What is the full form of RTD?

Resistance Temperature Detector (RTD):

• In Resistance Temperature Detector (RTD) devices; Copper, Nickel, Tungsten, and Platinum have widely used metals because they are pure metals.
• The resistive transducers or resistive sensors are also called variable resistance transducers.
• It has a positive value of temperature coefficient.
• They can be used for measuring various physical quantities, such as temperature, pressure, displacement, force, vibrations, etc.
• The variable resistance transducer elements work on the principle that the resistance of the conductor is directly proportional to the length of the conductor and inversely proportional to the area of the conductor