TY - JOUR AB - measuring apparatus, all things being equal, always give retarded results. The best method of ensuring stability of the furnace behavior appears to be constant feeding of the batch fuel and air for combustion. Therefore there is a current tendency to regulate fuel and air input in such a way that it is maintained at a constant level, for a given glass yield and a given batch charge. There is observed also a tendency to regulate separately the fuel and air for combustion. With this, a large volume of glass in the furnace ensures a constant temperature curve along the tank's length. Together with fuel control in tank furnaces, the use of two new pieces of apparatus is strongly recom- mended for facilitating furnace regulation; the periscope and immersion pyrometer. The periscopes serve for observation during melting and enables periodic checks to be taken of the movement and melting of batch lumps,the state of the refractories, etc. They have water-cooling attachments and can be used for continuous observations for a period of 20 minutes, at a viewing angle of 35". With two openings 75 x 75 mm in size in the side wails of the furnace (one on each side) TI - New methods of measuring glass temperatures in tank furnaces JF - Glass and Ceramics DO - 10.1007/BF00667296 DA - 2004-11-04 UR - https://www.deepdyve.com/lp/springer-journals/new-methods-of-measuring-glass-temperatures-in-tank-furnaces-C690WhTkMN SP - 215 EP - 215 VL - 17 IS - 4 DP - DeepDyve ER -