Technical data and functions

  • The two digital Pt100 sensors for dry temperature and wet temperature are characterized by particularly high precision and synchronism up to 90 °C. The Pt100 sensors are connected to the digital ALMEMO® D6 connector (as a complete measuring chain) adjusted at 0 °C and 85 °C in the calibration laboratory. The accuracy of the temperature measurement is thus independent of the ALMEMO® measuring instrument. The two digital Pt100 sensors are easily exchangeable in case of service.
  • Flexible, thin, stable sensor cable with shielding and insulation FEP.
  • The digital psychrometer can be operated with any ALMEMO® measuring instrument without affecting its measuring accuracy. The digital psychrometer is calibrated without ALMEMO® device.
  • A digital atmospheric pressure sensor integrated in the ALMEMO® D6 plug itself provides automatic pressure compensation for all pressure-dependent humidity variables.
  • Humidity calculation (Calculation is done in the ALMEMO® D6 connector) on the basis of formulae as per Dr. Sonntag and the enhancement factor as per W. Bögel (correction factor fw(t,p) for real mixed gas systems). This substantially widens the measuring range and improves the accuracy of humidity variable calculations.
  • Humidity variable Absolute humidity in g/m³
  • Temperatures are measured using A/D converter incorporated in the ALMEMO® D6 plug.
  • The humidity variables are calculated from the three primary measuring channels (real measurable variables): Dry temperature, wet temperature, atmospheric pressure

Basics of Humidity and Moisture Measurement