UWEX 722 C Especificaciones descargar pdf (Pagina 18)

18 Operations Manual UWEX

722 C

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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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UWEX 722 C Especificaciones Pagina 18