version 1.2_en
page 9
Checking of calibration
The calibration of your humimeter GF2 can be
checked using the optionally available proof
plate (article no. 10003). For this procedure,
the device has to show a temperature
between 18.0 and 24.0°C.
Switch on the instrument and select the
calibration curve „digit“ using the arrow keys.
Hold the humimeter GF2 in one hand and
press it onto the grey proof plate with a
compacting pressure of 4kg.
The shown measuring value should range between
17.5
and
18.5
. If the
shown value is out of this range, you have to carry out a calibration (see
instructions below).
Calibration
If the deviation at the calibration check has been too
high, you can correct that by effecting a zero point
adjustment.
For that please proceed as follows:
Press the very left key twice to reach the menu
level. Navigate to the menu item „Options“ using the
arrow keys. Confirm by pressing the button.
Select the menu item „Calibrate“ using the arrow
keys and confirm by pressing .
This menu item has to be unlocked. For that you
have to enter the 4-digit serial number of your
humimeter. You can find the serial number on the
top right edge of the display a short time after
switching on the instrument, or on the sticker in the
battery slot.
Press the third button as long as the black bar
shows the first digit of the serial number. After a
waiting time of a few seconds the device accepts
the entered digit. Now the other 3 digits have to be
entered. When the 4-digit number has been entered
correctly (see picture), press the
button to
confirm.
Hold the humimeter GF2 in one hand up in the air
and make sure that nothing stands behind the black
measuring plate. Now press the second button ( )
with one finger.
