Device for detecting the surface level of molten metal in a mold

Details Device for detecting the surface level of molten metal in a mold Device for detecting the surface level of molten metal in a mold

1976-11-11

1978-09-12

Swisher, S. Clement

Measuring and testing

Liquid level or depth gauge

Thermal type

G01F 2326

Patent

active

041127595

ABSTRACT:
A device for detecting the surface level of molten metal in a mold, in which a thermo-sensitive magnetic element the relative magnetic permeability of which varies depending upon temperature is provided on an outer wall surface of the mold, and a coil connected to an A. C. power supply is mounted so as to leave a gap between the thermo-sensitive magnetic element and the coil, so that variation in electromagnetic coupling between the coil and the thermo-sensitive magnetic element due to temperature increase of the mold according to the rise of molten metal level can be detected.

REFERENCES:
patent: 1945378 (1934-01-01), Robbins
patent: 2350329 (1944-06-01), Hornfeck
patent: 3089337 (1963-05-01), Cutsogeorge
patent: 3220258 (1965-11-01), Rod
patent: 3848466 (1974-11-01), Dial et al.
patent: 3891861 (1975-06-01), Weber et al.
patent: 3936734 (1976-02-01), Brandli et al.

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