Materials widely used in thermocouples

The most widely used thermal resistance materials currently in use are platinum and copper: platinum has high resistance accuracy, is suitable for neutral and oxidizing media, has good stability, and has a certain degree of nonlinearity. Copper resistors with a lower resistance change rate at higher temperatures have a linear relationship between resistance value and temperature within the temperature measurement range, and are suitable for media with larger temperature lines and no corrosion. They are prone to oxidation exceeding 150 degrees Celsius. The most commonly used resistance material in China is R0=10&Omega, R0=100Ω And R0=1000Ω There are also some others. These index numbers are Pt10 Pt100,Pt1000. The copper resistance is R0=50Ω And R0=100Ω In both cases, these index numbers are Cu50 and Cu100. Among them, Pt100 and Cu50 have the most extensive applications