Thermocouples For Distributor And Fore Hearth – TI/GL/01

In distributor and fore hearths temperature measurement and control is most important. The glass fore-hearth control system includes a temperature sensing system and control system. The temperature sensing system includes an arrangement of prepositioned temperature sensors. Simplex thimble thermocouples and tri-level / triplex thermocouples consist of an assembly of a bottom, middle and top thermocouples for sensing the vertical temperature profile of the molten glass at a fixed location. The output signals from these temperature sensors are received by controllers of the control system which then provide control signals and regulate the operation of the heat input devices and the cooling input devices. Thermocouple output and controller’s calibration must be accurate, reliable and repeatable.
The Tri-Level Thermocouples designed to achieve thermal homogeneity of the glass exiting from the fore-hearth for forming, as the homogeneity will help to get the proper distribution of Gob in moulds