During the temperature sensor calibration process, the instrument is compared against a known reference source to ensure that it is measuring accurately. Calibration involves exposing the temperature sensor to different temperature levels and comparing the results with the reference values. The calibration process may include adjustments, repair, and cleaning of the instrument as necessary.

Calibration certificates are provided to document the calibration process and results, which provides traceability and confidence in the accuracy of the temperature measurements. Calibration of temperature sensors is typically required at least once a year, but the frequency of calibration may depend on the application and industry.