METHOD FOR OPTICALLY DETERMINING THE TEMPERATURE OF A MOLTEN METAL, AND REELING DEVICE FOR CARRYING OUT SAID METHOD

摘要

The invention relates to a method for optically determining the temperature of a molten metal by means of a measuring device, comprising: - an optical waveguide to conduct electromagnetic radiation emitted by the metal or by the tip of the optical waveguide to an optical detector, - at least one replacement optical waveguide, - an optical detector for determining the temperature of the metal from an analysis of the electromagnetic radiation, - a measuring chain in which the optical waveguide is the measuring transducer, and at least one replacement measuring chain in which a replacement optical waveguide is the measuring transducer. The replacement measuring chain is calibrated by means of the measuring chain as the system internal standard. The invention further relates to a reeling device for carrying out said method. The reeling device comprises a conveying device for successively reeling off the optical waveguide from a stock and the replacement optical waveguide from a replacement stock. The reeling device further comprises an accommodation unit for a stock and at least one replacement stock.