what is the difference between 2 wire and 3 wire RTD-
application wise,cost effectivity?

Answer Posted / rk

basically as lenght of wire inc resitance inc.henace a lead compensator is given in 3 wire rtd and gives best results over a far distance from source.
but 2 wire rtd has effect of temp.hence it is used for smaller distance which is not much preffered

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