what is the difference between 3,4 wire RTD sensor?
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Answer Posted / rajendraa
in 3 wire rtd lead wire resistance s reduced to a grt extent, lead wire error s such that t s the difference of wires A&B(A s the wire connected to rdt & B with the R in bridge circuit). in 4 wire rtd, the lead wire error s completely reduced,it s mainly used for calibrations & is very costly...
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