Current research projects

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Image Computational fluid dynamics CFD
Image Calibration of Low Temperature Sensors
Image Tribological investigations of oil-refrigerant-material-systems
Image Development of test methods and test rigs for stationary integrated refrigeration units
Image Practical training, diploma, master, bachelor
Image Electrical components in refrigeration circuits
Image Heat2Power
Image Thermal engines
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
Image Performance tests of refrigerant compressors
Image Thermostatic Expansion Valves
Image Verification of storage suitability of cryo tubes
Image Micro fluidic expansion valve
Image CFE-Test of Cooker Hoods

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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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