Instruction Manual
Page 17
Figure 6 - Target conductivity
As you turn the Disc control more clockwise, objects with greater conductivity
will be ignored. Imagine if you turn the Disc control to approximately position
11 to ignore the pull-tab. (Pull-tabs are made from various metallic alloys, thus
their conductivity can vary. Disc control positions for pull-tabs may therefore
range between 11 and 15.) Making this adjustment will mean that all objects
having a similar or lower conductivity than the pull-tab will be ignored while
objects of higher conductivity are still accepted, as shown in Figure 7.
Figure 7 - Discriminating targets based on conductivity
Figure 8 shows some common objects and where the Disc control has to be set
to ignore them.
As a general rule, the two objects treasure hunters most commonly wish to
ignore are aluminum foil and pull-tabs. As can be seen in Figure 8, these
objects both cover a significant range on the Disc control. Setting the Disc
control “high” to eliminate all unwanted items will cause you to ignore a large
range of valuable items. We recommend that you only discriminate the most
common trash items, accepting the occasional unwanted target.
