STRUMENTI DI
MISURA
Pagina 13 di 14
T
u
tti
i
diri
tti
d
i ri
p
ro
du
zi
on
e
e
d
iv
u
lg
az
io
n
e
d
el
p
res
en
te
M
an
u
ale
T
ecn
ic
o
e
d
el
la
d
o
cu
m
en
ta
zi
on
e
ci
ta
ta
e/
o
a
lleg
at
a,
s
on
o
r
iser
va
ti.
E
' f
at
to
espr
ess
o
d
iv
iet
o
d
i r
ip
ro
du
rr
e,
p
u
b
bli
ca
re
o
d
is
tr
ib
u
ire
in
fo
rm
azi
o
n
i t
ra
tte
d
al
p
res
en
te
M
an
u
ale.
C
o
py
ri
gh
t b
y
FE
R
V
I
7
LOCATING THE OBJECT
Correctly and precisely locating an object makes the subsequent digging work much easier
and shorter. Do not rush to dig at any detection made by instrument.
Accurate localisation requires practice by the user. It is recommended to practice detecting
personal objects previously hidden to understand the various nuances of detection of the
instrument.
Some objects will be difficult to locate because of the direction of the search movements. Try
changing the search direction to improve the outcome.
Follow these steps to accurately locate an object:
1.
When the metal detector detects a buried object,
continue to move the coil back and forth over the object.
Take a visual note of the position where is the strongest
signal is given.
2.
Stop the coil exactly over the marked spot and move it
slowly back and forth with (away and toward you) to
verify that the marked point is where the emitted signal
is strongest.
3.
Carry out movements to X over the presumed position of
the object and check that the centre of the movement
corresponds with the increased noise from the
instrument.
Figure 7
–
Localisation
Oxidation
Metal objects buried for a long time are most likely oxidised. The oxidation of metals creates a
halo around the detected object. Precise detection is therefore more difficult because the
metal detector also detects the halo of oxidation.
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.
fervi.com
