The Target Category Icons are outlined in three groups: Iron, Gold and Silver.
DEPTH AND TARGET DISPLAY
READING THE DISPLAY
The display shows the PROBABLE
identification of the metal detected, as
well its PROBABLE depth.
Each time an object is detected, the
Depth Bar segments illuminates in
addition to the Target-ID Icon.
The Bar Graph is a graphic
representation of the distance from
the searchcoil to a coin-sized object.
• More bars indicate a deeper object.
• Fewer bars indicate a shallower
object
.
TARGET GROUP CATEGORY ID
-
Iron Objects, Gold Flakes
-
Foil, Small Gold Items
-
US Nickels, Gold, Pull Tabs
-
Brass, Aluminum Screw Caps, Lead,
2 Euro Coin, Pull Tabs
-US Zinc Cents, 1 Euro Coin
-Copper Coins, Small Silver Coins (US Dime)
-
Medium Silver Coins (US Quarter)
-
Large Silver Coins (US Half Dollar)
-
Very Large Silver Coins (US Silver Dollar)
The effective electrical conductivity of an object depends on its metallic
composition, size, shape and orientation relative to the searchcoil. Since coins
are minted to tightly controlled specifications, they can be accurately identified.
Identification of pull-tabs and foil is less consistent because these kinds of
targets come in wide variety. In general, smaller objects, and objects made from
lower conductivity alloys such as iron, bronze, brass, lead, pewter and zinc will
read lower on the conductivity scale. Larger objects and objects made from
higher conductivity alloys such as silver, copper and aluminum, will tend to read
higher. The notable exceptions are gold, which usually reads low because it is
rarely found in large pieces, and zinc pennies, which read moderately high
because of their size and shape. Although nails and other iron and steel objects
will usually give low readings, ring-shaped pieces of iron (for instance steel
washers and harness rings) will usually produce medium to high readings. Flat
pieces of iron or steel, such as can lids, will occasionally do the same.
Caution: Many other types of metal items can fall under any one of these categories.
It is impossible to accurately classify ALL buried objects.
See Target ID Coin Reference Chart (Pg 14).
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