Application Notes
27
Hydromette BL A plus
5.1.1.4
Ram electrode M 18
The two needles of the ram electrode must be driven to the
required measurement depth crosswise to the grain direction with a
slide hammer. To be able to determine the core moisture content,
the electrode tips must penetrate to between 1/4 and 1/3 of the
overall wood thickness.
Pulling out the needles is also done with the slide hammer with the
impact direction upwards. If possible, the hexagon nuts should be
tightened with a spanner or pliers before beginning a series of
measurements. Loose electrode tips break easily.
Attention:
Do not completely drive in the
electrode tips. There should be
approx. 4 - 5 mm space between the
wood surface and the hexagon nut.
This particularly applies when using
Teflon-insulated tips.
Figure 5-2: Ram electrode M 18
If woods with very different moisture distribution (e.g. water
pockets) are used for measurement, we recommend the use of
Teflon-insulated electrode tips, which enable very precise
measurement of zones and layers. They are available in packets of
10 in lengths of 45 mm (order no. 4450) and 60 mm (order no.
4500).
