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The Power- on/ Power- off key 3-6 has to be pressed and not released until `CAL`
appears on the display. It lasts about 5 seconds from the last key operation until CAL
will appear.
The sensor 3-1 has to be placed carefully onto the respective base material. Then
the Zero key 3-3 has to be pressed, accompanied by a "beep" sound
If now NF:H (or F:H) is shown on the display, the sensor has to be lifted for more
than 5 cm. Then the Zero- key 3-3 has to be pressed and the instrument returns into
measurement mode. Now factory settings have been finished.
Comment: This procedure should always be done within 6 seconds. Otherwise it will
be automatically cancelled and restoration is invalid.
10 Notes
The linearization of the instrument, which is given by the calibration, can be changed
with the Ln- function.
It is strictly recommended not to perform any changes of the value of LN, as these
changes can lead to deviant measurement results.
Any adjustment or changed value of LN will seriously affect the accuracy. This
value should only be adjusted by professional persons.
Generally said:
The bigger the value of Ln, the smaller the reading on the display for the same coat-
ing thickness. Only a small change of the value of LN causes a big change in the
reading of the upper measurement range (at 500µm/20 mil).
The value of LN has to be adjusted as follows:
By pressing the Power-key: It lasts about 11 seconds from starting to press this key.
This value can be changed by pressing the Plus- / Minus- key after `LN` appears on
the display and the Power- key is released. This value is stored and afterwards the
Zero- key has to be pressed.
A: The reading value at low end has to be adjusted by pressing the Plus-/ or the Mi-
nus- key.
B: The value of LN is enlarged if the reading value at low end (e.g. 51µm) is o.k., but
the reading value at high end (e.g.432µm) is too big.
In contrast with this, the value of LN has to be decreased, if the reading value at low
end (e.g. 51µm) is o.k. but at high end (e.g. 432µm) it is too small.
C: Procedures from A to B have to be repeated until the reading value for every cali-
bration foil is satisfactory in its accuracy.
Annotation:
To have a look at the CE Declaration of Conformity, please click onto the following
link:
https://www.kern-sohn.com/shop/de/DOWNLOADS/
8
TC-BA-e-1712
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