Description
Linseis offers a wide range of measuring devices for gravimetric sorption analysis.
Our integrated solutions offer the possibility of independent control of pressure, temperature and gas dosing by means of supplied software.
The heart of the Linseis GSA L87 series is our unique magnetic suspension balance, which is characterized by a reaction chamber for very aggressive gases, as the weighing chamber is decoupled in this variant.
A large selection of reactors is available in a temperature range from
-170 ยฐC to 1800 ยฐC and a pressure range from ultra-high vacuum to 300 bar.
The system can optionally be equipped with a gas and/or steam control.
A special water vapor generator for infinitely variable humidity control between 0-100 % is also available.
If desired, the system can also be equipped with gas analyzers for EGA (Evolved Gas Analysis).
With the Linseis GSA L87, sorption processes, diffusion processes, surface tensions and sample densities can be easily measured.
It is also suitable for investigating chemical reactions and production processes such as corrosion, decomposition and combustion, which can be perfectly simulated in the system.
Unique features
Wide range of applications: Sorption processes, diffusion processes, chemical reactions such as corrosion, decomposition and combustion.Magnetic levitation balance: Enables measurements in very aggressive gases through decoupled weighing chamber.Versatile gas and vapor dosing: Optional Water vapor generators and gas analysis systems.Wide temperature range: measurements from -170ยฐC to 1800ยฐC.High pressure capacity: Pressure range from Ultra-high vacuum up to 300 bar.Specifications
| MODEL | GSA L87* |
|---|---|
| Temperature range: | -170ยฐC up to 1250/1400/1600/1800ยฐC |
| Pressure range: | max. 150 bar (different versions), 300 bar on request |
| TGA: | |
| Max. Sample volume: | 2/15g (more on request) |
| Resolution: | 0.1 ฮผg |
| DSC: | |
| DSC Resolution: | 0.3/0.4/1 ฮผW |
| DSC Sensors: | E, K, S, C |
| Options: | Gas mixing system (MFC’s) |
| Atmospheres: | inert, oxidizing, red, vac |
| *Specifications depend on the configurations | |
Software
Making values visible and comparable
The powerful LINSEIS thermal analysis software, which is based on Microsoftยฎ Windowsยฎ, performs the most important function in the preparation, execution and evaluation of thermoanalytical experiments, in addition to the hardware used.
With this software package, Linseis offers a comprehensive solution for programming all device-specific settings and control functions, as well as for data storage and evaluation.
The package was developed by our in-house software specialists and application experts and has been tried and tested over many years.
TG properties
- Percentage (%) and absolute (mg/ug) change in mass
- Evaluation of the mass loss
- Residual mass determination
- 1st and
2nd derivative (peak temperature of the mass change)
General functions
- Real-time color display
- Automatic and manual scaling
- Display of the axes freely selectable (e.g. temperature
e.g. temperature (x-axis) against delta L (y-axis)) - Mathematical calculations (e.g. first and second derivatives)
- Saving complete evaluations
- Multitasking function
- Multi-user function
- Zoom function for curve sections
- Any number of curves can be loaded on top of each other for comparison
- Online Help Menu
- Free labeling
- EXCELยฎ and ASCII export of measurement data
- Data smoothing
- Zero curves are offset
- Cursor function
- Statistical curve evaluation (mean value curve with confidence interval)
- Tabular printout of the data and expansion coefficients
- Calculation of Alpha Phys, Alpha Tech, relative expansion L/L0
- Curve arithmetic, addition, subtraction, multiplication
Applications
Application example: Hydrogen adsorption of titanium at 700ยฐC
The following figure shows the adsorption isotherm of hydrogen in titanium.
A titanium sample was heated to 700 ยฐC in inert atmosphere. After reaching the target temperature the atmosphere was removed and replaced by hydrogen at different pressure levels. Depending on the used pressure range, the mass increase shows a saturation of hydrogen sorption at around 0,5 bar.
