Current research projects

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Image Hybrid- Fluid for CO2-Sublimation Cycle
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Image Development of a Cryogenic Magnetic Air Separation Unit
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Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image Innovative Parahydrogen Generator Based on Magnets
Image IO-Scan - Integral measuring optical scanning method
Image Intelligent innovative power supply for superconducting coils
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Low Temperature Tribology
Image Electrical components in refrigeration circuits
Image All-in-one device for freeze-drying and production of biomaterial
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K

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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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Further Projects - Research and Development

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Optimizing HVAC operation with machine learning

Intelligent control of HVAC systems – high comfort with low energy demand

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Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)

Linking the entire life cycle of a multi-functional air handling unit

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Innovative small helium liquefier

Liquefaction rates from 10 to 15 l/h

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Filter Tests

INDUSTRIAL AND LABORATORY PRECIPITATORS

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Low Temperature Tribology

Tribological studies at cryogenic temperatures