In RTD resistance sensors the electrical resistance changes with a change in temperature. They are suitable for the measurement of temperatures between -200 °C and approx. 600 °C and stand out due to high measurement accuracy and long-term stability. The resistance sensor element most frequently used is a Pt100.
It is about a temperature-sensitive measuring resistance made of platinum with a resistance value of 100 ? at 0 ?C. The temperature coefficient is fixed with ?? 0.003851?C -1
In general, RTDs are more linear than are thermocouples. They increase in a positive direction, with resistance going up as temperature rises lace wigs uk. On the other hand, the thermistor has an entirely different type of construction. It is an extremely nonlinear semiconductive device that will decrease in resistance as temperature rises.
Resistive devices change in resistance as temperature shifts.