DIL L75 PT Vertical

Research Dilatometer – Vertical instrument for expansion measurement


On point

The vertical Dilatometer series DIL L75 V was developed to meet the demands of the academic community and research laboratories worldwide. With this system thermal expansion behavior of solids, liquids, powders and pastes for a variety of applications can be precisely determined. The unique vertical design of this system is perfect for low or ultra low expansion materials, since the vertical “Zero-Friction” design guarantees superior measuring results. This line of instruments is capable of performing measurements under vacuum, oxidizing and reducing atmospheres.

This system can be ordered in a single or differential version for even higher precision or sample throughput. Optionally the mechanical and electronic components of the dilatometer can be separated to allow measurements in a glove box.

The following physical properties can be measured:

CTE, Linear Thermal Expansion, Alpha Physical, Sintering Temperature, Phase Transformations, Softening Points, Decomposition Temperatures, Glass Transition Temperatures.

Cryo Option for Temperatures down to 10 K:

LINSEIS L75 Cryo „Ultra Low Temperature“ series is available in vertical (Zero – Friction) mode of operation. It offers a broad temperature range (-263°C up to +220°C), many different sample holders, operation in vacuum or a controlled oxidizing or reducing atmosphere, while maintaining the highest accuracy and ease of use.


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Model DIL L75 V*
Temperature range:  -263 up to 2800°C
Price range: $$
Delta L resolution: 0,03 nm
Measuring range: +/- 2500 µm
Contact force: 10 mN up to 1 N
Optical Encoder:
Delta L resolution: 0,1 nm
Measuring range: +/- 25000 µm
Automatic sample length detection: yes
Force modulation: yes
Contact force: 10 mN up to 5N
Multiple furnace configuration: up to 3 furnaces
Motorized furnace operation: included
– (Unsichtbar, siehe EXTRA CLASS NAME unten) – – (Unsichtbar, siehe EXTRA CLASS NAME unten) –
Gas dosing: manual gas dosing or mass flow controller 1/3 or more gases
Contact force adjustment: included
Single/double dilatometer: optional
Softening point detection: included
Density determination: included
L-DTA: optional (up to 2000°C)
Rate controlled sintering (RCS): included
Thermal library: included
Electric thermostatization of measuring head: included
Low temperature options: LN2, Intra
Vacuum tight design: yes
Automatic evacuation system: optional
OGS oxygen getter system: optional

*Specs depend on configurations


Temperature Type Heating element Atmosphere Temperature sensor
-263 – 300°C L75/264 He Thermo coax inert, oxid., red., vac. Semiconductor / Pt 100
-180 – 500°C L75/264 Thermo coax inert, oxid., red., vac. Type K
-180 – 700°C L75/264/700 Thermo coax inert, oxid., red., vac. Type K
-180 up to 1000 L75/264/1000 Thermo coax inert, oxid., red., vac. Type K
RT – 1000°C L75/220 Kanthal inert, oxid., red., vac. Type K
RT – 1400°C L75/230 Kanthal inert, oxid., red., vac. Type S
RT – 1600°C L75/240 SiC inert, oxid., red., vac. Type S
RT – 1650°C L75/240 PT Platinum inert, oxid., red., vac. Type S
RT – 1750°C L75/240 M MoSi2 inert, oxid., red., vac. Type B
RT – 2000°C L75/260 Graphite N2/Vac. Type C and/or pyrometer
RT – 2400°C L75/270 Graphite N2/Vac. Pyrometer
RT – 2800°C L75/280 Graphite N2/Vac. Pyrometer

Sample holder for DIL

  • Sample preparation devices
  • Different types of vacuum and turbomolecular pumps
  • Different types (designs/materials) of sample holders
  • Vernier calipers for online input of the sample length
  • Turntable for multiple furnace configuration
  • Selection of Gas Boxes for up to 4 gases
  • Possibility to operate under H2


Measuring systems Dilatometers


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 Thermogravimetric measurement. Thanks to our specialists and application experts, LINSEIS was able to develop comprehensive easy to understand user friendly application software.


  • Glass transition and softening point evaluation
  • Softening point detection with automatic software controlled system shut down
  • Display of relative/absolute shrinkage or expansion curves
  • Presentation and calculation of technical / physical expansion coefficient
  • Rate Controlled Sintering (RCS) Software
  • Sinter process evaluation
  • Semiautomatic evaluation functions
  • Several system correction features
  • Automatic zero point adjustment
  • Automatic software controlled sample pressure adjustment

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


Applications example: Glass Ceramic

The dilatometric method is an excellent method to determine the thermal expansion (CTE) and the softening point of glass ceramic materials. Besides the absolute expansion and the expansion coefficient (CTE) you can find the first derivative of the absolute expansion. Where the first derivative goes through zero you can determine the max. of the thermal expansion and thus the softening point of the material.

Dilatometer Messung Glaskeramik

Applications example: Ceramics / Powder metallurgy

In production processes of high-tech ceramics a simulation of sinter processes is of high interest. When using the optional software package RCS (rate controlled sintering) it is possible to program controlled sintering with a dilatometer as per PALMOUR III theory. The following application is a sintering process of ZrO2. Here the final density of 100% is achieved. The initial heating rate decreases as the final density is reached.

Dilatometer Messung Keramik Pulvermetallurgie

External application




Linseis Dilatometer Produktbroschüre L76 L75

DIL L76 and L75
Product B
rochure (PDF)


Linseis Dilatometer Software

DIL Special Software
Brochure (PDF)