... use and worksThermocouples used to measure the temperature of the molten steel and high temperature molten metal, is a one time consumptiontype ... 300-400mm is appropriate, when measured not measured on the furnace wall or the scum, so that: fast, stable, accurate, ... five seconds, or easy to burn the temperature gun.4, the temperature gun from the furnace, remove the used thermocouple, and install new ...