| 摘要 |
A method is provided for measuring a parameter of a molten metal bath by an optical fiber surrounded by a cover. The optical fiber is immersed in the molten bath, and the radiation absorbed by the optical fiber in the molten bath is fed to a detector, wherein the optical fiber is heated when immersed in the molten bath. The heating curve of the optical fiber has at least one point P(t0, T0), wherein the increase &Dgr;T1 in the temperature T of the optical fiber over the time &Dgr;t in a first time interval t0−&Dgr;t up to the temperature T0 is smaller than the increase &Dgr;T2 in the temperature of the optical fiber over the time &Dgr;t in an immediately following second time interval t0+&Dgr;t.
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