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18
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For pinpoint location of shallow buried metal the search coil may be used vertically over
the signal area. From experience the detection signals can be interpreted in the right
way.
A small metal object buried next to the surface will cause a short but intense signal.
A large metal object buried deep in the ground will cause a wide spread but much
weaker signal.
A shallow buried large target will generate a wide spread and strong signal which can
cover weaker signals from additional small targets. Always recheck area after target
removal.
Fig. 5:: Pinpointing with rim of detector head
9.
Suppression of small objects and interference
For difficult detection tasks i.e. to locate minimum amounts of metal select high
sensitivity and approach ground as close as possible.
Often detection on land or underwater may be interfered by small metal scrap such as
nails or pieces of wire. Also salt water can cause unwanted alarms if the search head is
changing ground clearance over the seabed. Such interference can be reduced by
adjusting the trimmer marked 'Z inside the battery compartment. (<ser.# 436) or by
setting the micro switches in the battery compartment to 35 µsec.
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© 2005, Ebinger Prüf- und Ortungstechnik GmbH.
Operations Manual UWEX
®
722 C
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