L75 – 120 LT Dilatometer

8 Sample Dilatometer


On point

The LINSEIS dilatometer L75/120LT was developed to measure the expansion of polymer samples. Hereby up to 8 different samples can be measured simultaneously in a temperature range of –40°C up to +160°C.

To cover the temperature range a commonly available climate chamber is used that incorporates a cooling generator and a heat source. The measuring sensors are mounted on top of the heat chamber and connect through a hole into the chamber. The complete arrangement is airtight, in order to avoid the intrusion of humidity into the measuring chamber.

Optionally a humidity chamber can be selected to control both temperature and humidity in the sample chamber. It is possible to connect a gas box to the measuring chamber. The temperature measurement is done by means of 4 thermocouples which are hanging always between 2 samples.

This arrangement enables to get a good temperature profile over the measuring chamber. The change of the length of the samples over the temperature change is measured with a LVDT sensor (linear variable differential transformer). This sensor has a very high resolution of 14nm (Nanometer) 10E-9. All 8 LVDT`s are connected to the data acquisition. The normally used polymer samples can have a length of 80 up to 100mm. The cross-section of the samples can be 4 x 10mm up to 15 x 15mm.


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Black and white

Dilatometer Gas Dosing

Model L75 / 120LT
Linear measurement range: +/-1300um(+/-0,5%FS)
Resolution: 1.25 µm
Measuring principle: LVDT (differential transformer)
Automatic zero adjustment: Yes
Sample load: (adjustable) 50 up to 500 mN
Sample holder material: Fused Silica
Sample dimension: 4 x 10 x 80 up to 100mm
Temperature range: -40°C up to +160°C


Dilatometer Messsysteme

  • Sample preparation devices
  • Different types (designs/materials) of sample holders
  • Vernier calipers for online input of the sample length
  • Selection of Gas Boxes for up to 4 gases
  • Optional humidity chamber


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.


  • Display of relative/absolute shrinkage or expansion curves
  • Presentation and calculation of technical / physical expansion coefficient
  • Semiautomatic evaluation functions
  • Several system correction features


General 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



Linseis Produktbroschüre L75 120 LT

brochure (1Mb)


Linseis Dilatometer Software

brochure (2,5Mb)