| 摘要 |
A light receiving section of an optical pyrometer enables accurate temperature measurement of molten metal with minimum cost. The light receiving section of the optical pyrometer comprises a cylindrical member 1 made of a paper sleeve 2 with a quartz cap 4 sealed to the front end of the paper sleeve 2 using refractory material 3. An open end of the quartz cap 4 is oriented outwardly with respect to the cylindrical member 1 while the closed end 41 of the quartz cap 4 provides a light transmission window for transmitting radiant rays from the molten metal 24 to the optical pyrometer 21. |
