CLC/TS 50131-2-7-1:2009

SLOVENSKI STANDARD
01-oktober-2009
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Alarm systems - Intrusion and hold-up systems -- Part 2-7-1: Intrusion detectors - Glass
break detectors (acoustics)
Alarmanlagen - Einbruch- und Überfallmeldeanlagen -- Teil 2-7-1: Einbruchmelder -
Glasbruchmelder (Akustisch)
Systèmes d’alarme - Systèmes d'alarme contre l’intrusion et les hold-up -- Partie 2-7-1:
Détecteurs d'intrusion - Détecteurs bris de glace (acoustiques)
Ta slovenski standard je istoveten z: CLC/TS 50131-2-7-1:2009
ICS:
13.310 Varstvo pred kriminalom Protection against crime
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CLC/TS 50131-2-7-1
SPÉCIFICATION TECHNIQUE
March 2009
TECHNISCHE SPEZIFIKATION
ICS 13.320
English version
Alarm systems -
Intrusion and hold-up systems -
Part 2-7-1: Intrusion detectors -
Glass break detectors (acoustic)

Systèmes d’alarme -  Alarmanlagen -
Systèmes d'alarme contre l’intrusion Einbruch- und Überfallmeldeanlagen -
et les hold-up - Teil 2-7-1: Einbruchmelder -
Partie 2-7-1: Détecteurs d'intrusion - Glasbruchmelder (Akustisch)
Détecteurs bris de glace (acoustiques)

This Technical Specification was approved by CENELEC on 2009-03-06.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to
make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting
national standards in force.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TS 50131-2-7-1:2009 E

Foreword
This Technical Specification was prepared by the Technical Committee CENELEC TC 79, Alarm systems.
The text of the draft was circulated for voting in accordance with the CEN/CENELEC Internal Regulations,
Part 2, Subclause 11.3.3.3 and was approved by CENELEC as CLC/TS 50131-2-7-1 on 2009-03-06.
The following date was fixed:
– latest date by which the existence of the CLC/TS
has to be announced at national level (doa) 2009-09-06
EN 50131 will consist of the following parts, under the general title “Alarm systems – Intrusion and hold-up
systems”:
Part 1 System requirements
Part 2-2 Intrusion detectors - Passive infrared detectors
Part 2-3 Requirements for microwave detectors
Part 2-4 Requirements for combined passive infrared and microwave detectors
Part 2-5 Requirements for combined passive infrared and ultrasonic detectors
Part 2-6 Opening contacts (magnetic)
Part 2-7-1 Intrusion detectors - Glass break detectors (acoustic)
Part 2-7-2 Intrusion detectors - Glass break detectors (passive)
Part 2-7-3 Intrusion detectors - Glass break detectors (active)
Part 3 Control and indicating equipment
Part 4 Warning devices
Part 5-3 Requirements for interconnections equipment using radio frequency techniques
Part 6 Power supplies
Part 7 Application guidelines
Part 8 Security fog device/system
This Technical Specification provides for security grades 1 to 4 (see EN 50131-1) passive acoustic glass
break detectors installed in buildings and uses environmental classes I to IV (see EN 50130-5).
The purpose of a detector is to detect the acoustic energy exclusively emitted by the physical destruction of a
glass pane, which allows intrusion to the monitored area for example in doors, windows or enclosures and to
provide the necessary range of signals or messages to be used by the rest of the intruder alarm system.
Functions additional to the mandatory functions specified in this standard may be included in the detector,
providing they do not adversely influence the correct operation of the mandatory functions.
The number and scope of these signals or messages may be more comprehensive for systems that are
specified at the higher grades.
This Technical Specification is only concerned with the requirements and tests for the detector. Other types
of detectors are covered by other documents identified as EN 50131-2-X / CLC/TS 50131-2-X.
__________
– 3 – CLC/TS 50131-2-7-1:2009
Contents
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 5
3.1 Terms and definitions . 5
3.2 Abbreviations . 6
4 Functional requirements . 7
4.1 Event processing . 7
4.2 Operational requirements . 8
4.3 Detection . 9
4.4 Immunity to false alarm sources . 10
4.5 Tamper security . 10
4.6 Electrical requirements . 12
4.7 Environmental classification and conditions . 12
5 Marking, identification and documentation . 13
5.1 Marking and/or identification . 13
5.2 Documentation . 13
6 Testing . 13
6.1 General test conditions . 13
6.2 Basic detection test . 15
6.3 Performance tests . 15
6.4 Switch-on delay, time interval between signals and indication of detection . 17
6.5 Fault condition signals or messages: self tests . 17
6.6 Tests of immunity to false alarm sources . 18
6.7 Tamper security . 20
6.8 Electrical tests . 22
6.9 Environmental classification and conditions . 24
6.10 Marking, identification and documentation . 25
Annex A (informative) Example of the setup of the test room . 26
Annex B (normative) Catalogue of standard glass types . 27
Annex C (normative) List of small tools suitable for testing immunity of casing to attack . 28
Annex D (normative) Dimensions & requirements of a standard test magnet . 29
D.1 Normative references . 29
D.2 Requirements . 29
Annex E (normative) Immunity test: Small objects hit sensitivity . 32
Annex F (normative) Immunity test: Soft objects hit sensitivity . 33
Annex G (normative) Immunity test: Hard objects hit sensitivity . 34
Annex H (normative) General testing matrix . 35
Annex I (normative) Immunity test: Noise sensitivity . 37
Annex J (normative) Performance test setup . 38
J.1 Performance test setup. 38
J.2 Alternative performance test setup . 39
Annex K (informative) Manipulation test: Resistance to re-orientation of adjustable mountings . 41

Figures
Figure A.1 – Test room . 26
Figure D.1 – Test magnet – Magnet type 1 . 30
Figure D.2 – Test magnet – Magnet type 2 . 31
Figure E.1 – Immunity test: Small objects hit sensitivity . 32
Figure F.1 – Immunity test: Soft objects hit sensitivity . 33
Figure G.1 – Immunity test: Hard objects hit sensitivity . 34
Figure I.1 – Immunity test: Noise sensitivity . 37
Figure J.1 – Performance test setup . 38
Figure J.2 – Potential test setup . 40

Tables
Table 1 – Events to be processed by grade . 7
Table 2 – Generation of indication signals or messages . 8
Table 3 – Performance test requirements . 9
Table 4 – Tamper security requirements . 11
Table 5 – Electrical requirements . 12
Table 6 – Range of materials for masking tests . 22
Table 7 – Operational tests . 24
Table 8 – Endurance tests . 25
Table B.1 – Standard glass types . 27
Table H.1 – General testing matrix . 35
Table J.1 . 39
Table J.2 . 39

– 5 – CLC/TS 50131-2-7-1:2009
1 Scope
This Technical Specification is for passive acoustic glass break detectors installed in buildings and provides
for security grades 1 to 4 (see EN 50131-1), specific or non-specific wired or wire-free detectors and uses
environmental classes I to IV (see EN 50130-5). This Technical Specification does not include requirements
for passive acoustic glass break detectors intended for use outdoors.
A detector shall fulfil all the requirements of the specified grade.
Functions additional to the mandatory functions specified in this standard may be included in the detector,
providing they do not adversely influence the correct operation of the mandatory functions.
This Technical Specification does not apply to system interconnections.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 50130-4 Alarm systems – Part 4: Electromagnetic compatibility – Product family standard:
Immunity requirements for components of fire, intruder and social alarm systems
EN 50130-5 Alarm systems – Part 5: Environmental test methods
EN 50131-1 Alarm systems – Intrusion and hold-up systems – Part 1: System requirements
EN 50131-6 Alarm systems – Intrusion and hold-up systems – Part 6: Power supplies
EN 60068-1:1994 Environmental testing – Part 1: General and guidance
(IEC 60068-1:1988 + corrigendum Oct. 1988 + A1:1992)
EN 60068-2-52:1996 Environmental testing – Part 2: Tests - Test Kb: Salt mist, cyclic (sodium chloride
solution) (IEC 60068-2-52:1996)
EN 60529 Degrees of protection provided by enclosures (IP code) (IEC 60529)
EN ISO 527-1 Plastics – Determination of tensile properties – Part 1: General principles (ISO 527-1)
EN ISO 527-2 Plastics – Determination of tensile properties – Part 2: Test conditions for moulding
and extrusion plastics (ISO 527-2)
EN ISO 1183 series Plastics – Methods for determining the density of non-cellular plastics
(ISO 1183 series)
EN ISO 2039-2 Plastics – Determination of hardness – Part 2: Rockwell hardness (ISO 2039-2)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 50131-1 and the following apply.
3.1.1
glass breakage
physical destruction of a glass pane, which allows intrusion to the monitored area. For example in doors,
windows or enclosures
3.1.2
passive acoustic glass break detector
detector that is mounted in the area to be monitored, which detects an airborne acoustic event created by a
glass breakage
3.1.3
basic test source
signal simulator designed to verify the basic function of the detector
3.1.4
incorrect operation
physical condition that causes an inappropriate signal or message from a detector
3.1.5
basic detection test
test whose purpose is to verify the operation of a detector after conditioning
3.1.6
masking
interference with the detector input capability such as an introduction of a physical barrier (e.g. metal, plastic,
paper or sprayed paints or lacquers in close proximity to the detector) or changing the characteristics of the
monitored area (e.g. placing wet newspapers on the outside of the monitored glass pane)
3.1.7
standard immunity glass pane
this glass pane will be used for all immunity tests, where a glass pane is needed, according to Annex B
3.1.8
Reverberation Time 60
time taken for the volume of a single sound to decrease by 60 dB. Reverberation time (RT60) at a frequency
of 4 kHz shall not be less than 0,5 s and no more than 1 s. If required, reverberation time may be adjusted by
installing absorbent panels or surfaces in the room
3.2 Abbreviations
For the purposes of this document, the abbreviations given in EN 50131-1 and the following apply.
BTS – Basic Test Source
EMC – ElectroMagnetic Compatibility
RT60 – Reverberation Time 60
– 7 – CLC/TS 50131-2-7-1:2009
4 Functional requirements
4.1 Event processing
Detectors shall process the events shown in Table 1. Detectors shall generate signals or messages as
shown in Table 2.
Table 1 – Events to be processed by grade
Event Grade 1 Grade 2 Grade 3 Grade 4
Intrusion M M M M
No stimulus M M M M
Masking Op Op M M
Tamper Op M M M
Low supply voltage Op Op M M
Total loss of power supply Op M M M
Local self test Op Op M M
Remote self test Op Op Op M
Key
M = Mandatory
Op = Optional
Table 2 – Generation of indication signals or messages
Event Signals or messages
Intrusion Tamper Fault
Intrusion M NP NP
No stimulus NP NP NP
a
Masking M Op M
Tamper NP M NP
Low supply voltage Op Op M
b
Total loss of power supply M Op Op
Local self test pass NP NP NP
Local self test fail NP NP M
Remote self test pass M NP NP
Remote self test fail NP NP M
Key
M = Mandatory
NP = Not Permitted
Op = Optional
a
An independent masking signal or message may be provided instead.
NOTE 1 This permits two methods of signalling a masking event: either by the intrusion
signal and fault signal or by a dedicated masking signal or message. Use of the intrusion
signal and fault signal is preferable, as this requires fewer connections between CIE and
detector. If multiple events overlap there will be some signal combinations that may be
ambiguous. To overcome this ambiguity it is suggested that detectors should not signal
‘intrusion’ and ‘fault’ at the same time except to indicate masking. This implies that the
detector should prioritise signals, e.g. 1 Intrusion, 2 Fault, 3 Masking.
b
Alternatively total loss of power supply shall be determined by loss of communication with
the detector.
NOTE 2 When, in Table 1, an event may optionally generate signals or messages, they shall
be as shown in this table.
4.2 Operational requirements
4.2.1 Time interval between intrusion signals or messages
Wired detectors shall be able to provide an intrusion signal or message not more than 15 s after the end of
the preceding intrusion signal or message.
Wire free detectors shall be able to provide an intrusion signal or message after the end of the preceding
intrusion signal or message within the following times:
– grade 1 300 s;
– grade 2 180 s;
– grade 3  30 s;
– grade 4  15 s.
4.2.2 Switch on delay
The detector shall meet all functional requirements within 180 s of the power supply reaching its nominal
voltage as specified by the manufacturer.

– 9 – CLC/TS 50131-2-7-1:2009
4.2.3 Self tests
4.2.3.1 Local self test
The detector shall automatically test itself at least once every 24 h according to the requirements of Tables 1
and 2. If normal operation of the detector is inhibited during a local self-test, the detector inhibition time shall
be limited to a maximum of 30 s in any period of 2 h.
4.2.3.2 Remote self test
A detector shall process remote self tests and generate signals or messages in accordance with Tables 1
and 2 within 10 s of the remote self test signal being received and shall return to normal operation within 30 s
of the remote test signal being received.
4.3 Detection
4.3.1 Detection performance
The detector shall generate an intrusion signal or message when a simulated or real glass breakage
according to the corresponding requirements of Table 3 is performed.
Table 3 – Performance test requirements
Requirement Grade 1 Grade 2 Grade 3 Grade 4
Verification of detection performance M M M M
Performance test: hole drilling with Op Op Op M
diamond hole saw
Performance test: glass cutting Op Op Op M
Key
M = Mandatory
Op = Optional
4.3.1.1 Verification of detection performance
This test will verify the detection performance of a glass breakage according to the supported conditions
claimed by the manufacturer. It will verify the covering range including the maximum and minimum range as
well as the performance of randomly chosen mounting locations of the detector, according to Annex B for
different glass types and sizes claimed to be supported (types and dimensions) by the manufacturer.
A number of standard glass types and sizes need to be passed by this test according to the corresponding
test section.
4.3.1.2 Performance test for hole drilling with a diamond hole saw
This test will verify the detection performance by drilling a hole using a diamond hole saw on different glass
types and dimensions according to the supported conditions claimed by the manufacturer and Annex B.
It will verify if the detector is able to identify and signal the change of the integrity of the monitored side of the
glass pane.
4.3.1.3 Performance test for glass cutting
This test will verify the detection performance by cutting the glass using a standard glass cutter on different
glass types and dimensions according to the supported conditions claimed by the manufacturer and
Annex B. It will verify if the detector is able to identify and signal the change of the integrity of the monitored
side of the glass pane.
4.3.2 Indication of detection
Powered detectors at grades 3 and 4 that include processing capabilities shall provide an indicator at the
detector to indicate when an intrusion signal or message has been generated. Self-powered detectors (e.g.
detectors which rely on the energy resulting from the glass breakage) do not require such an indicator.
At grades 3 and 4 this indicator shall be capable of being enabled and disabled remotely at access level 2.
4.4 Immunity to false alarm sources
The detector shall have sufficient immunity to false alarm sources if the following requirements have been
met. No intrusion signal or message shall be generated as a result of the false alarm sources according to
each individual test clause.
The tests for this clause will be performed on the standard immunity test glass pane as defined in 3.1.7,
wherever a glass pane is required.
4.4.1 Immunity to small objects hitting the glass
The detector shall not generate an intrusion signal or message when small objects such as hail, sand, gravel
etc. hit the outside of the monitored glass. The tests are described in 6.6.1.
4.4.2 Immunity to soft objects hitting the glass
The detector shall not generate an intrusion signal or message when soft objects (e.g. a human fist) hit the
outside of the monitored glass. The tests are described in 6.6.2.
4.4.3 Immunity to hard objects hitting the glass
The detector shall not generate an intrusion signal or message when hard objects (e.g. handlebars of a
bicycle) hit the outside of the monitored glass. The tests are described in 6.6.3.
4.4.4 Immunity to single frequency sound sources
The detector shall not generate an intrusion signal or message when various frequencies and levels of noise
(like brakes of a lorry, etc.) are applied to the detector. The tests are described in 6.6.4.
4.4.5 Immunity to wide band noise
The detector shall not generate an intrusion signal or message when a wide band of frequencies at the same
time, which are close to the frequency of a glass breakage (e.g. branches of a tree moving against the
window) are applied to the detector. The tests are described in 6.6.5 and 6.6.6.
4.5 Tamper security
Tamper security requirements for each grade of a detector are shown in Table 4.

– 11 – CLC/TS 50131-2-7-1:2009
Table 4 – Tamper security requirements
Requirement Grade 1 Grade 2 Grade 3 Grade 4
Resistance to access to the inside of the detector M M M M
Detection of access to the inside of the detector Op M M M
a
Removal from the mounting surface Op M M M
Detection of masking Op Op M M
Magnetic field immunity Op M M M
Magnet type defined in Annex D – Type 1 Type 2 Type 2
b
Resistance to or detection of re-orientation Op M M M
Applied torque – 2 Nm 5 Nm 10 Nm
Key
M = Mandatory
Op = Optional
a
Required for wire free detectors only.
b
Required for detectors mounted on brackets only.

4.5.1 Resistance to and detection of unauthorised access to the inside of the detector through covers
and existing holes
All components and means of adjustment and access to mounting screws, which, when interfered with, could
adversely affect the operation of the detector, shall be located within the detector housing. Such access shall
require the use of an appropriate tool and depending on the grade as specified in Table 4 shall generate a
tamper signal or message before access can be gained.
It shall not be possible to gain access without generating a tamper signal or message or causing visible
damage.
4.5.2 Detection of removal from the mounting surface
A tamper signal or message shall be generated if the detector is removed from its mounting surface, in
accordance with Table 4.
4.5.3 Detection of masking
Means shall be provided to detect inhibition of the operation of the detector by masking according to the
requirements of Table 4. Alternatively, the detector shall continue to operate normally.
NOTE 1 In an I&HAS, any masked detectors should prevent setting of the system.
The maximum response time for the masking detection device shall be 180 s. Masking shall be signalled
according to the requirements of Table 2. The signals or messages shall remain for at least as long as the
masking condition is present. A masking signal or message shall not be reset while the masking condition is
still present. Alternatively the masking signal or message shall be generated again within 180 s of being
reset if the masking condition is still present.
NOTE 2 From a system design point of view, it would be preferable for masked detectors to automatically reset after the masking
condition is removed.
For detectors where detection of masking may be remotely disabled, the detection of masking shall operate
when the I&HAS is unset; it is not required to operate when the I&HAS is set.

4.5.4 Immunity to magnetic field interference
It shall not be possible to inhibit any signals or messages with a magnet of grade dependence according to
Table 4. The magnet types shall be as described in Annex D.
4.5.5 Resistance to, or detection of, re-orientation
When the torque given in Table 4 has been applied to the detector and then removed, the detector shall be
within 5° of its original orientation. Alternatively, when the torque given in Table 4 is applied, a tamper signal
or message shall be generated before the detector has rotated by 5°.
4.6 Electrical requirements
These requirements do not apply to detectors having type C power supplies. For these detectors refer to
EN 50131-6. For detectors having an external power supply, the requirements appear in Table 5.
Table 5 – Electrical requirements
Test Grade 1 Grade 2 Grade 3 Grade 4
Detector current consumption Required Required Required Required
Input voltage range Required Required Required Required
Slow input voltage rise Not Required Required Required Required
Input voltage ripple Not required Required Required Required
Input voltage step change Not required Required Required Required

4.6.1 Detector current consumption
The detector's quiescent and maximum current consumption shall not exceed the figures claimed by the
manufacturer at the nominal input voltage.
4.6.2 Slow input voltage rise and voltage range limits
The detector shall meet all functional requirements when the input voltage lies between ± 25 % of the
nominal value or between the manufacturers range limits if greater. When the supply voltage is raised slowly,
the detector shall function normally at the specified range limits.
4.6.3 Input voltage ripple
The detector shall meet all functional requirements during the sinusoidal variation of the input voltage by
± 10 % of nominal, at a frequency of 100 Hz.
4.6.4 Input voltage step change
No signals or messages shall be caused by a step in the input voltage between maximum or minimum and
nominal values of the input voltage.
4.7 Environmental classification and conditions
4.7.1 Environmental classification
The environmental classification is described in EN 50131-1 and shall be specified by the manufacturer.
4.7.2 Immunity to environmental conditions
Detectors shall meet the requirements of the environmental tests described in Tables 7 and 8.
These tests shall be performed in accordance with EN 50130-5 and EN 50130-4.

– 13 – CLC/TS 50131-2-7-1:2009
Impact tests shall not be carried out on delicate detector components such as LEDs or microphones.
Unless specified otherwise for operational tests, the detector shall not generate unintentional intrusion,
tamper, fault or other signals or messages when subjected to the specified range of environmental
conditions.
For endurance tests, the detector shall continue to meet the requirements of this standard after being
subjected to the specified range of environmental conditions.
5 Marking, identification and documentation
5.1 Marking and/or identification
Marking and/or identification shall be applied to the product in accordance with the requirements of
EN 50131-1.
5.2 Documentation
The product shall be accompanied with clear and concise documentation conforming to the main systems
document EN 50131-1. The documentation shall additionally state the following:
a) a list of all options, functions, inputs, signals or messages, indications and their relevant characteristics;
b) any disallowed field adjustable control settings or combinations of these;
c) where alignment adjustments are provided, these shall be labelled as to their function;
d) the manufacturer’s quoted nominal operating voltage and the maximum and quiescent current
consumption at that voltage;
e) the manufacturer’s diagram of the detector and its claimed detection boundary showing top and side
elevations at a height specified by the manufacturer, superimposed upon a scaled 2 m squared grid. The
size of the grid shall be directly related to the size of the claimed detection boundary.
f) all types, minimum size, minimum and maximum thickness of glass for which the detector is claimed to
detect;
g) any restrictions according to the mounting location of the detector or any other restrictions which apply to
the performance of the detector;
h) a warning to the user not to obscure partially or completely the detector's field of view with large objects
such as furniture, curtains, blinds, if required;
i) any specific settings needed to meet the requirements of this specification at the claimed grade.
6 Testing
The tests are intended to be primarily concerned with verifying the correct operation of the detector to the
specification provided by the manufacturer. All the test parameters specified shall carry a general tolerance
of ± 10 % unless otherwise stated, for acoustic measurements a general tolerance of ± 3 dB is applicable.
A list of tests appears as a general test matrix in Annex H.
6.1 General test conditions
6.1.1 Standard laboratory conditions for testing
The general atmospheric conditions in the measurement and tests laboratory shall be those specified in
EN 60068-1:1994, 5.3.1, unless stated otherwise.
Temperature 15 °C to 35 °C
Relative humidity 25 % RH to 75 % RH

Air pressure 86 kPa to 106 kPa
Noise level Shall not exceed 65 dB C-weighted (alternatively 70 dB linear) in the frequency range
of 12,5 kHz to 16 kHz; time averaging has to be set to fast (0,125 s) when measuring
6.1.2 General detection testing environment and procedures
Manufacturer’s documented instructions regarding mounting and operation shall be read and applied to all
tests.
6.1.2.1 Testing environment
For passive acoustic glass break detectors, the detection tests require an enclosed, unobstructed and
draught-free area having a length at least 25 % larger in the long dimension and at least half that length in
the short dimension than the manufacturers claimed range. See Annex A for a description of a potential test
room. The minimum sized standardized glass types (glass window or door glass pane as defined in
Annex B) needs to be in a fixed off centre position in both directions (horizontal and vertical) in a fixed solid
wall e.g. brick, block or concrete.
The fixed off centre means the mounting position of the window, whereas the minimum distance of the
window centre is between 28 % and 37 % of the length of the mounted wall from either side of the wall.
The detectors shall be mounted in the as-used position on a wall or ceiling at the height specified by the
manufacturer.
Testing the maximum detection range of a passive acoustic glass break detector can be performed by
installing a detector in the maximum distance position on a wall or ceiling, whereas the maximum distance
will be measured as in the corresponding test section described.
Alternatively to the wall or ceiling, it can be installed on a free standing rig, whereas the installation position
has to be in the horizontal centre of a 1,20 m wide, 2,40 m high and 18 mm thick laminated wooden plate.
The free standing rig has to be setup in opposite and parallel position to the monitored object.
Testing the minimum detection range of a passive acoustic glass break detector can be performed by
installing a detector in the minimum distance position on a wall, ceiling or close by the monitored object,
whereas the minimum distance will be measured as in the corresponding test section described.
The test room shall comply with the RT60 definition (see 3.1.18).
6.1.2.2 Test procedures
The tests will be performed with the types of glass claimed by the manufacturer. These tests will be
performed with the sizes and thicknesses of glass specified in Annex B.
Additionally, tests will be performed with the minimum size claimed by the manufacturer, if it is smaller than
the minimum size specified in Annex B.
Additionally, tests will be performed with the thinnest glass claimed by the manufacturer, if it is thinner than
the minimum thickness specified in Annex B.
The detector shall be connected to the nominal supply voltage and connected to the monitoring system that
is appropriate to the test. The detector shall be allowed to stabilise for 180 s. The intrusion signal or message
output shall be monitored. If multiple sensitivity modes are available, any non-compliant modes shall be
identified by the manufacturer. All compliant modes shall be tested.

– 15 – CLC/TS 50131-2-7-1:2009
6.2 Basic detection test
The purpose of the basic detection test is to verify that a detector is still operational after a test or tests
has/have been carried out. The basic detection verifies only the qualitative performance of the detector. The
basic detection test is performed using the BTS.
6.2.1 Basic test source
For functional verification there shall be a device available which will simulate a glass breakage or
destruction, without breaking the glass (BTS), alternatively a pane of standard sized glass (see Annex B) can
be broken to verify the detection. The Basic Test Source (BTS) which is specified by the manufacturer
simulates the breaking of a standard glass window by the low energy attack test.
The available test device shall be based on recorded glass break sounds, from or recommended by the
manufacturer. This device should be a glass break simulator which ensures reliable locating and testing of
passive acoustic glass break detectors. The passive acoustic glass break simulator should generate plate or
tempered glass sound samples.
6.2.2 Basic detection test method
The detector shall generate an intrusion signal or message when a test device (BTS) is used to simulate a
glass breakage. The test will be performed according to the manufacturer’s instructions after the first
installation, to verify, that all detectors are installed properly. It will be performed again, after or / and during
the environmental tests under the same conditions the tests had been performed the first time, to verify that
the detectors will still function the way, the manufacturer claims to support (e.g. detection range) and to
compare this results with the results of the initial test.
If the test is not compatible with the detector, use the manufacturer’s information to generate the correct
algorithm.
The detector(s) shall produce an intrusion signal or message when exposed to an alarm stimulus both before
and after being subjected to any test that may adversely affect its performance.
6.3 Performance tests
The general test conditions of 6.1.2 shall apply to all tests in this series.
Detection performance shall be tested against the manufacturer’s documented claims. Any variable controls
shall be set to the values recommended by the manufacturer to achieve the claimed performance.
The detectors shall be assessed in the specified test environment.
6.3.1 Verification of detection performance
All performance tests shall use the sound of breakage of the size, thickness and types of glass claimed to be
supported by the manufacturer including the standard glass types listed in Annex B, if claimed to be
supported by the manufacturer:
- Minimum thickness and minimum size
For each glass type claimed to be supported, two panes of the minimum thickness and minimum size
according to the manufacturer will be tested by dropping a steel ball according to the test set up of
Annex J. Nine detectors shall be used to measure the detection performance.
Pass/Fail criteria: At least 16 out of 18 attempts shall be detected for each glass type. No single detector
shall miss more than one time.
- Maximum thickness and minimum size
For each glass type claimed to be supported, two panes of the maximum thickness and minimum size
according to the manufacturer will be tested by dropping a steel ball according to the test set up of
Annex J. Nine detectors shall be used to measure the detection performance.

Pass/Fail criteria: At least 16 out of 18 attempts shall be detected for each glass type. No single detector
shall miss more than one time.
- Standard sized glass per glass type as specified in Annex B
For each glass type claimed to be supported according to the manufacturer, two panes within the range
between the minimum and maximum standard thickness and standard size will be tested by dropping a
steel ball according to the test set up of Annex J. Nine detectors shall be used to measure the detection
performance.
Pass/Fail criteria: At least 16 out of 18 attempts shall be detected for each glass type. No single detector
shall miss more than one time.
Nine detectors shall be mounted at different positions according to the installation instructions of the
manufacturer. If ceiling mounting is supported, one of the 9 detectors shall be mounted on the ceiling
according the installation instructions of the manufacturer.
One of the detectors shall be mounted at the maximum distance claimed to be supported. The maximum
distance is measured from the farthest point of the monitored glass to the detectors case. The detector shall
be installed on any position of a wall or ceiling if claimed to be supported by the manufacturer, alternatively
on a free standing rig according to 6.1.2.1. If the room is larger than the supported maximum range of the
detector, it is allowed to install one or more detector(s) on an adjacent wall to the window in maximum
distance to the monitored glass.
One of the detectors shall be mounted at the minimum distance claimed to be supported. The minimum
distance is measured from the nearest point of the monitored glass to the detectors case. The detector shall
be installed on any position of a frame, wall or ceiling if claimed to be supported by the manufacturer.
Four detectors shall be mounted along the boundary of the coverage range claimed to be supported by the
manufacturer on randomly chosen positions.
6.3.2 Hole drilling with a diamond hole saw
This test will be performed according to the grading listed in Table 3.
The drilling of a hole using a diamond hole saw will be performed. It will be verified, if the detector is able to
identify and signal the change of the integrity of the monitored side of the glass pane. Three detectors will be
mounted according to the installation instructions of the manufacturer. A diamond hole saw with a diameter
of 20 mm (± 1 mm) will be used to drill a hole into the glass pane opposite to the monitored side. This will be
performed once in the most distant position to the detector and four times on randomly chosen positions
within the coverage range claimed to be supported by the manufacturer.
Pass/Fail criteria: The test is passed successfully, if the detector(s) has/have indicated the change of the
integrity of the glass pane for the most distant position and detected at least three out of the four attempts on
the randomly chosen positions. In case the cha
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