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Low Temperature Measuring Service
Measurement of Thermal Properties at Low Temperatures
The cool down to cryogenic temperature causes thermal stress within the structure of components or complete devices. Furthermore thermal material properties could change crucial.
Samples can be proved down to 10 K via temperature cycling tests and/or measurements of the thermal conductivity, the coefficient of thermal expansion (also as integral for large sample dimensions) and the heat capacity. An experimental station with optimised conditions for measuring the thermal conductivity of different materials is under construction.
Thermal Tests (Cycling)
| Indicator | Minimal | Maximal |
|---|---|---|
| Cool down rate | 25 K/h | 200 K/min |
| Cool down cycles | 1 | Customer preference |
| Measuring accuracy | 1 % | 5 % |
| Temperature range | 80 K (5 K) | 450 K |
| Sample preparation | Customer material | |
| Sample dimension | up to | Ø 400 mm x 550 mm |
| other | dimenions on request |
Thermal Conductivity
| Indicator | Minimal | Maximal |
|---|---|---|
| Measuring range | 10-2 W/(m K) | 103 W/(m K) |
| Measuring accuracy | 1 % | 5 % |
| Temperature range | 10 K | 350 K |
| Sample preparation | Customer material | |
| Sample dimension | up to | Ø 60 mm x 20 mm |
| other | dimenions on request |
Heat Capacity
| Indicator | Minimal | Maximal |
|---|---|---|
| Measuring range | 10 J/(kg K) | 10 J/(kg K) |
| Measuring accuracy | 1 % | 5 % |
| Temperature range | 10 K | 350 K |
| Sample preparation | Customer material | |
| Sample dimension | up to | 150 x 150 x 150 mm3 |
| other | dimenions on request |
Coefficient of Thermal Expansion
| Indicator | Minimal | Maximal |
|---|---|---|
| Measuring range | 10-6 K-1 | 10-4 K-1 |
| Measuring accuracy | 0.1 % | 5 % |
| Temperature range | 10 K | 350 K |
| Sample preparation | Customer material | |
| Sample dimension | up to | 200 x 200 x 200 mm3 |
| other | dimenions on request |
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