Measuring and testing – Liquid level or depth gauge – Thermal type
Patent
1976-12-02
1978-02-28
Queisser, Richard C.
Measuring and testing
Liquid level or depth gauge
Thermal type
336 57, 340228F, G01F 2322, H01F 2716
Patent
active
040758907
ABSTRACT:
A device for detecting the level of the molten metal surface within a continuous casting mold. A detector element consisting of a body of a thermosensitive magnetic material, the magnetic properties of which vary in response to a temperature variation, is mounted at an appropriate position on a side wall of the continuous casting mold, and an electromagnetic coil for detecting the magnetic flux in the detector element is contained within a detector box mounted in a water jacket surrounding the mold at a position opposed to the detector element. The molten metal surface level within the mold is detected by detecting a change in the magnetic properties of the detector element by means of the electromagnetic coil. The detector box is detachably mounted in the water jacket, and water supply inlet and outlet means in the detector box guide cooling water through the detector box for cooling the electromagnetic coil within the detector box. A protective casing containing the electromagnetic coil is slidably mounted in a side wall of the detector box toward the mold for movement toward and away from the mold. The casing has an extension thereon projecting toward the mold and is spring-biased towards the mold, whereby a predetermined distance is maintained between the outer side wall of the mold and the protective casing.
REFERENCES:
patent: 3220258 (1965-11-01), Rod
patent: 3456714 (1969-07-01), Weiss
patent: 3838372 (1974-09-01), Damijonaitis
patent: 3864973 (1975-02-01), Petry
patent: 3891861 (1975-06-01), Weber et al.
Fujikawa Yasuo
Iwasaki Takeshi
Sasaki Kunimasa
Appleman John S.
Mitsubishi Jukogyo Kabushiki Kaisha
Queisser Richard C.
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