DIL 402 Expedis Select & Supreme

DIL 402 Expedis Select & Supreme

Dilatometry Redefined.

The dilatometer DIL 402 Expedis Select and Supreme offer state-of-the-art dilatometer technology and are designed for a wide range of sophisticated applications. All instruments of the DIL Expedis series feature the revolutionary NanoEye measuring cell; a new dimension in measuring range and accuracy.

It is the first horizontal dilatometer series on the market which allows for force modulation and, by this means, bridges the gap between dilatometry and thermomechanical analysis (TMA) under oscillatory load.

These two versions are specially designed for both research & development and sophisticated industrial applications: The comprehensive, fully-equipped Supreme model and the upgradable Select type.



Every Nanometer Counts.

A New Dimension in Measuring Range and Accuracy

In classical dilatometry, the two parameters measurement range and resolution mostly seem diametrically opposed. If the resolution goes up, the measuring range usually goes down and vice versa. NanoEye, the novel opto-electrical displacement system,  features perfect linearity and maximum resolution over a measuring range which was impossible to realize until now.

Funtional Principle


During a test run, if the sample expands, all green components in the graphics move backwards with the help of a linear guide (marked in blue). The optical encoder determines the corresponding length change directly on the appropriate scale.



Key Features

Key Features

Key Technical Data

Key Technical Data

(subject to change)

  • Heating Rates
    0.001 ... 100 K/min
  • Sample Holder Systems
    Single and Dual/Differential System
  • Measuring System
  • Temperature Accuracy
    1 K
  • Temperature Precision
    0.1 K
  • Repeatability of m. CTE
    10-8 1/K
  • Measuring Range
    ± 10000 μm ... ± 25000 μm
  • Resolution
    0.1 nm ... 1 nm
    (over the entire measuring range)
  • Gas Control
    1-way, optional 3-way switch and MFC (Mass Flow Controller)

High Temperature Version

High Temperature Version

Up to 2800°C

Refined Safety System

An elaborate safety system monitors the cooling water and purge gas flow throughout the measurement.

Variable Gas Atmosphere Is Key

In the DIL 402 Expedis Supreme HT instrument, the sample chamber and furnace chamber are always separated by means of a protective tube (glassy carbon or alumina). This allows for the use of a different atmosphere around the sample than around the heating elements.In combination with an alumina protective tube (maximum furnace temperature: 1680°C), even an air atmosphere can be applied to the sample.

The optional AutoVac system for evacuating and refilling the sample chamber along with integrated purging of the pyrometer window effectively supports the direct switch between oxidizing and inert conditions.

Broadest Application Range

Two graphite furnaces with end temperatures of 2400°C and 2800°C provide the appropriate configuration for measuring the thermal expansion of metals, alloys, ceramics and composites in applications such as aerospace, power generation, the oil and gas industry or demanding research.

However, via an adapter, each of these graphite furnaces can be replaced with a standard furnace such as SiC, SiO2, Cu or steel. The opposite is also feasible: A DIL 402 Expedis Supreme HT measuring part with a standard furnace can be subsequently retrofitted with a high-temperature furnace.

Pyrometer for Detection of the Highest Temperatures

Since W-Rh thermocouples can react with graphite above 2000°C, the sample temperature of the DIL 402 Expedis Supreme HT is measured optically with a high-performance pyrometer from room temperature onward.



Proteus® Software

The unique Proteus® 7 dilatometer software offers everything a user could ever want and need: It runs smoothly, provides reliable results, and it is fast and efficient. It provides a large range of functions, but – at the same time – offers a clearly-arranged user interface. Additionally, it is intuitive and thus easy to learn. But ... that’s not all. There are some more options inside which impress even the most experienced operators – particularly the Density Determination, the patented c-DTA® and the new, innovative Identify software features.

Density Determination

This program add-on allows determination of the density change of samples with varying consistency, i.e., solids, viscous materials such as pastes, liquids or melts as well as the volumetric expansion of isotropic materials.


The c-DTA® signal gives the opportunity for simultaneous analysis of length changes and endothermal/exothermal effects. It can also be used for temperature calibration.


The unparalleled Identify, for the identification and interpretation of DIL measurements includes several NETZSCH libraries with hundreds of entries from the ceramic, inorganic, metal, alloy, and polymer or organic fields. Additionally, user-specific libraries can be created. They can be shared with other users within a computer network.

Identify allows the identification of unknown samples from the absolute values, the slope or the shape of a measured curve. This will also open up the opportunity to compare known samples against a variety of other samples, enabling one to make a statement about material quality. Finally, all measurements can be stored in the extensive database and are always available for identification or quality comparison.

All information with one single click

of unknown measurement curves

Quality Control
via agreement between the current measurement and selected database entries

Archiving functionality
for present measurements and existing database entries




NETZSCH DIL Basic Webinar September 15 EN


NETZSCH DIL402 Expedis Dilatometer
DIL402 Productvideo EN

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DIL 402 Expedis Classic

The new dilatometer DIL 402 Expedis Classic offers state-of-the-art dilatometer technology and is designed for sophisticated applications. Like all instruments of the DIL Expedis series, the Classic version features the revolutionary NanoEye measuring cell; a new dimension in measuring range and accuracy.