Basic Introduction To Precious Metal Thermocouples

Precious metal thermocouples are a type of thermocouple. Precious metal thermocouples are suitable for high-temperature situations in various production processes and are widely used for temperature measurement in glass, ceramics, and industrial salt bath furnaces. Precious metal, commonly used to refer to three expensive metals: gold, silver, and platinum, with beautiful appearance, stable chemical properties, and strong value retention ability. The status of gold is particularly important among them. Before the collapse of the Bretton Woods system, the currencies of Western countries were pegged to the US dollar, while the US dollar was pegged to gold. Many countries disclosed the gold content of their own currencies, and the status of gold was very important. After the 1970s, with the restructuring of the global financial landscape and the easing of inflation, the status of precious metals such as gold declined, but it was still considered a universal medium of exchange and a tool for preserving value worldwide. Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. When two conductors with different compositions are connected at both ends to form a circuit, thermal current will be generated in the circuit when the temperature of the two junction thermocouples is different. If there is a temperature difference between the working end and the reference end of the thermocouple, the display instrument will indicate the temperature value corresponding to the thermoelectric potential generated by the thermocouple. The thermoelectric heat of a thermocouple will increase with the temperature of the measuring end, and its size is only related to the thermocouple material and the temperature at both ends, regardless of the length and diameter of the thermoelectric electrode. The appearance of various thermocouples is often very different due to needs, but their basic structure is generally the same. They are usually composed of main parts such as thermal electrodes, insulated protective tubes, and junction boxes, and are usually used in conjunction with display instruments, recording instruments, and electronic regulators.