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Operating manual

Lorenz Detecting Systems GmbH

Metal Detectors for professional, industrial and

security applications

Röpkestrasse 12

D - 30173 Hannover/Germany

Tel : +49 (0)511 5510670

Fax : +49 (0)511 5510671

mail@metaldetectors.de

www.metaldetectors.de

www.deepmax.com

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Declaration of conformity /

E MC directive

The following metal detector

LORENZ DEEPMAX X3

Correspond to the following EC requirements:

EC-EMC-directive version 89/336/EEC

The LORENZ DEEPMAX X3 series are found to meet

the specification requirements detailed, when tested

to the customers/ specification requirements.

Compatible norms are in particular

Test Specifications & Categories

Emissions EN61000-6-3:2001

Immunity EN61000-6-1:2001

Refer to certificate of testing No: E41105 Phönix Testlab

If any changes are made to the above mentioned appliances without

consulting Lorenz Detecting Systems GmbH this declaration becomes invalid.

Date: 24.11.2004

Signed: _____________________________

Lorenz Detecting Systems GmbH

General Management

Lorenz Detecting Systems GmbH · Röpkestr.˝12 · 30173 Hannover · Germany

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The LORENZ DEEPMAX X3 is one of the newest develop-

by a specially developed, LC Display and a minimum

ments in the field of Pulse GBS metal detectors. It is

amount of controls of which only one reset button will be

probably one of the most sensitive and stable metal

necessary to operate during work. At the same time this

detecting devices of its kind presently available. The LORENZ

detector model offers a number of features which are new

DEEPMAX X3 is the result of many years of research and

for a pulse metal detector. Quality electronics and very

development. A lot of efforts have been put into making

special designed electronic - circuitry produce benefits in

this new product and especially in the new improved metal

terms of easy of use as well as sensitivity.

classification and ground balancing facilities offered with

the LORENZ DEEPMAX X3 series.

The LORENZ DEEPMAX X3 gives a visual indication on the

LC Display for every metal being located. This time delay

The Pulse GBS (Pulse Ground Balancing System) is specialy

reading producing a number between 00 to 99 helps to

suitable for searching at depth. The performance of this

classify metal objects. The target classification circuitry is

electronic device is almost unaffected by salt water, most

only in some cases affected by the size of a metal object

types of mineralised grounds or temperature changes.

and therefore identifies small coins as well as large pieces

Specially designed electronics cancel out signals from the

of metal. The LORENZ DEEPMAX X3 also offers a sophisti-

ground. The LORENZ DEEPMAX X3 is therefore a reliable

cated and refined ferrous / non- ferrous target analysis

tool to locate metal objects at great depths even under the

which works more stable on difficult soils in conjunction

worst environmental conditions. A new improved circuit

with the 26cm or 35cm double D search coil. The Detector

design suppresses interference from power lines and a

also emits an audible sound by way of either a speaker or

power pulse technique produces very accurate signals to

headphones. Detection depths achieved (in air tests) are

obtain very high detection depths.

almost the same in many types of soils and therefore

considerably higher than those possible with standard

The LORENZ DEEPMAX X3 is a high quality specialist

pulse induction or sinewave VLF - TR Detectors.

Detector and it is designed to be used with both, small or

large coils. Large coils offer extreme depth capabilities for

The DEEPMAX metal detectors are often recognised as

big metal objects because of the strong and deep going

representing some of the highest quality and newest

magnetic field produced. Small coils are preferably used

developments in professional metal detecting equipment.

while searching for small objects like single coins or gold

nuggets.

We as a manufacturing company always try to keep the

highest standard on our products, therefore alternations

This model offers a great range on non-ferrous metal

of the design, specifications as well as the availability subject

objects in general. A very simple operation is guaranteed

to change without notice.

1. Safety information

For reasons of safety it is advisable to read this

manufacturer of the LORENZ DEEPMAX X3 should

operating manual first before turning the Lorenz

be used.

DEEPMAX X3 on. Special attention should be paid to

the following notes.

When digging for metal objects war material could

also be found. Precautions should be taken in advance

Check out, if the plug-in type charger supplied with

especially when big objects have been located.

the LORENZ DEEPMAX X3 fits with the AC mains of

your country. The AC plug of the recharger is inter-

Special kinds of mines could be triggered by the

changeable and therefore can be used at any countries

strong DC magnetic field produced by the search

mains. See chapter 7 for more detailed information.

coil. Special versions for military use are also available

The supplied recharger will work at AC voltages of

on request. Persons with implanted pacemaker or

90 V-264 V (see label).

other sensitive device should not approach to the

field of the search coil. Please understand that we as

Damaged connecting cables or search coils should

the manufacturer of the LORENZ DEEPMAX X3 can

no longer be used, because of possible electrical

not be made liable for any kind of damage caused

shock.

by or in conjunction with our products.

To avoid short circuits, wrong polarity or electrical

Design and specifications subject to change without

shock only spare parts and accessories offered by the

notice!

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2. Function

The LORENZ DEEPMAX X3 is based on the non- motion;

an audible signal either by headphones or built-in

Pulse GBS (Pulse Ground Balancing System). Short and

loudspeaker when a metal is in the near of the field of

intensive magnetic pulses are emitted by means of a

the search coil.

search coil first. Those magnetic pulses produce eddy

currents in conducting materials like metal objects for

Eddy currents produced in a metal object by means of a

example. Said eddy currents will be kept in a metal object

pulsed primary field, will die away differently depending

and will die away after the magnetic pulse emitted by the

on the conductivity of the metal object. The classification

search coil has turned off. This is the reason why it is

circuit therefore gives a visual time delay reading for the

possible to detect those eddy currents during the time

eddy currents received over a certain period of time. In

delayed receiving phase by means of the same search

addition a ferrous / non- ferrous indication for every metal

coil which now acts as a receiving coil. A rather complicated

being detected is working when a double D coil is in use.

electronic circuitry is necessary to detect those tiny voltage

This gives further information on the probable kind of

changes and has to separate that particular signal from

metal being located as well as the audio sound emitted,

interference also received. The signal has to be amplified

which makes it easy to predetermine the exact place and

to drive a voltage controlled oscillator (VCO), which emits

the size of the buried metal object.

2.1. Advantages

The Pulse GBS principle has got the advantage of using

depth capabilities for both ferrous and non-ferrous metal

large diameter coils and high transmitting power. This

objects when the Ground Balancing System is in use. Other

is especially necessary when searching at depth. Frame

systems often suffer from ground effects which reduce the

mounted cable coils of different size and shape can be

depth range in the ground. The LORENZ DEEPMAX X3 will

connected to the LORENZ DEEPMAX X3 without any

be able to locate objects at almost the same depths either in

adjustments.

most types of ground or "in air tests". The high sensitivity of

the LORENZ DEEPMAX X3 to non- ferrous metal objects like

A special adaptation circuit has been added to the

gold, silver and copper together with the new target analysis

Detector to suit with different coil systems automatically.

make this detector an outstanding device for many different

This ensures extreme depth capabilities with any coil

locating purposes.

connected. When enlarging the search coil diameter the

sensitivity to bigger objects will also rise. At the same

The LORENZ DEEPMAX X3 was developed to provide a

time smaller objects will be located less sensitive. This

number of features including high sensitivity and stability

is particularly desirable when locating large objects while

together with easy operation. The amount of controls was

ignoring small bits. Large coils offer very high detection

therefore reduced and a calibration of the Detector to our

ranges. Even in difficult soils where magnetic iron oxides

factory settings was also made to guarantee best results in

are present the LORENZ DEEPMAX X3 will offer extreme

the field:

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l highly sensitive to all kinds of metal

Please ask for details. The necessary hard- and

l stable operation on mineralised ground or salt water

software is in preparation. Further informations are

with Pulse Ground Balancing System

available on request.

l reliable / simple operation

External Datalogger and software can also be

l exact pinpointing with large coils

connected. Further informations are available on

l very easy and effective detection of large areas

request.

l rugged, refined mechanical construction

New computer aided search system with LC Display

l a variety of search coils are available for different

and new functions.

detection purposes

Signal strength bar graph, time delay reading (derived

l automatic adaptation of different coil sizes to the

from the eddy currents of the objec's size, conductivity

electronics

and permeability), ferrous / non-ferrous icons, battery

l small unwanted metal objects can either be

condition and the mode settings are displayed

identified or eliminated

simultaneously.

l fast audio response speed with voltage controlled

All functions are visuable on a large LC Display, no

oscillator (VCO)

menus to scroll to get to the function to be altered.

l logarithmic audio response and intensity bar graph

New improved searchcoils available.

rading for easy pinpointing

More stable ground balancing functions means less

l battery check with audio alarm tone

interference in urban areas.

l calibrated static (non-motion) target classification

Improved AUTO function which gives with most

with visual time delay reading

targets only one indication instead of two when

l improved ferrous / non-ferrous identification which

ground balancing system is selected.

is less affected by the ground

New GROUND balancing systems with double D

l precisely adjustable audio-threshold

coils gives additional depth to non- ferrous metal

l stable static response (acoustical and visual)

objects.

l waterproof search coils

Automatic false finding computer aided target

l interchangeable rechargeable Batterypack

identification.

l charge electronics with interchangeable AC-plug

for world-wide operation

l frequency control for interference elimination

l automatic push button retuning facility

l different Delay and Sensitivity settings to eliminate

small objects or for easy pinpointing

l extreme detection depths for very large metal objects

l optimal performance for the detection of small objects

like coins or other non-ferrous objects as well as for

bigger objects buried deep.

l single or dual induction balanced or differential coil

designs can be used.

l Multi sensor detection (MST) with several searchcoils

working at the same time without interfering each

other. Please ask for details.

l Built-in Datalogger comes with every DEEPMAX X3.

2.2. Applications

The LORENZ DEEPMAX X3 was developed for

LOR E N Z DEEPMAX X3. It is possible to eliminate

professional search and locating applications.

some unwanted objects like nails and foils or to

A variety of search coils can be connected to this

identify them as being small unwanted objects

metal detector. Large areas can be detected

while searching for bigger and deeper objects. In

effectively especially with frame coils. Saltwater,

conjunction with small coils the LORENZ DEEPMAX

most types of ground or temperature changes will

X3 is a great tool when searching for small objects

only slightly affect the detection range of the

deep in the ground.

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3. Controls on the front panel

ZERO-pushbutton

The ZERO push button is the most important control

Position 1, 2 and 3 offers an intensity intensity bar

as the whole electronics, including the discriminator

graph reading which works in parallel with the audio.

and the audio will be retuned when pressing this

The more the search coil approaches to the located

control for about 1-3 seconds. During that time no

metal object the higher the indication on the meter

metal should be in the direct field of the search coil.

and the higher the frequency of the audio is.

To retune simply hold the search coil in air horzontaly

Position 1 is an all metal mode which offers the highest

and away from any metal objects while simultaneously

sensitivity for every kind of metal and all object sizes.

pressing the ZERO button for about three seconds.

It should be in use when locating with small searchcoils

There should be almost no signal indication on the

and weakly mineralised soils like sand for example.

meter after having done this.

While turning the detector on with the POWER button,

Position 2 is selected while pressing the DELAY button

the electronics will automatically retune itself for five

again. This Position is mainly in use when locating with

seconds. The previously tuned tick-rate (AUDIO-control)

frame coils on weakly mineralised soils. This position

should be audible, or silent when the AUDIO-control

offers a very high sensitivity as well. Only the sensitivity

was turned to the left. With this button the present

to thin foils and coins will be reduced in this position.

audio tick-rate can always be recalled during operation

while pressing it for one second. When changing the

Position 3

search coil the ZERO push button has to be pushed

The LORENZ DEEPMAX X3 offers in this position less

down for about 3 to 5 seconds to retune the electronics.

sensitivity than in position 1 or 2. In most cases very

small pieces of foil or very small coins will no longer

SENS button

be detected. At the same time the LORENZ DEEPMAX

With the SENS- function control three different sensitivity

X3will work slightly more stable.

settings LOW; MED; HIGH (Low, Medium and High)

Iron, copper or silver objects will suffer from a small

can be selected by the operator. The current setting is

loss in sensitivity. Thin gold or silver plates will be

indicated near the bottom on the left hand side of the

detected less sensitive or can be even ignored. This

display.

position is particularly useful when searching for bigger

Different sensitivity settings can be selected by the way

objects with a limited detection range while ignoring

of operating the SENS button several times.

some smaller pieces of metal. When the universal

cable coil 8m or 12m has got more than three windings

DELAY button

the DELAY position has to be changed to position 2

Three different DELAY settings can be selected by the

or 3 to ensure best results.

way of this control. The selected setting is always

displayed at the bottom on the right hand side of the

Display.

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GROUND button

audio or on the display. The GROUND2 channel

Ground Balancing System GBS

makes sense when locating a few metal objects with

a similar signal response as magnetic