RTD Working Principle Explained! Have you ever wondered how an RTD (Resistance Temperature Detector) measures temperature so accurately? RTD uses a platinum sensing element (Pt100/Pt1000). As temperature increases, the resistance of platinum increases. A constant current is passed through the RTD element. The resulting voltage change is measured by a transmitter or indicator. The instrument converts this signal into an accurate temperature reading. Simple Rule: Temperature ↑ = Resistance ↑ RTDs are widely used in industrial automation, process control, power plants, oil & gas, pharmaceuticals, and manufacturing industries due to their excellent accuracy and stability. Are you using RTD sensors in your plant? Share your experience in the comments! Post navigation Why Do Differential Pressure (DP) Flow Meters Need Square Root Extraction? Pressure Gauge Snubber vs Syphon
