L75 / 120LT (DIL Dilatometer)

8 Sample Dilatometer (DIL)

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. 

Specifications:

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.

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

Dilatometer-Features

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

Accessories:

Here is a short extract of our available accessories:

• 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