Current research projects

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Image 3D - Air flow sensor
Image Reducing the filling quantity
Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image Micro heat exchangers in refrigeration
Image Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)
Image Lifetime prediction of hermetic compressor systems
Image Ionocaloric cooling
Image Cryostats, Non-Metallic and Metallic
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image Combined building and system simulation
Image Production of novel barrier layers on polymer materials to reduce hydrogen permeation
Image Performance tests of condensing units
Image Tribological investigations of oil-refrigerant-material-systems
Image Filter Tests
Image Low noise and non metallic liquid-helium cryostat

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Calibration of Low Temperature Sensors

Industry and R&D

Dr. rer. nat. Matthias Schneider

+49-351-4081-5126

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. There are continuous extensions for different sensor types.

Parameter

IndicatorMinimalMaximal
Measuring range1.5 K350 K
Measuring accuracy5 mK (1.5 ... 4.2 K)50 mK (80 ... 350 K)
Sample dimensioncommon sensor packages
Sample preparationnot necessary

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