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A discovery by Thomas J. Seebeck in 1821 paved the way for the modern thermocouple, and today it is the most widely used electrical sensor in thermometry.
Seebeck discovered that when two dissimilar metals are connected (“junctioned”) together, a minute electric potential will be generated. This phenomenon, known as the Seebeck Effect, is the basis of how a thermocouple functions.
Aerospace Material Specification 2750 (AMS 2750) is the main pyrometry specification that provides the requirements for the calibration and testing of thermal-processing equipment.
Aerospace special-process providers seeking Nadcap accreditation agree that the process has elevated the level of compliance from procedural accuracy, training, documentation, equipment functionality and process control.