Operating Modes - Bosch GMS 120 Professional Originalbetriebsanleitung

16 | English
tion. Pay attention to the amplitude of fine scale
j, and when in operating mode "Drywall" and
"Metal", additionally to the "CENTER " k indica-
tion, which will then allow for precise detection.

Operating Modes

The best measuring results are achieved
through selection of the operating modes. The
maximal detection depth for metal objects is
achieved in the operating mode "Metal". The
maximal detection depth for "live" conductors is
achieved in the operating mode "Power cable".
The selected operating mode can be recognized
at any time via the green illuminated operating-
mode indication 4.
Drywall
The operating mode "Drywall" is suitable for de-
tecting wood or metal objects in drywalls.
Press button 10 to activate the operating mode
"Drywall". The operating-mode indication 4
above button 10 lights up green. As soon as the
measuring tool is positioned against the base
material to be detected, ring 1 lights up green
and signals operational readiness.
In the operating mode "Drywall" all object types
are detected and indicated:
– Non-metal, e.g. a wood beam
– Magnetic, e.g. reinforcing steel
– Non-magnetic, but metal, e.g. copper
pipe
– "Live", e.g. a "live" conductor
Notes: In the operating mode "Drywall", other
objects, apart from wood and metal objects and
"live" conductors are also detected, such as
plastic tubing filled with water. For such ob-
jects, the indication c for non-metal objects is
indicated in display 3.
Nails and screws in the base material may cause
a wooden beam to be indicated as a metal ob-
ject on the display.
When display 3 indicates a continuously high
amplitude of measuring indicator i and fine
scale j, restart the measuring procedure again
by positioning the measuring tool at a different
location on the base material.
2 609 140 723 | (28.6.10)
When the illuminated ring 1 does not signal op-
erational readiness when positioning the meas-
uring tool on the base material being detected,
the measuring tool cannot properly detect the
base material.
– Press and hold button 10 until the illuminat-
ed ring lights up green.
– When starting a new measuring procedure
afterwards and positioning the measuring
tool onto a different wall or surface, you
must briefly press button 10.
– In rare cases, the measuring tool may not be
able to detect the base material because the
side with the sensor area 12 and the type
plate 13 is soiled or dirty. Clean the measur-
ing tool with a dry, soft cloth and restart the
measuring procedure.
Metal
The operating mode "Metal" is suitable for de-
tecting magnetic and non-magnetic objects in-
dependent of the wall material.
Press button 9 to activate the operating mode
"Metal". The illuminated ring 1 and indication 4
above button 9 light up green.
When the detected metal object is of magnetic
metal (e.g. iron), the symbol e is indicated on
display 3. For non-magnetic metals, the symbol
d is indicated. In order to differentiate between
metal types, the measuring tool must be posi-
tioned above the detected metal object (ring 1
is lit red).
Note: For reinforcement steel mesh and steel in
the examined base material, an amplitude is in-
dicated over the complete surface of measuring
indicator i. For reinforcement steel mesh, it is
typical that the symbol e for magnetic metal is
indicated on the display directly above the iron
rods, whereas between the iron rods, the sym-
bol d for non-magnetic metal will appear.
Bosch Power Tools