Answer / k.naga mallika

Temperature measuring Device.It works on the principle of
positive temperature coefficient.The temperature at which
RTD is maintained is directly proportinal to it's
resistance.Pt,Ni,Tungsten etc are the materials that obey
this property

Answer / chandra prakash

REsistance Temperature Detector . Resistance of the this
material changes based on the temperature variation .
Plattinum , Copper and Nickel have this characteristics
very well . Based on this characteristics nature , we are
measuring the temperature in terms of resistance
variation .

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