STRUMENTI DI
MISURA
Pagina 10 di 14
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If the metal detector detects ferrous material, it will emit a warning sound, the needle will
move to the left and the analogue display will light up red.
If the metal detector detects non-ferrous material, it will emit a warning sound, the needle
will move to the left and the analogue display will light up blue.
Generally the closer the coil is to the object detected, the further the needle will move
towards the left or right extreme of the scale.
If the metal detector does not detect the object, check the battery is working properly and
make sure the coil is properly connected to the control unit.
5.3.2
Testing and outdoor use
1.
Find an area of land outside where there are no metals.
2.
Place an object of the same type of material that you want to find in the ground. Mark
the position where the object is placed to prevent losing sight of it, if it is placed in tall
grass or not easily visible.
3.
Turn the volume of the instrument up to 2/3 of its maximum power.
4.
Carried out the resetting of the instrument.
5.
Keeping the search coil parallel to the ground at a
distance of about 25 - 50 mm, slowly move it with
lateral displacements over the area where the test
object is positioned.
6.
If you want to look for other metallic materials in
an area where an object has already been
identified, it will be necessary to re-press the AUTO
TUNE button to make the needle return to the 0
position.
Figure 5
–
Movements with the metal detector .
5.4
Operating tips
Do not use the instrument as if it were a pendulum. Lifting
and not keeping the search coil perfectly parallel to the
ground could lead to incorrect readings.
Move the instrument slowly. Hurried use could lead to objects
being missed which are otherwise detectable.
Keep the coil as close as possible to the ground. The higher
the coil is held over the ground, the more difficult it will be to
detect small objects.
There may be situations in which the instrument can emit
false signals. These can be caused by electrical interference,
large pieces of irregular metals or loose soil.
Figure 6
–
Using the metal detector
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