Description
To the point
The LINSEIS Laser Dilatometer (DIL L75 / Laser) of the Pico series enables expansion measurements with unprecedented accuracy and resolution. A resolution in the picometer range is available here (0.3 nanometers = 300 picometers). In the best case, resolutions can be achieved that are 33 times better than those of a conventional push rod dilatometer.
During development, particular emphasis was placed on the simple handling of the device. This made it possible to ensure operation that corresponds to that of a conventional push rod dilatometer.
The sample preparation for the L75 / LASER does not require any special preparation, it corresponds to that of a conventional dilatometer. The device does not require any special sample geometries. Reflective and non-reflective samples can be measured.
Unique Features
High precision:
laser interferometer for
sub-nanometer resolution
Wide temperature range:
operation from -180°C to 500°C
Extended cooling options:
Air, liquid nitrogen or closed
cooling circuit.
Non-contact measurement:
No disturbance of the sample,
increases precision and reliability.
User-friendly software:
Comprehensive data
analysis and reporting.
Service-Hotline
+1 (609) 223 2070
+49 (0) 9287/880 0
Our service is available Monday to
Thursday from 8-16 o’clock
and Friday from 8-12 o’clock.
We are here for you!
Specifications
MODEL | DIL L75 LASER |
|---|---|
| Temperature range: | -180 bis 500°C; RT … 1000°C |
| Resolution: | 0.3 nm |
| Heating/cooling rates: | 0.01 K/min … 50 K/min |
| Sample holders: | fused silica |
| Sample length: | up to 20 mm |
| Sample diameter: | up to ∅ 7 mm |
| Atmosphere: | inert, oxic., red., vac. |
| Interface: | USB |
| *Specs depend on configurations |
Accessories
- Devices for sample preparation
- Caliper for manual or online input of sample length
- Various gas boxes: manual, semi-automatic and MFC controlled
- Rate-controlled sintering (RCS) software option
- Various rotary and turbomolecular pumps
- LN2 cooling
Software
Making values visible and comparable
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.
Dilatometer functions
- Glass transition and softening point determination
- Automatic softening point switch-off, freely adjustable (system protection)
- Display of absolute or relative shrinkage or expansion
- Display and calculation of technical / physical expansion coefficients
- Rate-controlled sintering (software option)
- Sintering process evaluation
- Density determination
- Automatic evaluation routines
- System correction (temperature, zero curve, etc.)
- Automatic zero point adjustment
- Automatic punch contact pressure control
General functions
- Real-time color display
- Automatic and manual scaling
- Display of axes freely selectable (e.g. temperature (x-axis) versus delta L (y-axis)
- Mathematical calculations (e.g. first and second derivative)
- Storage of complete evaluations
- Multitasking function
- Multi-user function
- Zoom option for different 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 calculated
- Cursor function
- Statistical curve evaluation (mean value curve with confidence interval)
- Tabular printout of data and expansion coefficients
- Calculation of Alpha Phys, Alpha Tech, relative expansion L/L0
- Curve arithmetic, addition, subtraction, multiplication
Measuring system
Applications
Application example: Invar dilatometer measurement
An Invar sample was measured and evaluated four times from room temperature to 200°C in air. The reproducibility was measured by comparing a classic dilatometer with the laser dilatometer. A reproducibility of 0.01 % of the measuring range was achieved when measuring with the dilatometer and the reproducibility was 33 times higher when measuring with the laser dilatometer.
Well informed
