The new 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.
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.
The double furnace sliding carrier creates the opportunity to cover the entire temperature range from -180°C to 2000°C or, alternatively, to increase the sample throughput by having the combination between the double furnace design and a dual sample holder used in dual mode. This increases the number of possible measurements tremendously and boosts the instrument’s efficiency.
One or two furnaces, manual or motorized furnace operation, single or dual sample holders, tube type or rod type sample holders ... these are only some of the features the Expedis Select or Supreme provide to match nearly all application scenarios.
Measuring the sample length with a caliper runs the risk of result scatter, especially for soft samples. The DIL 402 Expedis is capable of detecting the initial length of a sample automatically prior to the start of a test run under condi-tions identical to those during the measurement itself.
A stable position of the sample inside the sample holder is a deciding factor for successful measurement results. The MultiTouch feature places the sample into the optimum position using a unique, tail-like motion.
In order to conveniently measure various sample lengths, the thermocouple is adjustable. A guiding rod accommodates the thermocouple for moving it into the desired position without bending.
When using the three mass flow controllers (MFC, optional), the gas flow paths inside the instrument are split: the protective gas first passes through the measuring cell and then enters the sample chamber, whereas the purge gas(es) are directly fed into the sample chamber. All protective and purge gases leave the instrument together via the furnace exhaust.
The vacuum-tight design of the DIL 402 Expedis is ideally suited for connection to a QMS or to an FT-IR via capillary coupling to the SiC furnace. Outgassing of impurities, additives, organic binders and/or decomposition products can thus be studied.
- Heating Rates
0.001 ... 100 K/min
- Sample Holder Systems
Single and Dual/Differential System
- Measuring System
- Temperature Accuracy
- Temperature Precision
- Repeatability of m. CTE
- Measuring Range
± 10000 μm ... ± 25000 μm
0.1 nm ... 1 nm
(over the entire measuring range)
- Gas Control
1-way, optional 3-way switch and MFC (Mass Flow Controller)
An elaborate safety system monitors the cooling water and purge gas flow throughout the measurement.
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.
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.
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.
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.
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.