Current research projects

Image Software modules
Image Test rigs for refrigeration and heat pump technology
Image Innovative Parahydrogen Generator Based on Magnets
Image Production of novel barrier layers on polymer materials to reduce hydrogen permeation
Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr
Image CO₂ GAS HYDRATES FOR SUSTAINABLE ENERGY AND COOLING SOLUTIONS
Image Low temperature – test facilities
Image 3D - Air flow sensor
Image Filter Tests
Image Behavior of multiphase cryogenic fluids
Image Development of a Cryogenic Magnetic Air Separation Unit
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Solar Cooling
Image Software for technical building equipment
Image Optimizing HVAC operation with machine learning
Image Investigation of coolants

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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

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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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Software modules

Software for properties of refrigerants

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Verification of storage suitability of cryo tubes

Artificial aging of primary packaging for biobanking applications

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Preformance measurements of heat exchangers

Is the heat exchanger properly sized?

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Innovative small helium liquefier

Liquefaction rates from 10 to 15 l/h