6
line between the two potentiometers). In this case, loss of depth is not as tangible, while
successfully eliminating most magnetic objects.
When the frame moves over a very large ferrous object, the sound level does not
change, and appears sound after the signal bypass the facility, which disappears gradually or
disappears quickly if the frame back over the object. Once passed, in what direction the sound
again appears, and gradually disappears. This is so-called reverse sound effect that occurs
only for large ferrous objects especially if the subject is not deep under the surface.
4.The detection depth depends on the following:
-size, shape and location of the object in the soil. The bigger the reflecting surface of the object
the deeper it is to be found;
-soil composition and mineralization level – the drier and more homogeneous the soil the easier
it will be to adapt the device and for the device to detect deeper. Under stones, dry sand or in
clay utensil, metals are easier to be found than in freshly dug out or damp soil.
-the longer the object has been in the soil the easier it will be to be found as a result of the good
contact with the soil. The longer the object has been in the ground the bigger the field is and
imitates bigger object!
-type of detecting coil. The bigger the diameter of the coill the deeper it will be able to detect
metals.
-operator's experience and skills.
You can do field tests by yourself using the device if you bury different metal objects in different
depth but you should leave them
in the ground for at least 3 months
. Thus the test results
will be more reliable. You should mind the soil type and the moisture composition in it. Best
results are received when the soil is dry.
“
Relicscan
” can work with different types of coils and frames 1x1m. frame / 1,25 x1,25m
/ 1,5 x 1,5m. / 2x2m. and smaller round coils - 36cm. and 45cm. Search frames are used for the
detection of large and bulky metal objects deeply buried to about 5-6 meters., A small round
coils is used to detect and accurately locate a small metal objects at depths up to 2m. Can also
be used in narrow and rough places where it is impossible to use the search frames.
As the larger the size of the search frame or coil, the greater will be the depth of detection.