
Differences Between 2, 3, and 4-Wire RTDs
Resistance Temperature Devices (RTDs) are widely used in industrial and commercial applications due to their accuracy and stability. However, RTD wire configuration can significantly impact measurement precision. Selecting the right configuration ensures optimal performance, minimizes errors, and enhances system reliability.
RTDs are typically manufactured in three different wiring configurations: 2-wire, 3-wire, and 4-wire. Each configuration is designed to compensate for lead wire resistance to varying degrees, impacting measurement accuracy. The 2-wire setup is the simplest but most susceptible to errors...