A thermocouple made of platinum / platinumrhodium provides the accurate temperature sensing.

This sensor can be taken as substitute of platinum - rhodium thermocouple in certain application range, even its application range is wide than of platinum - rhodium thermocouple.

The choice of intermediate check standard and the determination of check periodic to first-class standard Platinum and Rhodium 10-Platinum thermocouple are introduced in this paper.