Checkline LM6 - Manual (Page 10)

– 9 –
8.0 CALIBRATION
8.1 Checking the calibration
We recommend to check the calibration of the
humimeter LM6 every 4 weeks, using the proof
plate delivered with the device. For this check
the device has to show a temperature between
18.0 and 24.0°C.
1. Switch on the instrument and select the
calibration curve “reference” using the
arrow keys.
2. Hold the humimeter LM6 in one hand and
press it onto the grey proof plate (compacting pressure of 4.0kg). The shown
measuring value should range between 14.5 and 15.5.
3. If the shown value is out of this range, you have to carry out a calibration
(see instructions below)
8.2 Calibration procedure
By a zero point adjustment you can correct a too high deviation of the calibration check.
For that please proceed as follows:
1. Press the left key twice to reach the menu level.
Navigate to the menu item Options using the arrow
keys. Confirm by pressing the button.
2. Select the menu item Calibrate using the arrow keys a
znd confirm by pressing the button.
3. This menu item has to be unlocked. For that you have to enter the 4-digit serial
number of your humimeter LM6. You can find the serial number on the top right
edge of your display a short time after switching on the instrument, or on the sticker
in the battery slot.