Current research projects

Image Low noise and non metallic liquid-helium cryostat
Image Heat2Power
Image Brine (water)-water heat pump
Image Low temperature – test facilities
Image Filter Tests
Image Corrosion inhibitor for ammonia absorption systems
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Helium extraction from natural gas
Image Low Temperature Measuring Service
Image Calibration leak for the water bath leak test
Image Software for test rigs
Image Laseroptical measurement
Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image Micro fluidic expansion valve
Image Low Temperature Tribology
Image State of system and failure analyses

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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 - Measurements and Tests

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Mass Spectrometer

Determining the composition of gas mixtures in the high or ultra-high vacuum range

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Tensile and compression testing

Determination of yield strength, tensile strength and elongation at break

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Investigation of material-dependent parameters

Investigation of the permeation behavior

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Breakthrough Sensor for Adsorption Filters (BelA)

Sensor system for detecting an imminent breakthrough in gas filtration