RTD Sensor: Basics, Materials & Types
Wed, Mar 30, 2022
The full name of RTD is Resistance Temperature Detector. RTD is a special kind of resistor whose resistance value increases as the temperature increases and decreases as the temperature decreases. RTD is used as sensor in industry to measure temperature, so RTD is also called "thermal resistance". RTDs are more linear than thermocouples and are the most accurate and stable temperature sensors available. But because the change of resistance takes time, its response speed is slow. At the same time, its price is relatively expensive, and it is suitable for occasions where there are certain requirements for accuracy and the cost control is not strict.
