Method and device for measuring the temperature of a molten...

Details Method and device for measuring the temperature of a molten... Method and device for measuring the temperature of a molten...

G - Physics

01

J

G01J 5/00 (2006.01) G01K 11/32 (2006.01) G01N 21/00 (2006.01)

Patent

CA 2585548

The invention relates to a method for measuring a temperature of a molten metal bath by means of an optical fibre surrounded by a cover. The optical fibre is immersed in the molten bath and the radiation absorbed by the optical fibre in the molten bath is fed to a detector, wherein the optical fibre is heated when immersed in the molten bath. The heating curve of the optical fibre has at least one point P(t0, T0), wherein the increase .DELTA.T1 in the temperature T of the optical fibre over the time .DELTA.t in a first time interval t0-.DELTA.t up to the temperature T0 is smaller than the increase .DELTA.T2 in the temperature of the optical fibre over the time .DELTA.t in an immediately following second time interval t0+.DELTA.t.

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