Abstract: A method for optically determining the temperature of a molten metal with a measuring device, including calibrating a replacement measuring chain by a measuring chain as a system-internal measuring standard. The measuring device includes an optical waveguide, to guide electromagnetic radiation emitted from the metal or from 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 measurement recorder, and at least one replacement measuring chain, in which a replacement optical waveguide is the measurement recorder. A reeling device includes a conveying device for successive reeling of the optical waveguide from a stock and of the replacement optical waveguide from a replacement stock, a receiving device for a stock and at least one replacement stock.

Abstract: A method for optically determining the temperature of a molten metal with a measuring device, including calibrating a replacement measuring chain by a measuring chain as a system-internal measuring standard. The measuring device includes an optical waveguide, to guide electromagnetic radiation emitted from the metal or from 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 measurement recorder, and at least one replacement measuring chain, in which a replacement optical waveguide is the measurement recorder. A reeling device includes a conveying device for successive reeling of the optical waveguide from a stock and of the replacement optical waveguide from a replacement stock, a receiving device for a stock and at least one replacement stock.

Abstract: The invention relates to a converter with a container for receiving molten metal and with a measurement device for the optical temperature determination of the molten metal. The converter has an optical waveguide for guiding electromagnetic radiation emitted by the metal to an optical detector for determining the temperature of the metal from an analysis of the electromagnetic radiation. The converter further has a line arranged between the optical detector and the container through which fluid flows for guiding and transporting the optical waveguide. The optical detector is arranged, spaced apart from the container, in a region in which the surrounding temperature is less than 150 DEG C. The invention further relates to a method for the temperature determination of the molten metal in such a converter.

Abstract: The invention relates to a converter with a container for receiving molten metal and with a measurement device for the optical temperature determination of the molten metal. The converter has an optical waveguide for guiding electromagnetic radiation emitted by the metal to an optical detector for determining the temperature of the metal from an analysis of the electromagnetic radiation. The converter further has a line arranged between the optical detector and the container through which fluid flows for guiding and transporting the optical waveguide. The optical detector is arranged, spaced apart from the container, in a region in which the surrounding temperature is less than 150 DEG C. The invention further relates to a method for the temperature determination of the molten metal in such a converter.