Handling The Metal Detector; Testing Reactions To Different Metals; Interpreting The Indicator And Audible Signals - Renkforce MD 150 Notice D'emploi

W hen you change the discrimination settings, the metal detector needs to be retuned each time. See
section "c) Default setting - TUNE" for more information.

12. Handling the metal detector

a) Testing reactions to different metals
In order to succeed on the "treasure hunt", you need to know how your metal detector responds to different metals,
their location and distance when detected. In order to gain experience, you should carry out various tests at home
using different metals and different detection angles. Test the handling of the metal detector before a search using
different kinds of metal (coins, rings, silver cutlery, etc.) in order to familiarise yourself with the device and to gain
experience. Try out the detector first at home. The test setup should not in a building on a floor or ceiling, as in many
cases, floors contain metal supports and reinforcing steel. We recommend using a plastic or wooden table with no
steel components, on which you can lay out the various objects.
• Before conducting a test, remove sources of interference such as electronic devices (wearables), jewellery,
watches and rings.
• Place the metal detector on a wooden or plastic table with no interfering metals nearby. Set the detection probe (1)
so that the flat side of the search coil points upwards in the scales.
• Move the metallic test object backwards and forwards over the search probe at a low height.
• Detect the individual objects made from known materials, such as coins, watches, rings, jewellery, old iron, etc. Note
the corresponding indicators, audible signals and distances. Practise until you can clearly identify the indicators and
audible signals without making mistakes.
• Hold the metallic test object at different angles and note how the audible signal changes.
• Repeat this process with test objects made from different, known metals.
b) Interpreting the indicator and audible signals
Switch the metal detector on. An audible signal sounds before default setting. When a metallic object is found during
the search, the indicator and audible signal are dependent on a number of different factors and settings.
• The strength of the pointer movement on the analogue display (5) indicates the distance of a found signal (usually
the metal). The pointer movement is a measure of the signal strength. The audible signal becomes louder the closer
the detection probe (1) is to the signal source; it is reduced as you move farther away.
• When the differentiation threshold for metal discrimination is set to the minimum position on the DISCRIMINATION
dial (7), metals are recorded and indicated uniformly. The metal detector firstly eliminates ferrous metals. When the
DISCRIMINATION dial (7) is set fully clockwise to the maximum position, the metal detector eliminates thin metal
film, then thicker films and then small aluminium parts, according to the current setting.
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