3
2
12
Install the Sensor
Care must be taken to install the sensor. Ensuring the needles are parallel and
aligned axially is imperative to collecting good data and being able to easily and
quickly
determine
direction
of
flo
w.
Corrections
can
be
made
but
there
is
no
substitute for good preparation and installation of the needles. It is recommended
that you watch the
installation video
before beginning the installation
of the
needles
for the firs
t
time.
12.1
Measure Bark Depth
Begin by removing any loose flakes or rough fibrous bark so that you achieve a
data or reference point from which to measure from.
Measure the bark depth using a bark depth gauge.
Alternatively,
use
a
fla
t
blade
screwdriver
turned
on
the
horizontal
plane
(in the
vertical plane the screwdriver will merely split the fibres and Not provide
measurem
ent
of where the bark, phloem and cambium stop and the sapwood
commence)
. Hammer the screw driver in until it stops moving and you hear a
change in pitch. This indicates the sapwood has been reached.
Mark the edge of
the tree on the screw driver, remove and measure this distance.
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