Working principle of RTD

Question

Accepted Answer

RTD stands for Resistance Temperature Detector. It operates on the principle that the electrical resistance of a metal changes with temperature.

RTD is a temperature sensor made of a pure metal or a metal alloy with a known resistance-temperature relationship.
As the temperature changes, the resistance of the RTD element also changes.
The relationship between resistance and temperature is typically linear, making RTDs highly accurate.
RTDs are commonly used in industrial applications for temperature measurement and control.
Examples of metals used in RTDs include platinum, nickel, and copper.