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HygroPalm
Probe Adjustment
The digital HygroClip probes can be calibrated and adjusted at one or more points with the HygroPalm 2 or HygroPalm 3 indicator:

• For a quick check of the probe and eventual 1-point adjustment of humidity and temperature, you can plug a freshly
  calibrated probe into any free probe input and adjust against this probe.

• For scheduled maintenance, you can adjust temperature at up to 2 points and humidity at up to 4 point against physical
  references.

Note: the HygroPalm 1 is limited to a 1-point adjustment of the probe. The HygroPalm 2 and 3 permit full calibration of the probe.

You may also make use of the full interchangeability of the HygroClip digital probes and rotate the probes with a calibration laboratory. The calibration laboratory can do any of the following:

  1. Use the HygroPalm 2 or HygroPalm 3 to directly calibrate and adjust the probe
  2. Using the PalmDock 1 docking station, connect the HygroPalm 2 or HygroPalm 3 to the COM port of a PC on which the HW4 software has been installed.
HW3 Software   HW4 Software: software based probe calibration is both simple and precise: there are no hard-to-reach, hard-to-adjust potentiometers. HW4 offers a high level of flexibility in selecting the calibration reference, giving the user complete control over the calibration process. HW4 features the following calibration modes:
  • Humidity: 2, 3 or 4 points
  • Temperature: 2 points
  • 1-point adjustment function (offset) for both humidity and temperature

When adjusting humidity against a ROTRONIC humidity standard, HW4 automatically corrects the value of the standard to reflect the temperature of calibration (see note). HW4 also offers the possibility of saving and printing a probe adjustment protocol.
 

ROTRONIC HygroGen: this humidity-temperature generator is primarily designed for the calibration of humidity instrumentation. It is completely self-contained, requiring no external resources except mains power, and is light enough to be portable for use on-site.
  • Suitable for all types of humidity-temperature probes

  • Fast equilibrium to move from one condition to another

  • Generates an extremely stable humidity and temperature environment

  • Smart chamber design minimizes temperature and humidity gradients

  • Range: 5 to 50°C and 5 to 95 %RH

  • Chamber accepts up to five probes

  • Data loggers can be inserted in the chamber

  • Available with different models of chamber door

  • Stainless steel enclosure

      ROTRONIC HygroGen
 


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 ISO 9000. 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.

Note: the value of the standards does not depend on barometric pressure (altitude).

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.