Method of and means for determining the level of a metallic bath

Details Method of and means for determining the level of a metallic bath Method of and means for determining the level of a metallic bath

1977-10-26

1979-07-03

Grimm, Siegfried H.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

73293, 137395, 164 4, 164 83, 164155, 164449, 222 64, 222594, 250577, 250235, 340619, B22D 102, B22D 1116, G01F 2300, G05D 912

Patent

active

041601688

ABSTRACT:
The level of a metallic bath, e.g. of an iron melt in an ingot mold, is determined by recurrent electro-optical scanning of the interior of the vessel along a narrow vertical strip zone. The output signals of the scanner are processed in an arithmetic unit which averages successive readings, to compensate for fluctuations, and may also receive a corrective signal in order to offset periodic level changes due to an intentional rocking of the vessel. The arithmetic unit may work into a visual indicator and into a controller adjusting the rate of inflow and/or withdrawal to maintain the bath level substantially constant.

REFERENCES:
patent: 2246907 (1941-06-01), Webster
patent: 2825104 (1958-03-01), Jones
patent: 3838727 (1974-10-01), Levi et al.
patent: 3842894 (1974-10-01), Southworth et al.

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