Differential Thermal Analysis DTA
DIFFERENTIAL THERMAL ANALYSIS – DTA PT1600
The DTA uses a dynamic measuring principle. This instrument will measure endothermal and exothermal heat flow between the sample and reference (enthalpy).
In general, these heat flows are characteristic of chemical or physical changes of the sample. The test sample and an inert reference material are heated simultaneously in the same atmosphere. Both the sample and reference material temperatures are measured with thermocouples. Then these 2 thermocouple output voltages are subtracted from one another. There suit is a low voltage signal which is proportional to the endothermal and exothermal reaction.
Endothermic sample reactions absorb heat and exhibit a lower sample temperature when compared to the reference material. Exothermic reactions produce heat and exhibit a higher sample temperature when compared to the reference material.