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Title:
INSTRUMENT FOR MEASURING MOLD LEVEL
Document Type and Number:
Japanese Patent JP3221990
Kind Code:
B2
Abstract:

PURPOSE: To enable the measurement from the low position to the high position of molten steel surface level and to enable the measurement with high accuracy near the aimed value of the molten steel surface level in an instrument for measuring the molten steel surface level in a mold for continuous casting.
CONSTITUTION: A thermocoupler type level meter 6 and an electromagnetic type level meter 7 for measuring the molten steel surface level in the mold 1 are arranged. Further, the measured value from the thermocouple type level meter and the measured value from the electromagnetic type level meter are inputted, and a changeover means 11 is operated so that when the molten steel surface level in the mold is low, the measured value from the thermocouple type level meter is outputted, and when molten steel surface level in the mold is high, the measured value from the electromagnetic type level meter is outputted. For the control of holding the molten steel surface level to an aimed level, the measured value from the electromagnetic type level meter is used to attain high accuracy of control. By using the thermocouple type level meter together with the electromagnetic type level meter, the measuring range is widened.


Inventors:
Akira Himeno
Akifumi Aoyama
Saito Isao
Ken Seki
Application Number:
JP24134193A
Publication Date:
October 22, 2001
Filing Date:
September 28, 1993
Export Citation:
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Assignee:
Nippon Steel Corporation
International Classes:
B22D11/16; (IPC1-7): B22D11/16
Domestic Patent References:
JP2142657A
JP1299749A
Attorney, Agent or Firm:
Shoichi Ui (4 others)