A new method for i n s i t u dynamic calibration of temperature sensors

A new method for in situ dynamic calibration of temperature sensors has been developed. The method is nonintrusive and can be used on a variety of sensors mounted in a variety of configurations. Chopped laser heating is used to generate a step change in sensor temperature so that dynamic calibration may be accomplished. Results on the dynamic response of a thermistor in air flow are presented as an application. A procedure for estimating time constants using data from existing heat transfer correlations has also been described.