Working principle of platinum-rhodium thermocouple
2020-04-30
Working principle of platinum-rhodium thermocouple:
Platinum-rhodium thermocouple is composed of two conductors with different components. When the temperature of the two junction points is different, thermal current will be generated in the circuit.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.
Selection of platinum-rhodium thermocouple:
It is recommended to use a single platinum-rhodium thermocouple (platinum-rhodium 10-platinum) when the temperature is normal at 1000~1300℃, and a double platinum-rhodium thermocouple (platinum-rhodium 30-platinum-rhodium 6) when the temperature is normal at 1200~1600℃, so that the service life of the platinum-rhodium thermocouple can be guaranteed within the temperature range.