Fisher M-Scope M-101 Manuel utilisateur

YEARS

M-101

Operating Manual

Rebar Locator & Metal Probe

FISHER RESEARCH LABORA-

TORY

Introduction ........................................................................... pg. 2

Control Panel ......................................................................... pg. 3

Operation ................................................................................ pg. 4

Principles of Operation ....................................................... pg. 5

Specifications......................................................................... pg. 6

CONTENTS

INTRODUCTION

The M-101 is a metal detector with a small search coil that pro-

vides a concentrated search signal. The M-101 will respond to all

types of metal (rebar, wire mesh, metal conduit, metallic trash,

metallic targets on the opposite side of surface to be scanned,

etc.) which may be associated with the area that is to be

searched. The M-101 will not respond to non-metallic targets such

as plastic or fiberglass. The M-101 is not designed to be a wire or

pipe tracer. Fisher Research manufactures other specific equip-

ment for that purpose.

Description

The M-101 comes ready to use for searching in floors, walls,

columns, and ceilings. The control housing is designed to

be chest or belt mounted for ease of use and comfort.

A carrying bag is included in the package.

CONTROL PANEL

Sensitivity

This control turns the M-101 On & Off. It also permits

a wide range of sensitivity to metal targets. MAXimum

position is normally used in the initial scanning and

locating operation. MINimum or reduced sensitivity is

used to help pinpoint metal objects.

Penetration

Controls the depth of penetration. This knob is free

spinning and does not have stops in either direction.

Meter

Gives a visual display of signal strength and Battery Test

Battery Test

Used to test the condition of the batteries in the M-101.

Battery Access

The M-101 is powered by two 9 volt batteries. Access to

the batteries is on the back of the detector.

PENETRATION

SENSITIVITY HEAD

PHONES

MIN

MAX

INCREASE

DECREASE

101

OPERATION

Turn the M-101 On (Sensitivity control knob). Depress the

Battery Test button. A response of 80 or more on the meter

indicates batteries are in an operable condition.

NOTE: Occasionally check the batteries during use, as weak

batteries could lead to reduced signal depth.

TEST BATTERIES

Turn the M-101 On (Sensitivity control knob) to the RED

arrow. If there is a sound and meter reading, reduce (turn

counter-clockwise) the Penetration control, or move search

coil away from any nearby metal.

Place search coil on the surface that is to be scanned. Con-

tinue to keep it away from any metal objects. Adjust the

Penetration control until the meter reads 10. (To increase

the meter reading, turn the Penetration control clockwise;

to decrease the meter reading, turn the control-counter clock-

wise.)

Scan the area to be searched. When a maximum signal is

located, slowly reduce the Penetration control (turn counter-

clockwise) to narrow the response area. This narrow re-

sponse should be the center line of the target. It should be

directly underneath the red line on the search coil. (Note:

As you reduce the Penetration, be careful not to completely

cancel out the target.)

If you find that it is difficult to get a narrow response, it

may be to your advantage to increase the distance from the

search coil to the target. Use a clean spacer such as a piece

of wood to elevate the coil. You may still need to adjust the

Sensitivity to pinpoint the target.

SCANNING

PRINCIPLES OF OPERATION

When the unit is properly tuned, the M-101 will locate ½inch

(1.25 cm) diameter rebar 8 to 9 inches (20 to 23 cm) from the

bottom of the search coil. A larger target can be located

deeper, a smaller target shallower.

With the M-101 initially tuned, the search pattern is wide

and deep (diagram A) , and as the operator reduces the

Sensitivity and Penetration, the search signal of the M-101

changes shape (diagram B). Thus, the idea for operation

is to reduce the search field so that only a small portion of

the signal is influenced by the metal target. Be aware that

if the target is to close to the coil, it is very difficult to get a

narrow response. This is when the use of a spacer will be

necessary.

Detectors electronic signal pattern

SPECIFICATIONS

Operating Frequency of Search Coil: .... 4.5 kHz

Sensitivity Adjustment Range: 12:1

Output Indication: ........ Meter - 1 milliamp, 1 - 100 linear scale

........................................... Speaker - 16 Ohm impedance

........................................... Headset (optional) - 8 Ohm impedance

Audio Frequency: .......... 450 Hz

Power Supply: ................ +/- 9 V, (2) 9V NEDA 1604

Coil Configuration: ....... Double D

Weight: ............................. 2.8 lbs (1.3 kg)

Dimensions: .................... Control Box ........... 3 x 5 x 6 inches (8 x 12 x 16 cm)

........................................... Handle ................... 0.75 x 23 inches (1.9 x 58.4 cm)

Shipping Weight: ........... 4 lbs (1.8 kg)

Shipping Dimensions: .. 26.5 x 6.25 x 6.25 inches (67 x 16 x 16 cm)

Subject to improvement or modification without notice.

Fisher Research Laboratory does not warrant suitability to specific use.

Fisher Research Laboratory shall in no event be liable for any direct, inciden-

tal, consequential or indirect damages.

QUALITY

Fisher detectors are renowned for their quality.

Each instrument is hand crafted in the USA with pride

PERFORMANCE

Our detectors are durable, dependable, and search deeper.

REPUTATION

Fisher produced the first patented metal detector in 1931. For

over 70 years, the Fisher logo has been a mark of excellence.

2-YEAR WARRANTY

Fisher believes in the products we produce and backs this belief

with a 2 year limited warranty, Warranty may vary outside the

United States. See your dealer for details

SERVICE

Fisher is committed to providing you, our valued customer, with

superior service. Each and every instrument is rigidly tested and

carefully inspected during assembly and before shipment.

Should you have any questions or problems, contact:

EXPORT DEPARTMENT

P.O. Box 1896

New Haven, CT 06508 USA

Tel 203.288.1638 Fax 203.287.8099

email: [email protected]

FISHER RESEARCH LABORATORY

200 West Willmott Road.,

Los Banos, California 93635

Tel 209.826.3292 Fax 209.826.0416

www.fisherlab.com email:[email protected]

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