| 摘要 |
The invention relates to a sensor (1) for measuring the surface level of a liquid phase metal in a continuous casting plant including an ingot mold having an upper surface into which an opening (4), in which a liquid metal is fed, leads, characterized in that the sensor includes: an air excitation coil (7) perpendicular to the upper surface of the ingot mold and arranged near the opening, powered by a current for generating a magnetic field, the field lines of which propagate along upper field lines away from the ingot mold and along the lower field lines covering the upper surface of the ingot mold and the molten metal surface; a lower air reception coil (8) parallel to the excitation coil, in which an induced voltage is generated by the action of the lower field lines, wherein the latter can be modified by a variation in the level of the molten metal surface; and an upper air reception coil (9) parallel to the excitation coil, vertically adjacent to the lower excitation coil, and having a shape and characteristics identical to those of the latter, wherein the induced voltage is generated by the action of the upper field lines, the latter being substantially free of disturbances generated by the molten metal surface.
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