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HygroLog NT
 Probe Adjustment

When equipped with the LC display and keypad, the HygroLog NT can be used to adjust any HygroClip probe connected either to the logger or to the docking station. Probe adjustment functions include the following:

  • 1-point adjustment of humidity (offsets all measurements)

  • 1-point adjustment of temperature (offsets all measurements)

  • Full adjustment of humidity (from 2 to 4 points)

  • Full adjustment of temperature (2-point)

The ROTRONIC HW4 software offers the same functions with the additional benefit that a probe adjustment protocol can be generated and printed.
Example of HW4 Probe Adjustment Protocol (also available in MS Word format):
 

Calibration standards 
Certified Humidity Standards: if you do not have access to a humidity generator, the ROTRONIC humidity standards offer a reliable and convenient way to generate a reference humidity condition during probe calibration. The ROTRONIC standards are shipped with an internationally accepted certificate, meeting in full the requirements of quality systems such as ISO9000. The standards are available in boxes of 5 glass ampoules of the same value, and can be stored indefinitely. Standards in the range of 5 to 95 %RH are non-saturated aqueous salt solutions. The 0 %RH humidity standard is made of small granules of a highly porous ceramic. A Material Safety Data Sheet is available for each standard.

Calibration devices 
Calibration Devices: a calibration device is a small airtight container that fits on the probe and seals around the humidity sensor. During calibration, a known reference humidity is produced inside the calibration device by means of a humidity standard.