How to calibrate a temperature sensor?

Calibrating a temperature sensor involves comparing its readings to a known accurate reference and adjusting for any error. The calibration method depends on the type of sensor, which can be analog, digital, or a thermistor. To calibrate a temperature sensor, you need to gather the required tools and perform a multi-point calibration. This involves preparing calibration points at known temperatures, such as ice water, room temperature, and warm or boiling water. You then measure each point by placing the sensor and reference in the same environment, letting them stabilize, and recording both the sensor reading and actual temperature. The error or offset is calculated by subtracting the sensor reading from the reference temperature for digital sensors, or by creating a calibration curve for analog sensors or thermistors. The calculated offset or curve is then used to update the code to correct the sensor readings. The corrected code is then re-tested and validated at different temperatures to confirm accuracy. Calibration is essential to ensure accurate temperature readings from the sensor. By following these steps, you can calibrate your temperature sensor and obtain reliable readings.