Power Cable; Working Advice; Marking Objects; Temperature Control - Würth MD 12 Traducción Del Manual De Instrucciones De Servicio Original

When the illuminated ring 1 does not signal opera-
tional readiness when positioning the measuring tool
on the base material being detected, the measuring
tool cannot properly detect the base material.
• Press and hold button 10 until the illuminated ring
lights up green.
• When starting a new measuring procedure after-
wards 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 measuring tool with a dry, soft
cloth and restart the measuring procedure.
Metal
The operating mode "Metal" is suitable for detecting
magnetic and non-magnetic objects independent 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 meas-
uring tool must be positioned 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 indicated
over the complete surface of measuring indicator i.
For reinforcement steel mesh, it is typical that the sym-
bol e for magnetic metal is indicated on the display
directly above the iron rods, whereas between the iron
rods, the symbol d for non-magnetic metal will
appear.

Power Cable

The operating mode "Power cable" is suitable only
for detecting "live" conductors (110–230 V).
Press button 8 to activate the operating mode
"Power cable". The illuminated ring 1 and indica-
tion 4 above button 8 light up green.
When a "live" conductor is detected, indication f
appears on the display 3. Move the measuring tool
repeatedly over the area to localise the "live" conduc-
tor more precisely. After moving over the "live" con-
ductor several times, it can be indicated very
accurately. When the measuring tool is very close to
the conductor, the illuminated ring 1 flashes red and
the audio signal beeps swiftly.
Notes:
• "Live" conductors are indicated in any operating
mode.
• "Live" conductors can be detected easier when
power consumers (e.g. lamps, machines) are con-
nected to the sought conductor and switched on.
• Under certain conditions (such as below
metal surfaces or behind surfaces with high
water content), "live" conductors cannot be
securely detected. The signal strength of a
"live" conductor depends on the position of the
cable. Therefore, apply further measurements in
close proximity or use other information sources to
check if a "live" conductor exists.
• Voltage-free conductors can be detected as metal
objects in the operation mode "Metal". This does
not apply for stranded conductors (contrary to
solid conductors or cable).
• Static electricity can lead to inaccurate indication
of electric lines, e.g., over a large range. To
improve the indication, place your free hand flat
on the wall next to the measuring tool, in order to
remove the static electricity.

Working Advice

❏ Measuring values can be impaired through
certain ambient conditions. These include,
e.g., the proximity of other equipment that
produce strong magnetic or electromag-
netic fields, moisture, metallic building
materials, foil-laminated insulation mate-
rials or conductive wallpaper or tiles. There-
fore, please also observe other information
sources (e.g. construction plans) before drilling,
sawing or routing into walls, ceilings or floors.

Marking Objects

If required, detected objects can be marked. Perform
a measurement as usual. Once you have found the
boundaries or the centre of an object, mark the
sought location through the marking hole 2.

Temperature Control

The measuring tool is equipped with a temperature
control indicator, as accurate measurements are only
possible as long as the temperature within the meas-
uring tool remains constant.
When the temperature control indicator g lights up,
the measuring tool is not within the operating temper-
ature range or was subject to large variations in tem-
perature. Switch the measuring tool off and
allow it to adjust to the ambient temperature
before switching it on again.
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