HIGH PRESSURE DSC

Applications to Material Characterization and Reaction Simulation

Setaram Applications BrochureCaluire, France — Today there are currently two different types of Differential Scanning Calorimeter* (DSC) detector, the traditional ???Plate??? type design (Such as the Setaram DSC131) and the ‘Calvet’ type detector used by systems such as the Setaram SENSYS.

Plate DSC requires the pressurization of the complete detector and with such a design, the full volume of the experimental chamber and furnace is under pressure. Most of the time the pressure inside the detector is limited to 150 bar.

One of the major drawbacks of the Plate HP-DSC is that the performance of the detector, and therefore the calibration is impacted by both the pressure and gas mixture used within the chamber.

Thus the HP-DSC is only designed for work with a static pressure, and must be calibrated differently for different conditions.

The Calvet HP-DSC works by only pressurizing the sample crucible and as such the detector performance is not impacted by the experimental conditions. Subsequently ,a Calvet HP-DSC allows operation with any type of gas and pressures.

To date the maximum pressure that can be reached is 1000 bar. It is also possible to work with both a static pressure or a dynamic pressure (gas circulation).

See more in the Application update brochure High Pressure DSC: Applications to material characterization and reaction simulation that may be free;y downloaded from the Setaram website Applications Library at: www.setaram.com/application-articles.htm

For fifty years Setaram Instrumentation (Caluire, France) has been the global supplier of solutions in thermal analysis and calorimetry, a domain of increasing importance for scientists in academic, pharmaceutical, biotechnology, food, oil and gas, nuclear, process safety and advanced materials. Setaram Instrumentation systems generate unique data from nano to macro thermal events. For research, development, manufacture and wear testing, these data give insight into material functionality and play a key role in the critical decision-making required for the efficient development and production of new materials

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*Read more about DSC on?? the Wikipedia article,?? http://en.wikipedia.org/wiki/Differential_scanning_calorimetry, that begins:

Differential scanning calorimetry or DSC is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature. Both the sample and reference are maintained at nearly the same temperature throughout the experiment. Generally, the temperature program for a DSC analysis is designed such that the sample holder temperature increases linearly as a function of time. The reference sample should have a well-defined heat capacity over the range of temperatures to be scanned.

Also, you may read about different methods of differential thermal analysis and other temperature-related measurement methods on the Evitherm website at: www.evitherm.org/default.asp?lan=1&ID=981&menu1=871&menu2=981