Description
To the point
The L74 Optical Dilatometer was developed to meet the demanding applications of the glass-ceramics, metal industry and energy industry to fulfill.
A high-resolution CCD camera enables visual real-time analysis of the sample expansion – either as a single image or as a video sequence.
The advantage of this method is that no force is applied on the sample, so no mechanical deformation takes place.
In the case of soft samples or samples that change their strength during the measurement, the result can always be affected by the contact pressure of a classic push rod dilatometer. The optical dilatometer can help to overcome or minimze this influence.
The LINSEIS software integrates several correction and analysis functions and the unique horizontal design enables the most demanding applications.
The special solid-liquid adapter is an extension and enables volume measurements of solids, liquids and solid-liquid phase transitions.
A special sample holder is also available for measuring rigid foils, which would bend too much when measured by push rod dilatometer due to the forces acting on them.
Functions:
- Non-contact strain measurement
- High-resolution CCD camera
- Optical fleximeter
Measuring principle
In an optical dilatometer, the sample is permanently compared with a reference during the measurement.
The reference is typically a known material with defined expansion and acts as a live correction to overcome optical fluctuations due to atmospheric effects during heating.
The field of view has an area of 3.3 x 2.8 mm2 and is typically focusing on the upper edge of the sample.
Optical dilatometer detection of sample and reference
Unique features
Non-contact strain measurement
High-resolution CCD camera
Fully automatic focus
Measurement of solid, liquid and
solid-liquid phase transitions
Temperature range:
-100°C to +2000°C
Operation in different atmospheres:
oxidizing, reducing, inert, vacuum
Real-time analysis as
single image or video
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Specifications
MODEL | DIL L74 OD |
|---|---|
| Optical measuring system: | Optical dilatometer equipped with a high-resolution camera and fully automated focus |
| Temperature range: | -100°C up to 500°C; RT up to 500/1000/1500/2000°C |
| Measuring system: | optical non contact |
| Accuracy: | up to 1 µm |
| Field of view: | 3.3 x 2.8 mm |
| Atmosphere: | oxidizing (optional: red., inert and vac.) |
| Vacuum: | up to 10E-5 mbar |
| Heating rate: | 0.01 to 100°C/min (depends furnace) |
| Int. Standards: | ASTM D1857, CEN/TR 15404, BS 1016:Part 15, CEN/TS 15370-1, DIN 51730, IS 12891, ISO 540, NF M03-048 |
| Interface: | USB |
| *Specifications depend on the configurations |
Software
Black on white
The powerful LINSEIS thermal analysis software, which is based on Microsoft® Windows®, 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.
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 option for various curve sections
- Any number of curves can be loaded on top of each other for comparison
- Online Help Menu
- Free labeling
- EXCEL® 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
Videos
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