Resistive Temperature Detectors: An Alternative to Thermocouples for Precise, Repeatable Temperature Measureme

Resistive Temperature Detectors: An Alternative to Thermocouples for Precise, Repeatable Temperature Measurements

Temperature is one of the most frequently measured quantities in science and industry, with several sensor technologies available. The Resistive Temperature Detector (RTD) offers several advantages over the well-known thermocouple for all but very high temperature applications. They are among the most stable, accurate temperature sensors available, covering approximately –200°C to +800°C, and are used where high accuracy and repeatability are required. This Keithley white paper offers a comprehensive overview of their construction, principle of operation, and application. ■