 |
 |
||||||
[March 2002]
'SUPERSONIC SYSTEM' for TG-MS Measurements
SETARAM (Caluire, France) has introduced the new SuperSonic System designed for the coupling between a high temperature thermobalance and a mass spectrometer (TG-MS measurements).Located inside the thermobalance furnace closed to the sample, it is composed of two chambers: in the first one, the pressure is reduced from atmospheric pressure to primary vacuum (10-1 mbar); in the second the pressure is further reduced to a secondary vacuum (10-5 mbar). In such a configuration, the Mach phenomenon occurs and thus enables the sample molecular flow to reach a supersonic speed within a few microseconds and to be directed straight to the MS detector.
Thanks to its design, the SuperSonic Systems is claimed to offer unmatched measurement capabilities:
• Remarkable resolution and high sensitivity, even for the heaviest molecules. Gas transfer distance and time have been reduced to a minimum; use of vertical gas sweeping, giving total gas transfer, without collisions of molecules with each other or the walls. No retention phenomenon and extremely short response time.
• No condensation phenomenon. The sample, the gas emitted and the SuperSonic System are all at the same temperature.
SETARAM says that the system is very simple to install and to use, enabling high performance TG-MS measurements on all types of materials that include inorganic samples - such as ceramics and glasses - for masses up to 1024 amu.
ENDS