Page 6 Schaller GmbH Version 2.2_en
Measuring method
Even if the kiln drying method is the only measuring
procedure appropriate for verification according to DIN
20287 it is time consuming, in-situ application can very
seldom be carried out; the method also has the
disadvantage that the samples are destroyed. Schaller
GmbH (Ltd.) has developed the P2, P4 and LM5
generation – a measuring method which provides exact
measuring results within seconds. Yet it is not possible
to develop a measuring device that is ideal under every
single condition; even P2, P4 and LM5 have a certain
limited range to provide optimum results. In order to
minimize incorrect applications resulting from that fact
we have provided you
with a list.
Important! Here are the most common
reasons for measuring errors.
•Product temperature beyond ambient conditions:
The temperature of the measuring device and of
the product should be nearly equal.
•Wrong switch position
•Uneven pressing
•Wrong application on rolls
Press your measuring device lengthwise to the
longitudinal axis of the product roll, otherwise the
bearing area of the sensor is too small.
•Product pile not thick enough
•Electrically conductive material
All metallic objects as well as electrically
conductive packaging film or paper coloured with
carbon black influence the measuring result in a
negative way and must no be positioned within a
range of 500 mm below the sensor area.
