Solutions for the correction of temperature measurements based on beaded thermocouples

摘要

Thermocouples are a practical and potentially accurate means for determining surface temperatures in many ap- plications. Yet, significant errors can often arise during the usage of beaded thermocouples because of the effects of junction displacement, contact resistance, and stray heat transfer tot he surrounding environment. To help offset these potentially significant sources of errors, Duhamel's integral in Laplace form was first used to relate the response of a surface thermocouple to the true substrate temperature.