Current research projects

Image Heat2Power
Image Cryostats, Non-Metallic and Metallic
Image Verification of storage suitability of cryo tubes
Image Performance tests of refrigerant compressors
Image IO-Scan - Integral measuring optical scanning method
Image Investigation of coolants
Image Innovative Parahydrogen Generator Based on Magnets
Image Measurements on ceiling mounted cooling systems
Image Swirl-free on the move...
Image Behavior of multiphase cryogenic fluids
Image High temperature heat pump
Image Lifetime prediction of hermetic compressor systems
Image Investigation of material-dependent parameters
Image Low noise and non metallic liquid-helium cryostat
Image Investigation according to DIN EN ISO 14903
Image Hybrid- Fluid for CO2-Sublimation Cycle

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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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Micro fluidic expansion valve

for increasing of the efficiency of small and compact cooling units

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Hydrogen and methane testing field at the ILK

Simultaneously pressures up to 1,000 bar, temperatures down to –253°C

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Low noise and non metallic liquid-helium cryostat

Low-noise Magnetic Field Cryostat for SQUID-Applications

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Cryostats, Non-Metallic and Metallic

position indenpendent, highest endurance, tiltable for liquid helium and liquid nitrogen