Thermocouples have a wide range of applications, mainly for measuring temperature and can be used in industries such as food, metallurgy, chemical, aerospace, etc. For example, thermocouples can be used in food processing to detect the temperature of liquids, solids, and other items. In addition, thermocouples can also be used during the welding process, such as detecting the temperature of the welding point and the welding depth.

Aviation specific thermocouples consist of two conductors with different compositions welded at both ends to form a circuit. The direct temperature measuring end is called the measuring end, and the connecting end is called the reference end. When there is a temperature difference between the measuring end and the reference end, a thermal current will be generated in the circuit. When connected to a display instrument, the instrument will indicate the corresponding temperature value of the thermoelectric potential generated by the thermocouple. The thermoelectric potential will increase with the temperature rise of the measuring end, and the magnitude of the thermoelectric potential is only related to the conductor material and the temperature difference between the two ends, and is independent of the length and diameter of the thermoelectric electrode. The structure is made up of conductors, insulating magnesium oxide, and 1Cr18Ni9Ti stainless steel protective tubes that have been drawn multiple times. The product mainly consists of junction boxes, terminal blocks, and basic structures, and is equipped with various installation and fixing devices.