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L75 PT Vertical

Research Dilatometer – Vertical series

Description

On point

The vertical research Dilatometer series L75V 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 Dilatometers 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 (-260°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.

Vertical vs. Horizontal configuration

Horizontal arrangement

  • easy and robust design at a modest price
  • from -263 to 2800°C. For applications requiring lower or higher temperatures vertical arrangement is better suited

Vertical arrangement

  • Zero friction design (sample is only in contact with the end knob and the pushrod)
  • Multi-furnace arrangement (up to three furnaces)
    • To cover entire temperature range from -180 to 2800°C
    • To increase throughput (hot furnace can be lifted automatically to switch to new cold furnace and start new measurement)
  • Small footprint
  • Available as single-, differential/double- and quattro arrangement (1, 2 or 4 samples at the same time)
  • Perfect for low temperature measurements (furnace on the bottom – measurement compartment on top) to ensure natural gas path, cold air (falls down) below sensor compartment
  • Perfect for high temperature measurements (furnace on top – measurement compartment below) to ensure natural gas path, hot air (streams up) above sensor compartment

 

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Specifications

Black and white
Model DIL L75 Vertical
Temperature range:  -263 up to 2800°C
LVDT:
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

Furnace & Accessories

Lisneis Dilatomter L75 Horizontal   Dilatometer Messsysteme

Furnace options:

  • L75V Cryo -260°C up to +220°C
  • L75V 500LT -180°C up to +500°C
  • L75V 700LT -180°C up to +700°C
  • L75V 1000LT -180°C up to +1000°C
  • L75V 1000 RT up to 1000°C
  • L75V 1400 RT up to 1400°C
  • L75V 1550 RT up to 1600°C
  • L75V 1750 RT up to 1750°C
  • L75V 2000 RT up to 2000°C
  • L75V 2400 RT up to 2400°C
  • L75V 2800 RT up to 2800°C

 

Acessories:

  • 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

 

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

DIL-Features

  • 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

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

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

Downloads

Overview

Linseis Dilatometer Produktbroschüre L76 L75

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brochure (3,2Mb)

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Linseis Dilatometer Software

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brochure (2,5Mb)

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