Current research projects

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Image Calibration of Low Temperature Sensors
Image Behavior of multiphase cryogenic fluids
Image Low noise and non metallic liquid-helium cryostat
Image Helium extraction from natural gas
Image Innovative small helium liquefier
Image Cool Up
Image Laseroptical measurement
Image Tensile and compression testing
Image Hybrid- Fluid for CO2-Sublimation Cycle
Image Humidifier System for High-Purity Gases
Image Multifunctional electronic modules for cryogenic applications
Image Air-flow test rig for fan characteristic measurement
Image Low Temperature Measuring Service
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image Reducing the filling quantity

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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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