Sweeping the Coil
You will obtain the best performance
when the coil is swept close and parallel
to the ground at all times. This will increase
detection depth and improve the response to
small objects. Avoid excessive brushing of the
coil on the ground. Though the coil assembly
is rigid and durable, sudden jolts or bangs
can cause random signals and inaccurate
target IDs. Careful sweeping will ensure the
detector performs to an optimum level
at all times.
Targets
Metal objects are referred to as targets.
Targets are comprised of ferrous and
nonferrous metals. Ferrous metals are those
containing iron; such as steel, nails and some
types of coins.
Nonferrous metals are those which are not
magnetic, such as gold, silver, copper, bronze
and aluminium.
You may wish to nd a range of both ferrous
and nonferrous targets.
Examples of common targets:
Desired high ferrous target – war relic
Undesired high ferrous target – iron nail
Desired nonferrous target – gold coin
Undesired nonferrous target – pull-tab
Practise sweeping the coil over the ground
in a side-to-side motion while slowly walking
forward at the end of each sweep. Slightly
overlap the previous sweep to ensure full
ground coverage. An average sweep speed is
four seconds from left to right to left.
CAUTION: Incorrect coil sweeping can
generate false signals or miss targets.
Detecting Basics
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