METHOD AND APPARATUS FOR MEASURING THE TEMPERATURE OF A MOLTEN METAL

摘要

A method, device and apparatus are provided for measuring the temperature of a melt, particularly of a molten metal, with an optical fiber, fed into the melt through a disposable guiding tube. The optical fiber and an immersion end of the tube are immersed into the melt and have feeding speeds which are independent from each other. An elastic plug is arranged within the tube or at an end of the tube opposite the immersion end. The optical fiber is fed through the elastic plug, and the elastic plug reduces a gap between the optical fiber and the tube, which has a larger inner diameter than the outer diameter of the optical fiber. The apparatus includes a fiber coil and a feeding mechanism for feeding the optical fiber and the tube, including at least two independent feeding motors, one for feeding the optical fiber and one for feeding the tube.

主权项

1. A method for measuring temperature of a melt with an optical fiber, the method comprising feeding the optical fiber into the melt through a disposable guiding tube and immersing the optical fiber and an immersion end of the disposable guiding tube into the melt, wherein a feeding speed of the optical fiber and a feeding speed of the disposable guiding tube are independent from each other.