【 Structural Analysis 】

【Working principle】

Based on the thermoelectric effect of metals, the temperature difference generated at both ends of thermocouples is used to measure the temperature of molten steel and high melting metals. Two different components of conductors are welded at both ends to form a circuit. The direct measurement end is called the working end (hot end), and the wiring terminal end is called the cold end. When there is a temperature difference between the hot end and the cold end, a thermal current will be generated in the circuit. When connected to a display instrument, the corresponding temperature value of the generated thermoelectric electromotive force will be indicated on the instrument, and the electromotive force will increase with the increase of temperature.