Current research projects

Image Low Temperature Tribology
Image Investigation of materials
Image Investigation of coolants
Image Innovative small helium liquefier
Image Tensile and compression testing
Image Performance tests of refrigerant compressors
Image Air-water heat pumps
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr
Image Computational fluid dynamics CFD
Image CO₂ GAS HYDRATES FOR SUSTAINABLE ENERGY AND COOLING SOLUTIONS
Image Testing of mobile leak detectors according to DIN EN 14624
Image High Capacity Pulse Tube Cooler
Image Solar Cooling
Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image Development of test methods and test rigs for stationary integrated refrigeration units

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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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