How does the PT100 sensor work?


The PT100 is a resistance temperature sensor whose operating principle is based on the change in conductor resistance with temperature. PT100 is made of pure platinum and has good stability and linearity, so it is widely used for temperature measurement. At zero degrees Celsius, the resistance value of the PT100 is 100 ohms. As the temperature increases or decreases, its resistance increases or decreases accordingly. By measuring the resistance value of PT100, the temperature of its environment can be accurately calculated.
When the PT100 sensor is in constant current flow, its voltage output is proportional to the temperature change, so the temperature can be measured indirectly by measuring the voltage. This measurement method is called "voltage output type" temperature measurement. Another common measurement method is the "resistance output type", which calculates the temperature by measuring the resistance value of PT100. Regardless of the method used, the PT100 sensor provides highly accurate temperature measurements and is widely used in a variety of temperature control and monitoring applications.
In general, the PT100 sensor utilizes the principle of conductor resistance changing with temperature to accurately measure temperature by measuring resistance or voltage, providing high-precision temperature measurement results for various temperature control and monitoring applications.

Post time: Jan-17-2024