ABSTRACT
Differential scanning calorimetry (DSC) has evolved from the technique of differential thermal analysis (DTA). There was no fundamental change in the measuring principle, only the position of the thermocouple sensors and controlling the transport of heat to the sample — keeping it at a nearly constant value — was improved by careful arrangement of the parts of the apparatus. The temperatures of the sample and of the reference material are kept at an identical value, while the temperature of the reference material is increased according to a program. The recorder records the increase in electric power necessary to attain this identity of temperatures, as a function of time. An apparatus working along measuring principle is manufactured by the firm Perkin-Elmer.
