20
| English
1 609 929 X41 | (28.10.10)
Bosch Power Tools
Operating Modes
The measuring tool detects objects below the sensor area
9
.
Detecting Metal Objects
When scanning for metal objects, press the metal-detection
button
6
. The metal detection indicator symbol
c
is indicated
in the display and the illuminated ring
1
lights up green.
Position the measuring tool onto the surface to be
scanned and move it sidewards. When the meas-
uring tool comes close to a metal object, then the
amplitude of the measuring indicator
f
increases;
when it moves away from the object, the ampli-
tude decreases. At the position of maximum
amplitude, the metal object is located below the
centre of the sensor (below the marking opening
2
). As long as the measuring tool is above the metal object, the
illuminated ring
1
lights up red and a steady tone sounds.
To localise the object precisely, press the
“ZOOM”
button
4
and keep it pressed while
repeatedly (3x) moving the measuring tool over
the object. The “Zoom” function indicator
d
appears in the display. The “Zoom” measuring
indicator
e
has the greatest amplitude over the
centre of the metal object.
When very small or deeply embedded metal objects are being
detected and the measuring indicator
f
does not react, press
the
“ZOOM”
button
4
and keep it pressed while continuing to
move the measuring tool over the area. Observe only the zoom
measuring indicator
e
for the scan.
If there are any metal inclusions in the material being scanned,
then a continuous signal is indicated in the measuring indicator
f
. In this case, press the
“ZOOM”
button
4
and keep it pressed
while continuing to move the measuring tool over the area. Ob-
serve only the “Zoom” measuring indicator
e
for the scan.
If the metal object found is a magnetic (e.g. iron), then the in-
dicator for magnetic metals
h
is displayed. For non-magnetic
metals, the indicator for non-magnetic metals
i
is displayed. In
order for the measuring tool to differentiate between the metal
types, it must be positioned above the detected metal object
(the illuminated ring
1
lights up red). For weak signals, the in-
dication of the metal type is not possible.
For steel wire mesh and reinforcements in the scanned struc-
tural material, an amplitude of the measuring indicator
f
is dis-
played over the complete surface. In this case, always use the
“Zoom” function for the scan. For steel wire mesh, it is typical
that the indicator for magnetic metals
h
is displayed directly
above the rebar; the indicator for non-magnetic metals
i
is dis-
played between the rebars.
OBJ_BUCH-139-002.book Page 20 Thursday, October 28, 2010 9:38 AM
