DIL L75 HP High Pressure Dilatometer
Expansion measurements under temperature and pressure
Description
On point
The Linseis high pressure dilatometer DIL L75 HP enables completely new applications in thermal analysis. The system can measure expansions (length changes) in the temperature range from RT up to 1100/1400/1800°C and in the pressure range up to 100/150 bar.
The high pressure dilatometer is the world’s only available instrument for thermal expansion under high-pressure. A steam generator and camplex gas control system are optional available.
And get even more informations and extend your measeurement, an analysis of the effluent gases can be done by using a QMS or FTIR system at any time. But the coupling is more than only the sum of the separate parts. You can benefit from LINSEIS coupling knowledge and integrated hard- and software concept. For the interpretation of the results, different libraries are available.
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Specifications
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Model | DIL L75 HP/1** |
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Temperature range: | RT up to 1100°C |
Price range: | $$$ |
Max. pressure: | max. 150 bar |
Vacuum: | 10E-4 mbar |
Sample holder: | fused silicia < 1100°C, Al2O3 < 1750°C |
Max. sample length: | 50 mm |
Sample diameter: | 7/12/20 mm |
Adjustable sample pressure: | up to 1000 mN |
Measuring range: | 500 / 5000 µm |
Resolution: | 0,125 nm |
Options: | Pressure controllable Gas Mixing System (MFC´s) |
Atmosphere: | inert, oxid.*, red., vac. |
* not possible with graphite heater
**Specs depend on configurations
Model | DIL L75 HP/2** |
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Temperature range: | RT bis 1400/1800°C |
Price range: | $$$ |
Max. pressure: | max. 100 bar |
Vacuum: | 10E-4 mbar |
Sample holder: | fused silicia < 1100°C, Al2O3 < 1750°C |
Max. sample length: | 50 mm |
Sample diameter: | 7/12/20 mm |
Adjustable sample pressure: | up to 1000 mN |
Measuring range: | 500 / 5000 µm |
Resolution: | 0,125 nm |
Options: | Pressure controllable Gas Mixing System (MFC´s) |
Atmosphere: | inert, oxid.*, red., vac. |
* not possible with graphite heater
**Specs depend on configurations
Accessories for pressure dilatometer
- Different types (designs/materials) of sample holders
- Instruments for sample preparation
- Vernier calipers for online input of the sample length
- Software Option for rate controlled sintering (RCS)
- Various rotary and turbo-molecular pumps
- Selection of manual, semi-automatic and automatic (MFC), Gas Boxes for up to 4 gases
- LN2 Cooling
- Possibility to operate under H2
Software
All LINSEIS thermo analytical instruments are PC controlled. The individual software modules exclusively run under Microsoft® Windows® operating systems. The complete software consists of 3 modules: temperature control, data acquisition and data evaluation. The 32 bit software incorporates all essential features for measurement preparation, execution, and evaluation of a Dilatometer measurement. Thanks to our specialists and application experts, LINSEIS was able to develop comprehensive easy to understand user friendly application software.
DIL-Features
- Glass transition and softening point evaluation
- Softening point detection with automatic software controlled system shut down
- Display of relative/absolute shrinkage or expansion curves
- Presentation and calculation of technical / physical expansion coefficient
- Rate Controlled Sintering (RCS) Software
- Sinter process evaluation
- Semiautomatic evaluation functions
- Several system correction features
- Automatic zero point adjustment
- Automatic software controlled sample pressure adjustment
Gerneral features
- Program capable of text editing
- Data security in case of power failure
- Thermocouple break protection
- Repetition measurements with minimum parameter input
- Evaluation of current measurement
- Curve comparison up to 32 curves
- Storage and export of evaluations
- Export and import of data ASCII
- Data export to MS Excel
- Multi-methods analysis (DSC TG, TMA, DIL, etc.)
- Zoom function
- 1 and 2 derivation
- Programmable gas control
- Statistical evaluation package
- Free scaling
Applications
Application example: Rock – Crystal (Calculated DTA)
The thermal expansion of rock crystal can be easily evaluated with the L75 Dilatometer. The additional DTA feature enables an in depth view of the thermal behavior of the material. The DTA measurement is a mathematical routine based on the sample temperature.
Exo- and endothermic effects influence the change of the sample temperature during the dynamic heating or cooling cycle. At app. 575°C the phase transition from takes place. The deviation of the measured temperature from the literature value (574°C) can be used for a temperature calibration.
Application example
The linear thermal expansion (delta L) and the CTE of the sample under argon atmosphere are evaluated. The heating rate was 5K/min. After 736.3°C (peak temperature of CTE) shrinkage was detected, this is due to a change in the atomic structure, known as the curie-point. The difference of measured and literature result can be attributed to contamination of the sample.