In industrial applications, 2-wire RTDs are rarely used due to issues with resistance detection. Instead, 3-wire and 4-wire RTDs are standard. A 3-wire RTD connected to a Wheatstone Bridge solves lead wire resistance problems, while a 4-wire RTD connected to a Constant Current Source transmitter provides the most accurate temperature measurement. The transmitter ensures the current remains constant despite lead wire length variations, detecting voltage changes due to temperature and transmitting