Wohler HBF 420 Bedienungsanleitung Seite 50

Measuring
Performing the resistance mea-
surement
Average value
Fig. 8: Situation of the
measurement points at the log
50
To perform a resistance measurement, follow the
steps below (see short manual at the end of this
manual):
•
Switch on the meter, select the measurement
mode "resistance measurement", enter the
material code and perform the zero calibra-
tion.
•
Split the wood log in the middle and perform
the measurement immediately after that at the
inside part of the log.
•
The electrodes should penetrate into the wood
approx. 6 mm.
ATTENTION!
Only if possible without applying force.
NOTE!
Measurements taken of wood are to be performed
diagonally to the direction of the fibres; in other
words, a line drawn between the measurement
needles would dissect the fibre of the wood.
•
To perform a measurement, keep the M-key
(3) pressed.
In general the wood moisture should be measured
at three different points (see adjacent figure).
After that, the user has to calculate the average.
Please note the following points when performing
the measurement:
NOTE!
Chose a measuring point without any knobs, resin
or fissures.
•
Do not measure at the front side or at the
exterior side of the split log.