Platinum rhodium thermocouple is also called high temperature precious metal thermocouple. Platinum rhodium can be divided into single platinum rhodium (Platinum Rhodium 10 platinum rhodium) and double platinum rhodium (platinum rhodium 30 platinum rhodium 6). As temperature measuring sensors, they are usually used together with temperature transmitters, regulators and display instruments to form a process control system to directly measure or control the fluid, steam and gas within the range of 0-1700 ℃ in various production processes Body medium and solid surface.