Current research projects

Image Panel with indirect evaporative cooling via membrane
Image Cryostats, Non-Metallic and Metallic
Image Filter Tests
Image Behavior of multiphase cryogenic fluids
Image Cool Up
Image Helium extraction from natural gas
Image Corrosion inhibitor for ammonia absorption systems
Image Thermal engines
Image Humidifier System for High-Purity Gases
Image Measurements on ceiling mounted cooling systems
Image IO-Scan - Integral measuring optical scanning method
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Low noise and non metallic liquid-helium cryostat
Image Micro fluidic expansion valve
Image Investigation according to DIN EN ISO 14903
Image Influenced melting point of water by magnetic field

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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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Measurements on ceiling mounted cooling systems

Comparative performance measurement

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Solar Cooling

Solar Cooling with Photovoltaic

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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 Temperature Measuring Service

Measurement of Thermal Properties at Low Temperatures

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Test procedures for electrical components

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