Working Advice - Skil DT0551 Manual Original

OBJ_BUCH-1706-002.book Page 15 Tuesday, July 31, 2012 11:28 AM
When moving over a metal object the first time, its po-
sition is only indicated coarsely. When moving the
measuring tool over the metal object several times, the
object is detected more and more precise. After mov-
ing over the metal object several times (without lifting
the measuring tool from the surface), the position of
the metal object can be indicated accurately: When the
signal LED 2 lights up red and the audio signal sounds,
the metal object is below the centre of the sensor.
Scanning for "Live" Wires
The measuring tool indicates "live" wires/conductors that carry voltages
between 110 V and 400 V, and a frequency corresponding with the com-
mon standard (AC with 50 to 60 Hz). Other wires/conductors (carrying
DC, higher/lower frequency or voltage) as well as "dead" wires/conduc-
tors cannot be found reliably, but are possibly indicated as metal objects.
The scan for "live" conductors takes place automatically with each meas-
urement. When a "live" conductor is detected, indicator b appears on the
display. Move the measuring tool repeatedly over the area to localise the
"live" conductor more precisely. After moving over the "live" conductor
several times, its position can be indicated very accurately. When the
measuring tool is very close to the conductor, the signal LED 2 flashes red
and the audio signal beeps swiftly.
"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 110 V, 230 V and 400 V
(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 de-
tected with certainty. When measuring indicator c is indicated over a larg-
er range, then the material is screening-off electrically and the scan for
"live" wires/conductors is not reliable.

Working Advice

Measuring values can be impaired through certain ambient condi-
tions. These include, e.g., the proximity of other equipment that
produce strong magnetic or electromagnetic fields, moisture, me-
tallic building materials, foil-laminated insulation materials or
conductive wallpaper or tiles. Therefore, please also observe other
information sources (e.g. construction plans) before drilling, sawing
or routing into walls, ceilings or floors.
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