| 摘要 |
In a method for measuring and controlling the level of molten metal in a casting mould, guide channel or the like, the size of eddy currents induced in the molten metal by means of a measuring coil is measured, which is a measure of the distance from measuring coil to molten metal. In this process, the eddy currents are induced on the surface of the molten metal, their size is compared with a nominal value and the inflow rate of molten metal controlled according to the difference. An apparatus intended for this makes provision for the measuring coil (20) to be arranged above the molten metal and to be connected to an electronic unit (28), which supplies the measuring coil (20) with the alternating current required to produce the eddy currents and measures the size of the eddy currents, and for the electronic unit (28) to be coupled to a control device (9) in order to compare the measured actual values of the size of the eddy currents with a nominal value, which control device drives a unit (11) for measuring the flow rate of molten metal through an outlet pipe (2) or the like. <IMAGE> |
