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Calibration of Low Temperature Sensors
According to the comparative measurement method
Accurate and reliable measurements are the requirements for high-quality research and development or industrial production. Using the comparative measurement method the following sensors can be calibrated:
- Resistance Temperature Detectors (RTD) with positive temperature coefficient (like Platinum or Rhodium-Iron RTDs)
- RTD with negative temperature coefficient (like Germanium or Cernox™ RTDs)
- Diode and thermocouples.
With an automatic measuring station several temperatures according to a sample point table will be adjusted. The calibration is carried out with secondary thermometers that are calibrated by an authority. Furthermore a fix point check with LHe or LN2 will be performed. In addition, a calbriated Cernox sensor is available for measurements in the low temperature range. The measuring facility allows the calibration of about 30 sensors at once.
Parameter
| Indicator | Minimal | Maximal |
|---|---|---|
| Measuring range | 1.5 K | 350 K |
| Measuring accuracy | 5 mK (1.5 ... 4.2 K) | 50 mK (80 ... 350 K) |
| Sample dimension | common sensor packages | |
| Sample preparation | not necessary |
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Institut für Luft- und Kältetechnik - Gemeinnützige Gesellschaft mbH
Bertolt-Brecht-Allee 20, 01309 Dresden
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