The working principle of Platinum thermocouple of SAIC

The working principle of Platinum thermocouple of SAIC is that when two conductors with different components are connected to a loop, when the temperature of two junction points is different, thermal current will be generated in the loop. 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 and dynamic heat of the platinum rhodium thermocouple will increase with the temperature of the measuring end. Its size is only related to the temperature of the thermocouple material and both ends, and is independent of the length and diameter of the thermoelectric electrode. The shapes of various platinum rhodium thermocouples are often different due to the actual needs of the site, but their basic structures are roughly the same, usually consisting of hot electrodes, insulating sleeve protection tubes, junction boxes and other main components.