Method and device for detecting variables in the outlet of a metallurgical vessel

Method for detecting variables in a spout of a metallurgical vessel, with which at least one coil surrounding the outlet opening or channel (12) and a supply or evaluation unit (33) connected with this by leads (34) is measured and evaluated, wherein an alternating current with a predetermined frequency is produced by the supply unit in the respective coil and the impedance or the induced current flow are determined by this evaluation unit from variations in the parameters, characterized in that the at least one coil (6′, 11′, 13′), which is housed in a refractory member forming the pouring channel, as in the perforated brick (11), in the one or multiple inner casings (13), in an annular insert (30), in a closure plate (6), a slide closure (10) or such, or the induction coil (15) surrounding the outlet opening or channel (12) of an induction heater (14) is used, by means of which the at least one, preferably the different variables in the spout (5) are detected or measured, such as the proportion of slag during pouring of the metal melt, the degree of wear of the refractory parts in the pouring channel, solidified metal melt or plugging material in the pouring channel, and that after the evaluation a closure member for the spout (5) is actuated and heating of the metal in the pouring channel or renewal of the pouring channel can take place.