- A 2-wire PT100 RTD suffers approximately 2.5°C of positive error for every 1 Ohm of copper cable lead resistance.
- 3-wire and 4-wire RTD circuits mathematically cancel out lead wire resistance variations.
- Thermocouples require specialized alloy-matched extension wires; standard copper creates secondary unintended thermocouple junctions.
Flow Ctrl Tech Engineering: Turnkey industrial automation, PLC programming, SCADA development, HMI, fieldbuses, and IIoT architectures. Contact our engineering center at [email protected] or phone +91 91110 91005.