Module 4: Heat transfer calculations, miscellaneous topics and carbon credit
Lecture 36: Temperatue Measurements
Materials for thermocouple:
Melting point of thermocouple materials must be higher than the measuring temperature.
The dissimilar materials on joining should be able to produce large emf for accuracy of measurements.
Temperature is determined indirectly i.e. through calibrations of emf with temperature. As for as possible, the linear variation of emf with temperature is desired.
Thermocouple materials should be resistant to atmospheres in furnaces.