Abstract: Experiment had proved feasible that two different metal ceramic rods used as thermal couple electrodes were immersed directly into hot metal to measure temperature continuously. Thermal couple electrodes made up of two different metal ceramic rods had merits of high resistance corrosion by hot metal and slag, higher export emf, ideal linear relationship between measuring temperature and thermal emf at the range of melting temperature.

Key words: thermal couple, continuous temperature measurement, hot metal, metal ceramic