HOT DISK Software Modules

Software Modules

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Software Modules for Thermal Conductivity Measurements

Isotropic Standard module

Available for all TPS instruments

The powerful Isotropic Measurement Module allows the Hot Disk user to measure the thermal conductivity, thermal diffusivity and specific heat capacity of any isotropic bulk sample, whether a solid, liquid, powder, paste or foam. The thermal conductivity measured using this module is the geometrical mean value of the thermal conductivity in the probed sample volume. Working with the Isotropic module is straightforward, and requires only a minimum of input parameters. Even a sample of unknown material properties can quickly be tested and analysed.

The Isotropic Measurement Module features both single- and double-sided sample testing.

 

THERMAL CONDUCTIVITY RANGE:

InstrumentsRange
TPS 2500 S, TPS 2200 0.03 to 500 W/m/K
TPS 1500 0.03 to 50 W/m/K
TPS 500 S, TPS 500 0.03 to 100 W/m/K

One-Dimensional Module

Available for TPS 2500 S, TPS 1500 and TPS 500 S

When testing high-conducting materials the one-dimensional method is very useful if sample amounts are limited. This module tests the thermal conductivity and diffusivity along the axis of rod-shaped samples. Here sensor diameter should match the sample diameter, which allows for very small samples, down to as little as 1.5 mm diameter and 4 mm length.

The One-Dimensional Measurement Module features both single- and double-sided sample testing.

THERMAL CONDUCTIVITY RANGE:

InstrumentsRange
TPS 2500 S 1 to 1800 W/m/K
TPS 1500 1 to 400 W/m/K
TPS 500 1 to 200 W/m/K

Anisotropic Module

Available for TPS 2500 S, TPS 2200 and TPS 1500

The Anisotropic Measurement Module furnishes the unique ability to measure thermal conductivity both in and through the plane of the sample analysed. Being able to test the anisotropic behavior of thermal conductivity is crucial for many applications. In any context where heating or cooling is involved, e.g. batteries, electronics and building materials, being able to ascertain this property is vital. This type of measurement is made possible by using the specific heat capacity of the sample in question as in-data. Specific heat capacity, if not found tabulated in scientific journals etc., or known from previous testing of similar materials, can readily and accurately be tested with a dedicated TPS measurement module.

The Anisotropic Measurement Module features both single- and double-sided sample testing, but double-sided testing is recommended for maximum precision.

 

THERMAL CONDUCTIVITY RANGE:

InstrumentsRange
TPS 2500 S 0.005 to 1500 W/m/K
TPS 2200 0.005 to 500 W/m/K
TPS 1500 0.005 to 50 W/m/K

Slab Module

Available for TPS 2500 S, TPS 2200 and TPS 500 S

Using the Slab Measurement Module, wafers, sheets or slabs of high-conductivity materials can be tested. Among the samples suitable for testing with this method we find e.g. metals, semi-conductors and graphite. With prior knowledge of the sample thickness, this method requires only measurement time and output power as in-data, making it very easy and straightforward to work with.

The Slab Measurement Module requires two sample halves for accurate measurements.

 

THERMAL CONDUCTIVITY RANGE:

InstrumentsRange
TPS 2500 S 1* to 1500 W/m/K
TPS 2200 1* to 500 W/m/K
TPS 500 S 1* to 200 W/m/K

 

* To achieve maximum accuracy a minimum of 5 W/m/K is required, however, reproducibility will still be good down to 1 W/m/K.

Thin Film Module

Available for TPS 2500 S and TPS 2200

The Thin Film Measurement Module is employed for testing the thermal conductivity through thin insulating films or coatings on conducting substrates of bulk or slab type. By measuring the thermal resistance over the film, the thermal conductivity is acquired with input of film thickness. The thickness of the film tested can be from 20 to 500 μm.

The Thin Film Measurement Module requires two sample halves for testing.

 

THERMAL CONDUCTIVITY RANGE:

InstrumentsRange
TPS 2500 S, TPS 2200 0.01 to 5 W/m/K

Specific Heat Capacity Module

Available for TPS 2500 S, TPS 2200, TPS 1500 and in a limited version for TPS 500 S

This dedicated module excels in determining the specific heat capacity of solid or liquid samples. Like all other Hot Disk testing, the procedure is gentle and non-destructive. The sample to be tested is placed in an insulated gold container and carefully heated a few degrees with a well-defined heating effect, allowing very accurate calculation of specific heat.

The Specific Heat Capacity Measurement Module is designed for single sample testing.

 

SPECIFIC HEAT CAPACITY RANGE:

InstrumentsRange
TPS 2500 S, TPS 2200, TPS 1500, TPS 500 S up to 5 MJ/m³K

Structural Probe Module

Available for TPS 2500 S

The unique Structural Probe Measurement Module makes it possible to measure the thermal conductivity as a function of probing depth into a sample. The method can be used for homogeneity testing, defect detection or analysis of inhomogeneous substances. For accurate measurements, the average specific heat capacity of the specimen to be tested is required.

The Structural Probe Measurement Module features both single- and double-sided sample testing.

 

THERMAL CONDUCTIVITY RANGE:

InstrumentsRange
TPS 2500 S 0.03 to 500 W/m/K

Low-Density / Highly-Insulating Module

Available for TPS 2500 S, TPS 2200 and TPS 1500

To improve accuracy when analysing very low-conducting materials such as aerogels, this module is an essential addition. These materials displays such a low thermal conductivity that heat loss through the sensor medium – in this case cables – becomes significant. Utilizing this module the heat loss can be accurately corrected for, making it possible to measure extremely low thermal conductivities.

The Low-Density / Highly-Insulating Measurement Module requires two sample halves for testing.

 

THERMAL CONDUCTIVITY RANGE:

InstrumentsRange
TPS 2500 S, TPS 2200, TPS 1500 0.01 to 0.5 W/m/K

Automatization Module

Available for TPS 2500 S, TPS 2200 and TPS 1500

This module allows a TPS instrument to be remotely operated via the TPC/IP protocol. It is a powerful tool when using an instrument for an on-line or near-line application, such as quality control, or when the operator does not have direct access to the instrument.

Single-sided Testing

Available for all TPS instruments

While the most accurate thermal conductivity measurements are carried out with the sensor sandwiched between two sample halves, all TPS instrument can perform single-sided testing if e.g. the sample amount is small. This type of testing shows the same excellent reproducibility as a standard test and makes it possible to perform quick QC measurements or rapid comparative studies. The admitted drawback of single-sided testing is a slightly lower accuracy in the results, which ensues from the necessarily asymmetric heat flow around the sensor. As a result of this, and the use of an insulating sample support, the best results are acquired for high-conducting samples while low-conducting samples (e.g. many polymers) only yield thermal effusivity. Single-sided testing requires no additional equipment, only the use of any insulating material to support the sensor. This is supplied with all Hot Disk instruments, and can be complimented by an insulating material of your preference.

 

THERMAL CONDUCTIVITY RANGE:

InstrumentsRange
TPS 2500 S, TPS 2200 0.1 to 500 W/m/K
TPS 1500 0.1 to 400 W/m/K
TPS 500 S 0.1 to 200 W/m/K
TPS 500 0.1 to 100 W/m/K

 

* To achieve maximum accuracy a minimum of 1 W/m/K is required; however, reproducibility and thermal effusivity values will still be good down to 0.1 W/m/K.

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