Delta 4000 Metal Detector User Manual download pdf (Page 16)

TARGET IDENTIFICATION

In DISCRIMINATION mode, targets are identified both audibly and visually as

follows:

1. Different pitch tones for different types of metals

2. A 2-digit target I.D.

3. An illuminated icon within the target category best describing it

AUDIO TARGET IDENTIFICATION:

Tones identify targets as follows:

LOW TONE

Ferrous objects, such as iron and steel, like nails and tin cans.

Smallest-sized gold objects and some steel bottle caps

MEDIUM TONE

Foil, pull-tabs (some new style), nickels, steel bottle caps.

Newer pennies (post-1982 are minted from zinc)

Larger gold pieces, small brass objects, and most bottle screw caps.

Most recent-vintage non-US coins.

Pull-tabs (old style, some new style)

HIGH TONE

Silver and copper coins, large brass objects

Older pennies (pre-1982 were minted from copper)

Dimes, quarters, half-dollars, silver dollars

Susan B. Anthony and Sacajawea dollar coins

Flattened aluminum cans (with a stronger signal than a coin)

Audio Target Identification (ATI) classifies metals into three categories.

LOW TONE

Nails & Small Gold

MEDIUM TONE

Pull Tabs, Nickels, Smaller &

Larger Gold, Zinc Pennies

(Post 1982), Many screw caps

HIGH TONE

Copper, Silver & Brass

Copper Pennies (Pre 1982)

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Delta 4000 Metal Detector User Manual Page 16