The PE Pyris1 is a power-compensated DSC, in which the sample and reference are each confined to a separate, self-contained calorimeter, in the form of a Pt/Ir furnace cup covered by a vented Pt lid. Measurements can be made in neutral or oxidizing surrounding atmospheres up to 725°C, using heating rates of 0.1 - 500°C/min. Typically, for temperatures up to 600°C, small sample amounts are used, 1-10 mg, and the samples are placed in crimped Al capsules. The temperature range can be extended to 725°C by using Au capsules. Sub-ambient temperature recordings, down to -170°C, can be made by cooling with liquid N2 from a dewar. This capability, however, is not available at the moment.
A small micro-balance for weighing samples is associated with the DSC. The cost for standard crimped Al sample pans is small. In addition to the standard crimped Al/Cu/Au pans, a variety of other sample pans are available from PE: (i) larger non-crimped Al/C/Au pans with pierced covers, (ii) volatile Al/Au sample pans for volatile solid and liquids, withstanding an internal pressure of 2 atm, (iii) large volume O-ring-sealed stainless steel pans, withstanding 24 atm and (iv) high-pressure capsules withstanding 150 atm. The control/data evaluation software is Pyris1.
Last update: Feb 24, 2012
By: Schneider, Andreas