The button-type thermocouple is a temperature measuring element commonly used in temperature measurement instruments that we produce ourselves. It directly measures temperature and converts it into a thermoelectric potential signal, which is then converted by electrical instruments (secondary instruments) into the temperature of the measured medium. It is widely used in various industries such as oil, petrochemicals, steel, papermaking, power generation, and nuclear energy as high-temperature measurement instruments, converting thermal signals into thermoelectric potential signals for easy control and measurement of production temperatures, providing assurance for precision in production.