Hilti PS 38 Manual De Instrucciones página 25

5. To mark the position more exactly, move the tool to
the left or right until the object detected is shown at
the edge of the display.
6. Mark the position of the detected object by making
a mark beside the right or left marking notch (see
illustration B).
NOTE The object detected lies at the point of inter-
section of the upper and side marking notches.
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6.3 Examples of scan results
NOTE
In the following examples, the signal tone is switched on.
6.3.1 Steel reinforcing bars
A steel object, e.g. a steel rebar, is present in the sensor
area. To the left and right of this are other objects which
are outside the sensor area. The depth of the object is
approx. 8 cm (3.1 in). The tool emits a signal tone.
NOTE
Best scanning results will be obtained when the tool
is moved at right angles to the longitudinal rebars, as
described above. Mark the positions of the rebars found
and then shift the tool to the adjoining are above or below
and repeat the scan in order to verify the position of the
rebars and the direction in which they run. To locate the
transverse rebars, pivot the tool through 90° and scan
between the already detected longitudinal rebars in order
to avoid scanning along a longitudinal rebar.
6.3.2 Copper pipes
A non-ferrous metal object, e.g. a copper pipe, is within
the sensor area. It lies at a depth of approx. 4 cm (1.6 in).
The tool emits a signal tone.
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6.3.3 Plastic or wooden objects
A non-metallic object is within the sensor area. The object
is made of plastic or wood (or is a cavity) and lies close
to the surface. The tool emits a signal tone.
6.3.4 Live electric cables
NOTE
Depending on the size and depth of the object, it is not
always possible to determine without doubt whether it is
live (i.e. carrying electricity).
NOTE
When scanning, do not lay your hands on the surface of
the material.
A live metallic object, e.g. an electric cable, is within the
sensor area. It lies at a depth of approx. 1.5 cm (0.6 in).
The tool emits a warning signal tone for "live cables" as
soon as the electric cable is detected by the sensor.
6.3.5 Objects with a large surface area
A metal object with a large surface area, e.g. a metal
plate, is within the sensor area. It lies at a depth of
approx. 2 cm (0.8 in). The tool emits a signal tone.