Geoquip GeoZone A User manual

GeoZone ‘A’ Perimeter Security System
Installation Manual
GDALPHA SENSOR
AND GEOZONE ‘A’
Perimeter Protection System
from
Installation Manual
QA0609 Rev 3 – 16/12/2015
Prepared by: Paul Cook
Approved by: John Barratt

GeoZone ‘A’ Perimeter Security System
Installation Manual
All illustrations and sizes shown in this manual are
intended as a guide only, and do not form any part of any
contract between Geoquip Worldwide and its customers.
All specifications and designs shown in this manual are
subject to alteration by Geoquip Worldwide without notice
at any time.
Copyright © Geoquip (Worldwide) Ltd 2015
Foreword
This manual covers the installation, connection, commissioning and testing of the
GeoZone ‘A’ analyser designed by Geoquip Worldwide for perimeter fence protection.
It is designed as a simple stand alone detection device giving alarm and tamper
voltage-free contact outputs.
Who Should Use This Document?
All sections of the manual assume a basic knowledge of electrical installation
techniques.
Related Documents:
QA427 Multi-Zone Annunciator Operation Manual

GeoZone ‘A’ Perimeter Security System
Installation Manual
Contents
1 Introduction............................................................................. 1
1.1 General.....................................................................................................................................1
1.2 Principle of Operation.............................................................................................................1
1.3 Fundamentals of Perimeter Protection..................................................................................1
1.4 Climb-Over Detection..............................................................................................................2
1.5 Permissible Zone Lengths......................................................................................................2
1.6 Sensor Configuration Guidelines...........................................................................................2
1.7 Statement of Compliance........................................................................................................2
2 Site Survey............................................................................... 4
2.1 Pre-Installation Checklist........................................................................................................4
2.2 Calculating Sensor Length .....................................................................................................4
2.3 Electrical Interference.............................................................................................................4
3 Sensor Deployment................................................................. 6
3.1 General Handling.....................................................................................................................6
4 General Installation Methods ................................................. 8
4.1 Fence Sensor Placement........................................................................................................8
4.2 Fence Posts .............................................................................................................................8
4.3 Bi-Steel Posts ..........................................................................................................................9
4.4 Corner Posts............................................................................................................................9
4.5 Ground Level Variation.........................................................................................................10
4.6 Non-Sensitive Sections.........................................................................................................10
4.7 Sensor Installation.................................................................................................................11
4.8 Coping With Sensor Damage ...............................................................................................12
5 Chain Link Fences................................................................. 14
5.1 General...................................................................................................................................14
5.2 Fixing The Sensor..................................................................................................................14
6 Welded Mesh Fences............................................................ 15
6.1 General...................................................................................................................................15
6.2 Sensor Alignment.................................................................................................................. 15
7 Palisade Fences .................................................................... 17
7.1 Fence And Sensor Configuration......................................................................................... 17
7.2 Fixing The Sensor..................................................................................................................17
7.3 Allowing For Sensor Damage...............................................................................................18
7.4 Corner Posts..........................................................................................................................18
8 Gates...................................................................................... 19
8.1 General...................................................................................................................................19
8.2 Sensor Configuration............................................................................................................19
8.3 Single Gate.............................................................................................................................19
8.4 Double Gates ......................................................................................................................... 20
8.5 Sliding Gates.......................................................................................................................... 20
9 Sensor Terminations............................................................. 22
9.1 General...................................................................................................................................22
9.2 Sensor Termination............................................................................................................... 22
9.3 Impactor Kit Steel Glands.....................................................................................................23
9.4 Termination Boxes ................................................................................................................23
9.5 Termination Procedure .........................................................................................................23

GeoZone ‘A’ Perimeter Security System
Installation Manual
10 Sensor Testing.......................................................................25
10.1 General....................................................................................................................................25
10.2 Test Procedure.......................................................................................................................25
11 GeoZone ‘A’ Analyser ........................................................... 26
11.1 Analyser Installation..............................................................................................................26
11.2 Power Requirements .............................................................................................................26
11.3 Power Supply Cable...............................................................................................................26
12 Analyser Connections........................................................... 27
12.1 General....................................................................................................................................27
12.2 GDALPHA Sensor Cable Connections.................................................................................27
12.3 dc Power Supply....................................................................................................................27
12.4 Alarm and Tamper Outputs...................................................................................................28
12.5 Ground Stud Connection.......................................................................................................28
13 Controls and Indicators ........................................................ 29
13.1 Sensitivity Adjustments.........................................................................................................29
13.2 Climb Sensitivity....................................................................................................................29
13.3 Cut Sensitivity........................................................................................................................30
13.4 LED Indicators........................................................................................................................30
14 Commissioning......................................................................32
14.1 Inspecting the System...........................................................................................................32
14.2 Analyser Testing ....................................................................................................................32
14.3 Adjusting the Analyser ..........................................................................................................32
14.4 Adjusting For Fence Cut-Through Detection.......................................................................32
14.5 Adjusting For Climb-Over Detection....................................................................................32
14.6 Testing The System ...............................................................................................................33
15 Fault Finding..........................................................................34
15.1 Installation Related Problems...............................................................................................34
15.2 Sensor Related Problems......................................................................................................34

GeoZone ‘A’ Perimeter Security System
Installation Manual
Page 1
1 Introduction
1.1 General
The GeoZone ‘A’ system is a simplified advanced perimeter intrusion alarm system
based on a microphonic sensor. The sensor is attached to the perimeter fence and
detects intruders attempting to climb over or cut through the fence.
The GeoZone ‘A’ family comprises:
The GeoZone ‘A’ analyser.
The GDALPHA sensor cable.
GQCOMBO end-of-line termination box.
On manned sites the alarm and tamper outputs can be connected to third party alarm
panels or our multi-zone annunciator (part numbers GW6ZA and GW12ZA). These
provide zone disable facility and led indication of alarm status. See QA427 Multi-Zone
Annunciator Operation Manual for details of the annunciators.
There are four stages to the installation of the GeoZone ‘A’ system.
Install the sensor cable.
Install the analyser.
Install the end-of-line box.
Install the service cable.
1.2 Principle of Operation
The GDALPHA sensor detects the vibrations caused by an attempted intrusion as the
perimeter fence is either cut through or climbed over and converts them into electrical
signals which are processed by an analyser. This, in turn, decide whether the signals
constitute an attempted break-in and, if so, an alarm signal is activated. The relay
output is normally connected to some form of annunciator unit which, in turn, operates
alarm bells or other indicators.
Care must be taken to ensure that the sensor is positioned and fixed correctly to
enable it to respond to the vibrations caused by an intrusion. The sensor must be fixed
to the fence as closely as possible so that the maximum amount of signal is generated
by the sensor in response to the intrusion attempt. The installation notes in this manual
are designed to ensure that, as far as possible, the above conditions are satisfied.
Most problems experienced on site stem from a lack of understanding of the principle
of operation of the system and consequential installation errors. It is vital that this
manual is thoroughly read and understood prior to system installation.
1.3 Fundamentals of Perimeter Protection
The prevention and detection of an intrusion onto a site depends on the installation of
an adequate physical barrier in combination with an appropriate sensor system.
Together they can alert the operator to the presence of unacceptable levels of
perimeter activity and assist in the decision to activate an alarm.
Without a sensor system any barrier is unintelligent and cannot be used to warn when
there is an intruder activity; on the other hand the best sensor system cannot provide
intruder detection unless it is properly attached to a suitable barrier, which can serve as
a fundamental component towards giving the system its maximum detection capability.
Perimeter protection should therefore be designed as a combination of appropriate
fence construction and sensor system to achieve the pre-determined expectations for
intruder detection.

GeoZone ‘A’ Perimeter Security System
Installation Manual
Page 2
GDALPHA sensor will meet these expectations when correctly installed on any fence
constructed so that it causes an intruder to generate a level of vibration or resonance
which can be detected by the sensor within the range of sensitivity settings.
IMPORTANT
The most critical feature of any GeoZone ‘A’
system is the quality of the sensor installation
1.4 Climb-Over Detection
To achieve climb over detection the vibration of the fence fabric must last for
approximately four seconds. Due to this, experience has shown that, generally, climb
over detection can only be reliably achieved on fences that are a minimum of 2.4 m in
height.
On fences lower than this climb over detection can be enhanced by the addition of a
barbed wire or razor coil topping. This slows the intruder's progress, thus increasing
the duration of the vibrations to such a level that they can be detected by the sensor.
1.5 Permissible Zone Lengths
The optimum installation is a zone length of 100m on a fence of up to 2.4 m high but,
subject to risk analysis and important factors such as fence type and quality, terrain,
camera capability, personnel deployment and alarm response, under suitable
conditions zone lengths of up to 200m can be achieved.
1.6 Sensor Configuration Guidelines
The following variables in the fence construction will affect the sensor performance, the
probability of detection of climb over and cut through and the level of interference from
extraneous causes:
Height of fence
Tension of the fence fabric
Setting of the fence base in concrete
Gauge of metal used in fence fabric
Resonance of the fence
Additional bracing or supports
Plastic or galvanised coating
Method of intrusion
The table below provides guidance on suggested sensor configurations on common
fence constructions for heights up to 2.4 m.
Type of Fence
Double Run
Single Run
Chain Link Light gauge (2 mm)

Medium gauge (3 mm)

Heavy gauge (4 mm+)

1.7 Statement of Compliance
The equipment described in this manual complies with all relevant sections of EMC
Directive 89/336/EEC introduced in January 1996.
Specifically, the equipment has been tested to the following standards:

GeoZone ‘A’ Perimeter Security System
Installation Manual
Page 3
BSEN 50130-41995+A1:1998+A2:2003
BSEN 55016-2-3: 2006
BSEN 61000-6-3:2007
BSEN 61000-4-2:1995 + A1 & A2
BSEN 61000-4-3:2002 + A1
BSEN 61000-4-4:1995 + A1 & A2
BSEN 61000-4-5:1995 + A1 & A2
BSEN 61000-4-6:1996 + A1 & A2
While the system complies with the standards listed above, it is still possible that
certain high level interference sources can have an adverse effect on the system
performance. The guidelines detailed later in this manual should be followed to
minimise such problems.
A technical report detailing these tests and procedures is available from Geoquip
Worldwide on request.
Additionally, to satisfy the requirements for CE marking of the product, the equipment
complies with all other relevant standards for this type of equipment.

GeoZone ‘A’ Perimeter Security System
Installation Manual
Page 4
2 Site Survey
2.1 Pre-Installation Checklist
To ensure that the condition of the fence does not compromise the performance of the
GDALPHA, the following checklist should be studied and any necessary repair work
carried out on the fence line prior to commencement of the installation.
1. Ensure that the fabric of the fence is intact and continuous. Areas which have
suffered corrosion damage, vandalism, vehicle damage, or other deterioration,
must be replaced or repaired.
2. Ensure that the same fabric type is used throughout each zone. Sections of
different types of fabric will produce different responses, making it difficult to
optimise the system settings.
3. Ensure that posts are firmly fixed in the ground and that the fence fabric is well
supported and not liable to sag or chafe against the posts in bad weather.
4. Ensure that there are no overhanging branches of trees in contact with the
fence and that the fence line is generally free from vegetation which can muffle
vibrations caused by intrusion attempts.
5. Ensure that metalwork fixed to the fence such as signs or outriggers are firmly
fixed and do not vibrate or rattle in bad weather conditions.
6. Ensure that gates are secured so that they cannot rattle when closed.
IMPORTANT
In general, any fence movement which can cause metal
to metal contact is a potential source of false alarms.
Efforts should be directed at eliminating,
as far as possible, all such causes.
2.2 Calculating Sensor Length
The length of sensor required for each zone can be calculated as follows:
This example assumes a 150m zone.
Length of zone
150m
(A)
Add sensor for posts (5% of A)
10m
(B)
7 m per corner =
(C)
Double Leaf Gate (4 x Gate width) =
(D)
Single Leaf Gate (4 x Gate width) =
(E)
Total Sensor Required =
A+B+C+D+E
2.3 Electrical Interference
When planning the location of sensor runs, care must be taken to avoid placing the
sensor close to sources of electrical interference, particularly any device which may
produce alternating magnetic fields. Such devices include motors, contactors,
transformers, and power cables carrying large currents.
Normally the sensor will reject such stray interference however, if the interference is
sufficiently strong, false alarms may be produced. Power cables which are steel wire

GeoZone ‘A’ Perimeter Security System
Installation Manual
Page 5
armoured are sufficiently well screened by the armouring to minimise any interference
problem, but it is good practice to allow a separation between the sensor and the
power cable of at least 1 m. Sensor running parallel to power cables for distances
greater than a few metres must be avoided.
Particularly powerful sources of electrical interference include electrified rail lines and
electric fence units, the supply wiring of which tend to radiate broad band electrical
interference.

GeoZone ‘A’ Perimeter Security System
Installation Manual
Page 6
3 Sensor Deployment
IMPORTANT
All personnel involved with installation of sensor must understand that it is a
sensitive vibration detection device and is to be handled accordingly.
3.1 General Handling
1. In general the sensor is removed from a reel by placing a pole through the reel
and unwinding it by rotating of the reel. Failure to do this will allow kinks to form
in the sensor that will cause internal damage. Figure 1 shows this method of
deploying sensor prior to fixing to the fence. Ensure that the sensor is not
subjected to jerking or tugging whilst being wound off the reel. Note that two
people will be required when dealing with large reels of sensor.
Figure 1
2. Sensor deployed and ready for fixing to a fence must be protected from
damage by persons walking on the sensor or vehicles driving over the sensor.
Figure 2 illustrates typical maltreatment of sensor which must not occur. Sensor
subjected to such treatment will be damaged beyond repair and will prove
costly to replace as sensitivity can only be verified after attachment to the fence.
Figure 2