User Guide

6
Calibration procedure
• Bring the calibration kit to a temperature of
approximately 20 ºC.
• Remove the plug from the chamber contain-
ing the LiCl solution and insert the probe.
• Remove the adhesive sticker which covers
the calibration trimmer access holes.
• Wait for the reading to stabilize (this will take
a few hours) and then turn the "Low humidity
trimmer" (the one nearest to the probe con-
nection cable) until the value of 11.1% RH will
be displayed on the LCD.
• Remove the probe and tightly seal the cham-
ber containing the LiCl solution.
• Remove the plug from the second chamber
and insert the probe.
• Wait for the reading to stabilize and then note
the displayed value.
• By using the Calibration Table (pages 8-9),
find the displayed readout value on column
"A" and the corresponding RH value of col-
umn "B", to which the meter has to be brought
by acting on the "High humidity trimmer".
• Adjust the "High humidity trimmer" (the one
opposed to the connection cable) until the
required value is displayed on the LCD.
• Finally adjust the "Low humidity trimmer" until
the value of 75.4% RH will be displayed on the
LCD.