Level measurement device

Details Level measurement device Level measurement device

1979-12-18

1982-12-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

G01N 1506

Patent

active

043651658

ABSTRACT:
A level measuring device suitable for measuring the level of any substance, advantageously but not necessarily dangerous substances whether due to heat, toxicity or others, with or without anti-oxidization superficial layers, including in mutual cooperation and coordination an intense light source illuminating a limited and restricted area on the surface of the medium whose level is to be measured, a receiver-perceptor processor so arranged that at least part of the optical control axis is at an angle in relation to the incidence optical axis of said light source, therebeing advantageously present one or more regulating means responsive to the ambient light and to possible infrared rays or the like, regulating means responsive to absorption and reflection features of the light by the material of the surface and the medium in which the rays propagate, alarm means and regulation means.

REFERENCES:
V. N. Kompan, V. I. Fel'dman, and I. F. Andryukov article entitled Photoelectric Indicator of Melt Level in Glassmaking Furnaces, U.D.C. 666.1.031.228-55, Translated from Steklo i Keramika, No. 9, pp. 21-23, Sep. 1975.

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