Current research projects

Image Innovative Manufacturing Technologies for Cryosorption Systems
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Swirl-free on the move...
Image Test rigs for refrigeration and heat pump technology
Image Behavior of multiphase cryogenic fluids
Image All-in-one device for freeze-drying and production of biomaterial
Image Software modules
Image Micro heat exchangers in refrigeration
Image Investigation of material-dependent parameters
Image Software for test rigs
Image Development of a Cryogenic Magnetic Air Separation Unit
Image Thermostatic Expansion Valves
Image Range of services laboratory analyses
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
Image Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)
Image Helium extraction from natural gas

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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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