What does RTD stand for in temperature measurement devices?

RTD stands for Resistive Temperature Device, which is a type of temperature sensor used to measure temperature by correlating the resistance of the RTD element with temperature. This device operates on the principle that the electrical resistance of certain materials changes with temperature. Typically, RTDs are made from pure metals, such as platinum, which exhibit a predictable resistance change when subjected to variations in temperature.

Due to their accuracy and stability, RTDs are commonly used in various industrial and laboratory applications where precise temperature measurement is critical. The name itself highlights the function of the device—it is resistive in nature and specifically designed to measure temperature. The precision and reliability of RTDs make them a standard choice in many temperature measurement applications, unlike other choices listed, which do not accurately represent this technology or its function.