C-SCOPE METADEC2 Instrucciones de operaciones descargar pdf (Pagina 11)

Sensitivity (R)

The

SENSITIVITY

CONTROL

regulates the sensitivity

of

the

detector

to

drift,

instability

etc,

as

well

as

to

metal objects. The recommended starting

point

is

O.

By

increasing

the

Sensitivity

by

tuning

this

control

into

the + sector

the

detector

will

be

more

prone

to

drift,

erratic signals, ground interference. etc. Where there is

no

ground

effect

or

outside inter-

ference the Sensitivity

Control

can

be

operated at higher levels.

But

when the signal becomes unsteady

or

erratic.

the

Sensitivity level should be reduced

to

obtain

a

clear. steady

tuning

threshold.

Only

when

the

tuning

is

constant and steady

will

the

detector

operate

at the best

optimum

depth penetration.

Once

the

Ground

Exclude Levels and Discriminate Levels have been

set

the

Ground

Mode can be

engaged

by

operating the Ground

Switch

(vi)

which

also retunes the detector.

Commence searching

as

described on

P.

6.

If

the tuning level varies. reset the

TUNiNG

by

operating the

Ground

push-button

(vii

or

if

this

in

ineffective. re-set the Ground Exclude level

as

described

on

P.

7.

When an object

has

been located and

pinpointed,

move the

detector

search head away

from

the

target object. change the mode

to

DISCRIMINATE

by

operating the

DISCAIM

push

button

(vii);

hold

the

detector

head steady.

or

in contact

with

the

ground

itself;

ensure

the

detector

is

set at the

correct threshold

tuning

level.

by

again pressing

DISCAIM

retune push

button

(vii),

and then

carefully re-scan

the

target

object.

preferably keeping

the

search head

in

contact

with

the

ground.

to

ensure

maximum

depth

and analysis.

If

the

target

is

accepted

the

meter

will

move up

the

scale

to

the

right.

If

the target

is

discriminated

against

or

rejected.

the

meter

will

move

down

the scale

to

the

left.

It

is

possible

to

operate

in

the

DISCAIM

mode

continuously,

if

the

ground

conditions

allow

and

mineralisation

is

not

severe.

by

selecting

DISCAIM

at

switch

(viiI.

in

DISCAIM

it

is

best

to

operate

at

the

lower

levels

of

discriminate, I.e.

below

01

- 10.

Alternatively,

or

also, the SENSITI

VITY

can

be reduced

at

(A)

to

ensure

the

threshold

Tuning

level can be maintained and performance maintained.

F. USE

IN

THE

FIELD

.The

METADEC

II

can be

used

in various ways

to

suit various sites

or

conditions.

For

reference a series

of

diagrams

has

been prepared

to

illustrate this.

Diagram 5

Inland Site

with

Ground

Effect.

Method 1.

Diagram 6

Inland Site

with

Ground

Effect.

Method 2.

Diagram 7

Beach Site

with

Ground

Effect.

Method 2.

Diagram 8 Beach Site

with

Ground

Effect.

Method

2.

Diagram 9

All

Metal Detection.

Method

1.

Diagram

10

Heavily Contaminated site.

Method 1.

Diagram

11

Heavily Contaminated site.

Method 2.

Recommended Settings

Inland Site

with

Ground

Effect

If

pre-set-ground

is

off.

and all

other

meter console switches are

off

and manual ground exclude

is

set at

O.

and when

the

search head

is

lowered

to

the

ground

the

signal

on

the

meter

falls

to

the

left.

then

the

site

has

NEGATIVE

GAOUND

EFFECT

caused

by

iron

mineralisation.

If

when

the

search

head

is

lowered the signal rises

to

the

right

the

site

has

POSITIVE

GROUND

EFFECT.

Set

METADEC

II

as

Diagram 5.

or

6.

..

n

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 17 18 19

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