Sensing device

Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture

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G01N 2518

Patent

active

043454593

ABSTRACT:
A device for sensing a substance on the surface of a liquid of the type including a float and a sensing element mounted on the float for extending into the liquid, includes a plastic encasement enclosing all portions of the element to be exposed to the liquid for preventing interference with the operation of the element by substances in the liquid other than the substance to be sensed.

REFERENCES:
patent: 3720797 (1973-03-01), Gunn et al.
patent: 3918034 (1975-11-01), Orth, Jr.
patent: 3946625 (1976-03-01), Miyazaki et al.
patent: 4116045 (1978-09-01), Potter
patent: 4131773 (1978-12-01), Maham et al.
patent: 4221125 (1980-09-01), Oliver et al.
patent: 4223552 (1980-09-01), Goldstein

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