Hot Disk TPS 2500S

Product Description

The Hot Disk TPS 2500S precisely determines the thermal properties thermal conductivity, thermal diffusivity and heat capacity of the measured sample.

The device covers an extremely wide measuring range from 0.005 W/mK to 1800 W/mK. Materials with a wide range of properties from different application areas can be characterised with this system. The effort required for sample preparation is minimised. Thanks to the high sensitivity and fast electronics, even very small samples can be measured with the TPS 2500S

The device works according to the so-called “Transient Plane Source” method and fulfils the ISO 22007-2 standard.

The hot disc technique is also known as the “Transient Plane Source” (TPS) technique. The method works dynamically in a transient manner and is therefore very fast. The flat sensor serves as a heat source and temperature sensor at the same time. For standard measurements, it is placed between two samples of identical material. The samples only need to have a flat surface, but can also have rough or porous surfaces. The effort required for sample preparation is therefore minimal.

In a standard measurement, the TPS 2500S determines the thermal conductivity, the thermal diffusivity and the heat capacity (per unit volume) of the measured sample. Typical samples are solids, powders, bulk materials, foams and liquids.

The optional measuring modules available for the TPS 2500S extend the range of applications. With the anisotropy module, the user can determine the thermal and thermal diffusivity in radial and axial direction. Thin films and foils or even coatings can be characterised with the thin film module. The cp module enables highly accurate cp measurements on relatively large samples (compared to conventional cp measurement methods) – this is particularly interesting for composite materials or materials that are not perfectly homogeneous. Materials with incredibly high thermal conductivities are now being used in the electronics sector, and the TPS 2500S can measure lambda values of up to 1800 W/mK using the slab module.

The technology is now also used in the field of non-destructive quality control. The software takes over the tasks of controlling peripheral devices and supports statistical data analysis. The TPS 2500S Dual was developed for this area of application.

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Specifications

Thermal conductivity measurement range:

0.005 to 1800 W/mK



Thermal conductivity measurement range:

0.1 to 1200 mm²/s



Heat capacity measurement range:

up to 5 MJ/m³K



Temperature range:

Room temperature or -253°C to 1000°C with suitable temperature control



Reproducibility:

typically better than 1%



Measurement accuracy:

better than 5%



Measurement time:

1 to 1280 seconds


Minimum sample geometry:

0.5 mm (thickness) x
2 mm (diameter or square) for bulk materials

0.1 mm (thickness) x 10 mm (diameter or square) for slab technique

10 mm (thickness) x 5 mm (diameter or square) for one-dimensional technique



Maximum sample geometry:


unlimited


Compatible sensors:

all available Kapton sensors

all available mica sensors

Options and Accessories

• Temperature
control equipment• Special sample holders for liquids•
High-temperature sample
holders• Temperature measurement at the sample using
PT-100• As TPS 2500S Dual for parallel measurements in QC

Software/measurement
modules•
Anisotropy module• Slab module•
Thin film module•
cp module•
Structural probe module•
Low-density / highly insulating module•
Automation module

Applications