DynTHERM

Thermogravimetric (TG) measurements are a well established method in materials science, physics and chemistry. The continuous weight measurement of a sample while exposing it to a temperature program under controlled atmospheric conditions provides important information about chemical reactions and structural changes of the sample material.
As all other Rubotherm gravimetric instruments also our thermogravimetric analysers are equipped with the unique magnetic suspension balance. As a result of that, Rubotherm’s DynTHERM line of TGA instruments can measure under conditions where all other instruments fail: TG measurements using corrosive or toxic atmospheres, in vapour and/or under high pressure conditions. The DynTHERM line of instruments is divided in low and high pressure analysers.


DynTHERM LP:

The DynTHERM LP analysers are applied for TG measurements between vacuum and atmospheric pressure. Measurements with corrosive gases and vapour atmospheres can be carried out without the need of balance purge gas. The analysers may be equipped with our sophisticated gas & vapour dosing and mixing devices (FlexiDOSE), a pressure controller and gas sampling devices for MS & GC.

The DynTHERM LP instruments are available with the following specifications:

DynTHERM LP	maximum sample temperature	measuring cell material
	1100°C	Al2O3
	1550°C	Al2O3

DynTHERM LP	Flow Diagram of DynTHERM LP instrument equipped with FlexiDOSE GV gas & vapour   dosing system

Main applications of the DynTHERM LP instruments are:
high temperature corrosion studies (e. g. metal dusting)
coal and biomass gasification
catalyst testing (e. g. sulphidation)
CVD coating



DynTHERM MP and HP:

Our DynTHERM MP and HP instruments are the ideal tool for TG measurements at high pressures. As usual for Rubotherm instruments corrosive atmospheres and vapour do not cause any problems. This is ensured by our unique cold wall reactor design. The reaction atmosphere is only in contact with corrosion resistant ceramic materials in the high temperature zone of the reactor. The DynTHERM analysers may be equipped with gas & vapour mixing and dosing device and pressure controller for maintaining the high pressure in the instrument. Gas sampling for external analysis in GC or MS can be provided too.
The following DynTHERM MP and HP instruments are available:

DynTHERM MP/HP	pressure range	maximum sample temperature
	150 bar	750°C
	40 bar	1100°C
	30 bar	1200°C
	20 bar	1300°C

DynTHERM equipped with gas & vapour dosing and gas analysis by GC and MS

Flow Diagram of DynTHERM instrument equipped with FlexiDOSE GV gas & vapour dosing, pressure controlling and gas sampling device

In the DynTHERM instruments sample loading is as easy as in standard TGA instruments thanks to our unique motor assisted movement of the balance in a convenient loading position.

Main applications of the DynTHERM MP and HP instruments are:
coal and biomass gasification
pyrolysis studies
corrosion studies of metals (e. g. metal dusting)
getter materials testing (e. g. O2 or H2 getters)




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DynTherm