| 摘要 |
A method of detecting the level of molten metal existing within a mold, the method comprises the steps of disposing a transmission coil and a receiving coil to oppose to each other with the mold interposed therebetween, applying an AC voltage to the transmission coil to produce alternating magnetic flux so that at least a part of the magnetic flux passes through the mold and the molten metal, if any, and reaches the receiving coil, and determining the level of the molten metal on the basis of at least one of a voltage value and a phase of an AC signal induced in the receiving coil by the alternating magnetic flux, and an apparatus for carrying out the above method.
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