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SEARCH COIL SWEEPING HINTS:
While holding the search coil level and
about 25 to 50 mm (1—2") above the
ground, slowly move the search coil
over the area where you placed the
sample, sweeping the search coil in a
side-to-side motion.
Sweep slowly – hurrying makes you
miss targets.
Never sweep the search coil as if it
were a pendulum. Raising the search
coil while sweeping or at the end of a
sweep causes false readings.
If the detector detects the material, it sounds a tone and the pointer moves to the
type of metal it found. If the detector does not detect the material, take sure you
are moving the search coil correctly.
Notes:
•
The detector responds with a strong signal when it detects most valuable
metal objects. If a signal does not repeat after you sweep the search coil over
the target a few times, the target is probably junk metal.
•
False signals can be caused by contaminated ground, electrical interference,
or large irregular pieces of junk metal. False signal are usually broken or non-
repeatable.
•
Try finding other metal in the area. When you find a metal item, wait a few
seconds after the tone stops before continuing, to allow the detector time to
rest (or, press the red button on the handle to return the pointer to the centre
of the meter).
FINE-TUNING THE DETECTOR
After you become familiar with how your detector works, you can fine-tune it to
make it more selective in what it finds.
Discrimination is the detector’s ability to differentiate between types of metal. The
detector’s
DISCRIMINATION
setting determines whether the detector will
distinguish between different types of ferrous and non-ferrous metals.
