The RTD or Resistance Temperature Detector is a type of sensor that measures temperature by correlating the resistance of the RTD eLEMent with temperature. At the heart of its operation lies a simple principle: a change in temperature of the sensor material leads to a change in its electrical resistance, which can then be measured and easily translated into temperature. Its main function is to deliver highly accurate and reliable temperature measurements, often in industrial and scientific contexts. This precision, coupled with the ability to perform over a wide range of temperatures, makes RTDs popular in various applications including HVAC systems, thermostatic controls, and process equipment.
RTDs can be specifically designed for various applications, catering to a range of different temperature measurement needs. For example, they can be used to monitor the temperature in harsh or hazardous conditions, in high-accuracy laboratories, or even in food and beverage industries to ensure appropriate storage temperatures. Their main characteristics include a high degree of accuracy and stability, broad temperature range, and repeatability. Manufacturers of RTD sensors include companies like Honeywell, Siemens, ABB, Omega Engineering, and many others. In summary, RTDs are versatile and reliable tools for temperature measurement across a range of industries and applications.