Tecnetics Alpha 2000 Manuel d'utilisateur télécharger pdf (Page 14)

QUICK-START DEMONSTRATION

I. Supplies Needed

• a Nail • a Zinc Penny (dated after 1982)

• a Nickel • a Quarter

II. Position the Detector

a. Place the detector on a table, with the

search coil hanging over the edge.

Or better, have a friend hold the

detector, with the search coil off the

ground.

b. Keep the search coil away from walls,

floors, and metal objects.

c. Remove watches, rings, and jewelry.

d. Turn off lights or appliances, whose electromagnetic emissions may

cause interference.

e. Pivot the search coil back.

III. Power Up. Press .

IV. Wave each object over the search coil.

a. Notice a different tone for each object:

Low Tone: Medium Tone: High Tone:

Nail Zinc Penny, Nickel Quarter

b. Motion is required.

Objects must be in motion over the search coil to be detected.

V. Then press .

a. The word “IRON” disappears from the display

VI. Wave the nail over the search coil.

a. The nail will not be detected

b. The nail has been “discriminated out.”

VII. Press four more times.

a. The words FOIL, 5¢, ALUM, and ZINC disappear.

VIII. Wave the nickel

a. The nickel will not be detected.

IX. Press to toggle down to NOTCH.

Then press 3 times

a. 5¢ reappears on the display

X. Wave the Nickel.

a. The nickel is now again detected.

b. The nickel has been “notched in.”

READING THE DISPLAY

The Liquid Crystal Display (LCD) shows the

PROBABLE identification of the targeted

metal, as well as the PROBABLE depth of the

target.

The detector will register a consistent target

identification, upon each sweep of the coil,

when a buried target has been located and

identified. If, upon repeated passes over the

same spot, the target identification reads

inconsistently, the target is probably a trash

item, or oxidized metal. With practice, you will

learn to unearth only the repeatable signals.

The segment identifications are highly

accurate, when detecting the objects

described on the label. However, if an object

registers in a given category for an unknown

buried object, you could be detecting a

metallic object other than the object described

on the label, but with the same metallic

signature. Also, the greater the distance

between the target and the coil, the less

accurate the target identification.

GOLD TARGETS Gold objects will register

on the left side of the LCD scale.

Gold flakes will register under iron.

Small gold items will register under foil

or 5¢.

Medium-sized gold items will

Large gold items will register under

Zinc.

SILVER TARGETS: Silver objects will

Qts. or 50¢+.

IRON: All but the very largest iron objects will

could indicate a worthless item such as a nail,

or a more valuable historic iron relic.

FOIL: Aluminum foil, such as a gum

wrapper, will register as foil. A small

broken piece of pull tab may also register

here.

NICKEL: Most newer pull-tabs from beverage

cans, the type intended to stay attached to the

can, will register here. Many gold rings will also

PT: Older pull tabs, which always detached

completely from the can, register here. Many

medium size gold ring also register here.

ZINC: Newer US pennies (post-1982), and

Canadian $1 and $2 coins register here. Many

non-US coins of recent vintage will also

DIME: Dimes and older copper pennies (pre-

1982) register here.

50¢+ Qts: Quarters register here, Silver

Dollars, Half-Dollars and very large iron

objects, like a sewer lid, will register here.

Caution:

The target indications are visual

references. Many other types of metal can fall

under any one of these categories. While the

detector will eliminate or indicate the presence

of most common trash items, it is impossible

to accurately classify ALL buried objects.

DEPTH INDICATOR:

The Depth Indicator is

accurate for coin-sized objects. It indicates

the depth of the target, in inches.

Large and irregularly-shaped objects will yield

less reliable depth readings

When passing over an object, the indicators

will light up and stay illuminated for three

seconds. If the depth indication varies with

each sweep, try sweeping at different angles;

there may be more than one target present.

With practice, you will learn the difference

between accurate readings, multiple targets,

and highly erratic readings which evidence

trash or irregularly shaped objects.

DEPTH AND TARGET DISPLAY

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Tecnetics Alpha 2000 Manuel d'utilisateur Page 14

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