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21
Detecting Wooden Objects
When scanning for wooden objects, press the wood-detection button
4
. The wood
detection indicator symbol
b
and the “Zoom” function indicator
d
are indicated in the
display and the arrow below the “Zoom” function indicator
d
flashes. The “AutoCal”
calibration indicator
g
and the illuminated ring
1
go out.
Position the measuring tool onto the surface being scanned.
Then press the “ZOOM” button
3
and keep it pressed. Now the
illuminated ring
1
lights up green, the “AutoCal” calibration
indicator
g
is displayed again, the “Zoom” function indicator
d
as
well as the arrow below it go out.
With the “ZOOM” button
3
pressed, move the measuring tool
uniformly above the structure without lifting it off or changing
the applied pressure. During the scan, thefelt pads
7
must always
have contact with the structure.
When a wooden object is detected, an amplitude is displayed in the measuring
indicator
f
. Move the measuring tool over the surface repeatedly to localise the
wooden object more precisely. After moving over the same area several times, the
wooden object can be indicated quite accurately: The illuminated ring
1
lights up red
and a steady tone sounds as long as the measuring tool is over the wooden object.
The measuring indicator f has the greatest amplitude over the centre of the wooden
object. The “Zoom” measuring indicator e is inactive when scanning for wooden
objects.
Caution:
When having placed the measuring tool onto the surface to be scanned
under which a wooden object is coincidentally located, and having moved it over the
surface, the measuring indicator f, the arrow below the “Zoom” function indicator d
and the illuminated ring
1
flash red. In this case, start the scan again by repositioning
the measuring tool somewhat offset onto the structure and pressing the “ZOOM”
button
3
again.
When scanning for wooden objects, metal objects are sometimes also indicated
as objects found at depths between 20–50 mm. To distinguish between wooden
and metal objects, switch to the detecting-metal function (see “Detecting Metal
Objects”). When an object is indicated at the same location in this function, then it
is clearly a metal object and not a wooden object. To continue searching for wooden
objects, switch back to the detecting-wood function.
Scanning for “Live” Wires
The measuring tool can indicate “live” wires/conductors with 50 or 60 Hz of AC.
Other wires/conductors can only be indicated as metal objects.
“Live” wires/conductors are indicated both during a metal scan as well as during a
wood scan. When a “live” wire/conductor is detected, the indicator
a
appears in the
display. Move the measuring tool over the surface repeatedly in order to localise
the “live” wire/conductor more precisely. After moving the measuring tool over the
surface several times, the “live” wire/conductor can be indicated quite precisely. If
the measuring tool is very close to the wire/conductor (four or five bars in indicator
a
), the illuminated ring
1
flashes red and the signal tone sounds with a rapid tone
sequence.
“Live” wires/conductors can be detected easier when power consumers (e.g., lamps,
appliances) are connected to the wire/conductor being sought and switched on.
Wires/conductors with 110V, 240V and 380V (three-phase current) are detected with
about the same scan capacity.
Under certain conditions (such as when behind metal surfaces or behind surfaces
with high water content), “live” wires/conductors cannot be detected with certainty.
These ranges can be recognised in the metal detection function. When a measuring
value is indicated all over a larger range of the measuring indicator
f
, then the material
is screening off electrically and the scan for “live” wires/conductors is not reliable.
Wires that are not “live” can be found as metal objects with the detecting-metal
function. However, stranded cables are not indicated (contrary to solid copper
conductors).
Operating Instructions
On condition of the principle, the measuring values can be impaired through certain
ambient conditions. These include, e.g., the proximity of other equipment that produce
strong magnetic or electromagnetic fields, moisture, metallic building materials,
foil-laminated insulation materials or conductive wallpaper.
Therefore, please also
observe other information sources (e.g. construction plans) before drilling, sawing
or routing into walls, ceilings or floors.