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Catalogue DIL 402 CD - product brochure

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DIL 402 CD -Double/Differential Dilatometer

furnace

Dilatometry

inductive transducers

Thermoanalytical methods are widely used in all fields of materials characterization. Especially in the areas of ceramics and glasses, metals and composites, thermal methods such as thermomechanical analysis and/or pushrod dilatometry yield crucial

information for dimensional changes.

Such information is important for the production of the materials and parts

as well as for their later application.

Pushrod dilatometry is a method for

determination of dimensional changes versus temperature and time when the sample undergoes a controlled temperature program. The method is standardized (DIN EN 103, DIN EN 821, DIN EN 51045, ASTM E 831 or ISO 17562). The specific

materials properties gathered from

this are as follows:

Thermal expansion

Coefficient of thermal expansion

Expansivity

Volumetric expansion

Density change Sintering temperatures and

shrinkage steps

Glass transition temperatures

Softening points Phase transitions Influence of additives

put. In the differential arrangement the system offers calibration corrected measurements in one run or improved long term drift stability. With two industrial furnaces the temperature range between -180 and 1600°C is

covered.

The key advantages of the new DIL 402 CD compared to the standard dilatometers are:

• Higher sample throughput

• Calibration corrected results in one run

• Accurately corrected Rate-Controlled-Sintering (RCS) tests

• Improved long term stability

•

control display

•

base unit

sample thermocouple

The newly developed DIL 402 CD

offers highest performance for thermal expansion measurements. In

double sample arrangement, the

systems offers high sample through-

The horizontal arrangement of the

DIL 402 CD offers specific advantages regarding temperature profile

over the sample, sample handling, or safety purposes. No convective heat

transfer between the measuring system (transducer area) and the

sample area will occur at low or high

temperatures, generally causing

increased drift and noise. Various

sample geometries such as thin rods or plates can be measured in the

horizontal arrangement without any

problem. In case of sample decomposition or melting the transducer system is protected against contamination by design.

The system allows measurement of samples between 0 and 25 mm long. The forced air or liquid-nitrogen cooled furnaces offer fast heating and

cooling times and at the same time a homogeneous temperature profile

over the sample. Motorized movement of the pushrods and automatic zeroing of both sample positions are

standard features of the new system. ment.

Technical Specifications (subject to change)

■ Temperature range:

-180°C ... 500°C, RT ...1600°C (standard)

(2 exchangeable furnace types)

Heating and cooling rates: Sample holder:

Measuring ranges: Sample length: Sample diameter:

el resolution:

Atmospheres:

0,01 K/min ... 50 K/min (dependent on furnace) fused silica <1100°C Al₂O₃ <1600°C 500/5000 Mm max. 25 mm max. 6 mm 0.125 nm / 1.25 nm

inert, oxidizing, reducing

static and dynamic, vacuum

Gas flow meter and valve for purge gas (optional)

c-DTA® for the calculated DTA-signal from dilatometer measurements

for one sample, ideal for temperature calibration (optional)

Highly vacuum-tight up to 10^-4 mbar (10^-2 Pa)

Coupling to QMS 403 C Aeolos® over a heatable adapter at the exit of the furnace

DIL 402 CD