electronics) Limited
Rosenberger Richard A.
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