Note．

1．Tolerance is defined as the maximum allowable deviation from the temperature vs resistance reference table．

2．l t l=modulus of temperature in degrees Celsius without regard to sign．

3. Accuracy class 1/n(DIN) refers to 1/n tolerance of class B in IEC 751

Wiring method of RTDs.

Two-conductor type：

Since a conductor resistance is added to the resistance value. It is necessary to reduce the conductor resistance in advance. This type is not usually used except for a high resistance RTDs.

Three-conductor type:

Use to eliminate the effect caused by conductor resistance. Care should be taken for long. Distance transmission because a variation of resistance of conductor has an effect on accuracy. This type of connection is widely used in industrial applications.

Four-conductor type:

This type of connection is used for high-accuracy measurement and standards because it is not affected by conductor resistance. Generally, a constant current is applied and the resistance value is measured by a potential difference.

MI RTD Operating Temperature Range