In temperature measurement, thermocouples are widely used due to their many advantages, such as simple structure, ease of manufacturing, broad measurement range, high accuracy, low inertia, and easy-to-transmit output signals. Additionally, as thermocouples are passive sensors, they do not require an external power source for measurement, making them very convenient to use. Therefore, they are often employed to measure the temperature of gases or liquids inside furnaces and pipes, as well as the surface temperature of solids.