Exothermic process calibration

Manufacturers use two methods of measurements. In the first method called heat flux DSC, the instrument measures this temperature difference (DTA). Through calibration, this temperature difference is transformed into a heat flow, dq/dt. Therefore, there is a thermal factor that may vary with temperature. In the second method, called power compensation DSC, two individual heaters are used in order to monitor the individual heating rates of the two individual ovens. A system controls the temperature difference between sample and reference. If any temperature difference is detected, the individual heatings are corrected in such a way that the temperature is kept the same in both pans. That is, when an endothermic or exothermic process occurs, the instrument delivers the compensation energy in order to maintain equal temperature in both pans. 

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