Metal detectors work due to the fact that
metal is conductive. Metal detectors create
an electromagnetic field, which penetrates
the ground.
When the coil senses a change in this field
(caused by a metal object) it sends a signal
back to the control box which then alerts
the operator. Metal detectors react to the
size, shape and composition of objects.
Typically, the larger the object, the deeper
it can be detected.
The X-Terra uses a single frequency (7.5kHz)
as the standard operating frequency. This
frequency has the ability to penetrate deep
into the ground.
26
The frequency of a detector is the number
of times a signal is transmitted into the
ground and received back, per second
(measured in Hertz - Hz).
“BEEP!”
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