Operation
10
Fig. 5: Wöhler Hammer Probe
The result of the resistance measurement will be
more exact, if the Hammer Probe is used, be-
cause the needles of the probe can be inserted
more deeply into the wood, so that humidity can
even be measured inside the wood.
Bulk material
Fig. 6: Wöhler FW 550 Moisture
Scale for Bulk Material
The Wöhler FW 550 Moisture Scale has to be
connected to the meter for measuring the mois-
ture of bulk material.
NOTE!
The meter will automatically detect, if a hammer/lance probe for the measurement of
firewood logs or the moisture scale is connected. The measurement mode for firewood
logs or for bulk material will automatically be displayed in this case.
4
Operation
Fig. 7: Transport lock on the right side of
the meter
CAUTION!
For the transport deactivate the battery with the
transport lock. When the instrument is delivered,
the battery is always deactivated.
Push the transport lock to the left to activate
the battery. Use a pointed object (wire or pen)
for this purpose.
4.1
Switching the meter on and off
Fig. 8: Key pad with on/off-key marked
Turning on the Meter: Press on/off-key shortly
(on the right)
Turning off the meter: Long press the on/off-
key for 3 sec.
Transport lock
