| 摘要 |
Device to detect the level of liquid metal (M) in a casting apparatus (1 1) which comprises at least a crystallizer (12), wherein said crystallizer (12) has lateral walls, or is of a tubular shape, and comprises an upper edge (12a) which, with respect to one of its inner corners (12b), defines an open top through which the liquid metal (M) to be cast is discharged. The device comprises a box-like structure (19) associated in correspondence with the upper end of the crystallizer (12) and extending along the upper edge (12a). The box-like structure (19) has a peripheral cavity (25) inside which at least a mean (23; 123, 124) is disposed, protruding partly toward the inside of said crystallizer (12), for the generation and detection of a variable magnetic field, wherein said generation and detection mean (23; 123, 124) extends for at least a segment thereof beyond said inner corner (12b) of the crystallizer (12) so as to face directly into the open top of the crystallizer (12). |
