-11-
METHOD OF OPERATION
(SEE FIGURE B)
The detection tool checks the
base material of sensor area
9
in
measurement direction
A
to the
displayed
measuring
depth.
Measurement is possible only
during movement of the detection
tool in the direction of travel
B
and
for a measuring distance of at
least 4” 10 cm.
Move the
detection tool in a straight line
with light pressure over the wall
so that the wheels remain in firm contact with
the wall. The object depth and, if possible, the
object material, are indicated on the display.
Optimal results are achieved when the measured
distance is at least 15 3/4” (40 cm) and the
detection tool is moved slowly over the entire
location. This method of operation ensures reliable
detection of outer object edges that run transverse
to the detection tool’s movement direction.
Always move crossways over the area to be
checked.
If several objects are located one over the other in
the wall, the object that is indicated in the display
is the one nearest to the surface.
The representation of the material types of
detected objects in the display
16
can deviate from
the actual object material types. This applies
particularly for very thin objects, which are
represented thicker in the display. Large cylindrical
objects (e.g. plastic or water pipes) can appear in
the display smaller than they actually are.
Detectable Objects
– Plastic pipes (e.g. water-filled plastic pipes, as
used in floor/wall-heating systems, with at least
3/4” in diameter; empty pipes with at least 1” in
diameter)
– Electrical wiring (independent of whether
carrying voltage or not)
– Three-phase wiring (e.g. to the stove)
– Low-voltage wiring (e.g. for door bell,
telephone)
– Metal pipes, bars, studs of any type (e.g. steel,
copper, aluminium)
– Reinforcing steel
– Wooden studs
– Hollow spaces
Measurements possible
– In concrete/reinforced concrete
– In brickwork (bricks, porous concrete, foam
concrete, aerated concrete, lime-sand brick)
– In light construction walls
– Under surfaces such as stucco, tiles, wallpaper,
hardwood flooring, carpet
– Behind wood, drywall
Special Measuring Cases
Based on the measuring priniciple, unfavorable
conditions can influence the measuring result, for
example:
– Multi-layered walls
– Empty plastic pipes and wood studs in hollow
spaces and light construction walls
– Objects running inclined in walls
– Moist walls
– Metal surfaces
– Hollow spaces in a wall; these can be indicated
as objects.
– Closeness to equipment that generates a
strong magnetic or electromagnetic field, e.g.
radio stations or generators.
MEASURING PROCEDURE
Switch the detection tool on. The “standard start
display” appears on display
16
.
Position the detection tool against the wall and
move it over the wall in the direction of travel (see
“Operation Instructions”, page 13). Measured
results are indicated on display
16
after a
minimum measuring distance of 4” (10 cm). To
ensure correct measurement results, move the
detection tool slowly and completely over the
assumed object in the wall.
If the detection tool is lifted away from the wall
during a measurement or not operated (moving
the device or pressing a button) for more than 2
minutes, the last measured result remains on the
display.
“Hold”
appears on the sensor-range
indicator
c
. When the detection tool is placed
against the wall again, moved on or when the start
button
11
is pressed, the new measurement will
start.
When LED
17
lights up red, an object is in the
sensor range. When LED
17
lights up green, no
object is in the sensor range. When LED
17
flashes, “live” wires / conductors are in the
sensor range.
SE
N
SO
SE
N
SO
O
R
A
B
B
9
Sensor
Concrete
t
x
e
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v
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Move
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