Question

Difference between 2 wire method and 3 wire method in measurements

Answer 1

Answer:

2-wire RTD's are mostly used with short lead wires or where close accuracy is not required. ... Leadwire resistance error cancelation is most effective when all the lead wires have the same resistance. Using 3 wires of the same AWG, length, and composition will typically result in leadwire resistances matched within 5%......