STRUMENTI DI
MISURA
Pagina 12 di 14
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Large pieces
In case of finding large dimensions metal pieces the instrument cannot correctly discriminate
the material and therefore also in the case of ferrous materials the needle of the instrument
will move on the right side and the panel will glow blue.
Discrimination settings
Each time the search area is changed the resetting must be carried out again and the
discrimination value will be reset as the change of area can change the sensitivity of the
instrument.
6.1
False positives
Due to the extreme sensitivity of the metal detector, small pieces of debris or other
interferences may confuse the signal. The key to correctly read the information and give
importance only to very strong, stable and repeatable signals. During the movement of the
coil back and forth in the same position, learn to distinguish the signals that occur randomly
from those that are stable and repeatable.
To minimise this problem in areas with a lot of interference, examine only small pieces of land
at a time, making short movements and rechecking the same spot several times.
Unexploded ordnance
If the metal detector finds an unexploded bomb, do not try to move it or defuse it. Move away
from the location immediately and contact the local authorities. Prevent other people from
approach the area by warning them of the danger.
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