Experience in debugging the Pt100 thermal resistor temperature measurement circuit Platinum resistance temperature sensor is a temperature sensor made by using its resistance and temperature to form a certain functional relationship. Due to its high measurement accuracy, large measurement range, good reproducibility and stability, it is widely used in temperature measurement in the medium temperature range (-200℃~650℃). PT100 is a widely used temperature measurement element. It has unparalleled advantages over any other temperature sensor in the range of -50~600℃, including high accuracy, good stability, strong anti-interference ability, etc. Since the resistance value of the platinum resistor is nonlinear with the temperature, nonlinear correction is required. Correction is divided into analog circuit correction and microprocessor digital correction. There are many ready-made circuits for analog correction, which are not accurate and easily affected by interference factors such as temperature drift. Digital correction needs to be used in the microprocessor system. The resistance value of the Pt resistor and the temperature are matched and stored in the EEPROM. The corresponding temperature value is calculated by table lookup according to the AD value measured in the circuit.
You Might Like
Recommended ContentMore
Open source project More
Popular Components
Searched by Users
Just Take a LookMore
Trending Downloads
Trending ArticlesMore