DIL L75 / Laser

Laser dilatometer for maximum precision

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

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