A RTD Sensing element consists of a wire coil or deposited film of pure metal. The element’s resistance increases with temperature in a known and repeatable manner. RTD’s exhibit excellent accuracy over a wide temperature range.
Temperature range: -200 to 700ºC
Sensitivity: the voltage drop across an RTD provides a much larger output than a thermocouple.
Linearity: Platinum and copper RTD’s produce a more linear response than thermocouples or thermistors. RTD non-linearities can be corrected through proper design of resistive bridge networks.