procedure and device for measuring the temperature of a melt in a test vessels, together with the use of optical pyrometri

摘要

PCT No. PCT/SE97/00304 Sec. 371 Date Aug. 26, 1998 Sec. 102(e) Date Aug. 26, 1998 PCT Filed Feb. 24, 1997 PCT Pub. No. WO97/31248 PCT Pub. Date Aug. 28, 1997A method for measuring the melt temperature in a melt vessel, where the vessel wall, at least partially, is made of a material transparent for infrared light; said material, at the interior of the vessel, is coated with a material having a high and stable emission factor (e0.5; de/dT0.001); the temperature of the inside of the vessel wall is used as a measure of the melt temperature close to the wall; and said temperature at the inside of the vessel wall is measured by use of optical pyrometry applied from the outside of the melt vessel.