主权项 |
1. An immersion device (1) for measuring the temperature of a melt with an optical fiber, preferably a metal coated optical fiber, in a metallurgical vessel, the immersion device comprising:
a feeding channel (26); feeding means (20, 21, 22, 27, 106, 108) for feeding an optical fiber into a disposable guiding tube (31) and for feeding the disposable guiding tube (31) together with the optical fiber into the melt; and control means (102, 103, 104, 105, 107) for monitoring the position of an end of the optical fiber relative to an end of the disposable guiding tube (31). |