EN 50131-2-2:2008

SLOVENSKI STANDARD
01-julij-2008
1DGRPHãþD
SIST-TS CLC/TS 50131-2-2:2005
$ODUPQLVLVWHPL6LVWHPL]DMDYOMDQMHYORPDLQURSDGHO-DYOMDOQLNLYORPD
3DVLYQLLQIUDUGHþLMDYOMDOQLNL
Alarm systems - Intrusion and hold-up systems -- Part 2-2: Intrusion detectors - Passive
infrared detectors
Alarmanlagen - Einbruch- und Überfallmeldeanlagen -- Teil 2-2: Einbruchmelder - Passiv
-Infrarotmelder
Systémes d'alarme - Systémes d'alarme contre l’intrusion et les hold-up -- Partie 2-2:
Détecteurs d'intrusion - Détecteurs à infrarouges passifs
Ta slovenski standard je istoveten z: EN 50131-2-2:2008
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.

EUROPEAN STANDARD
EN 50131-2-2
NORME EUROPÉENNE
January 2008
EUROPÄISCHE NORM
ICS 13.310 Supersedes CLC/TS 50131-2-2:2004

English version
Alarm systems -
Intrusion and hold-up systems -
Part 2-2: Intrusion detectors -
Passive infrared detectors
Systèmes d'alarme -  Alarmanlagen -
Systèmes d'alarme contre l’intrusion Einbruch- und Überfallmeldeanlagen -
et les hold-up - Teil 2-2: Einbruchmelder -
Partie 2-2: Détecteurs d'intrusion - Passiv-Infrarotmelder
Détecteurs à infrarouges passifs

This European Standard was approved by CENELEC on 2007-12-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

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: rue de Stassart 35, B - 1050 Brussels

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50131-2-2:2008 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 79, Alarm systems.
The text of the daft was submitted to the Unique Acceptance Procedure and was approved by
CENELEC as EN 50131-2-2 on 2007-12-01.
This European Standard supersedes CLC/TS 50131-2-2:2004.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-12-01

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 Intrusion detectors – Microwave detectors
Part 2–4 Intrusion detectors – Combined passive infrared / Microwave detectors
Part 2–5 Intrusion detectors – Combined passive infrared / Ultrasonic detectors
Part 2–6 Intrusion detectors – 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 devices
- 3 - EN 50131-2-2:2008
Contents
Introduction. 5
1 Scope. 6
2 Normative references . 6
3 Definitions and abbreviations . 6
3.1 Definitions. 6
3.2 Abbreviations. 7
4 Functional requirements . 7
4.1 Event Processing. 7
4.2 Detection . 8
4.3 Operational requirements.10
4.4 Immunity to incorrect operation .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 Walk testing.15
6.4 Switch-on delay, time interval between signals and indication of detection.17
6.5 Self tests.17
6.6 Immunity to incorrect operation .18
6.7 Tamper security.18
6.8 Electrical tests.20
6.9 Environmental classification and conditions.21
6.10 Marking, identification and documentation.23
Annexes
Annex A (normative) Dimensions & requirements of the standardised test magnets.24
Annex B (normative) General Testing Matrix .27
Annex C (informative) Walk Test Diagrams.29
Annex D (normative) Procedure for calculation of average temperature difference.32
Annex E (informative) Basic detection target for the basic test of detection capability .33
Annex F (informative) Equipment for walk test velocity control .34
Annex G (informative) Immunity to visible and near infrared radiation -
Notes on calibration of the light source .35
Annex H (informative) Example list of small tools .36
Annex I (informative) Test for resistance to re-orientation of adjustable mountings.37

Figures
Figure A.1 – Test magnet - Magnet Type 1.25
Figure A.2 – Test magnet - Magnet Type 2.26
Figure C.1– Detection across the boundary .29
Figure C.2 – Detection within the boundary .29
Figure C.3 – High velocity and intermittent movement .30
Figure C.4 – Close–in detection.30
Figure C.5 – Significant range reduction.31
Figure I.1 – Re–orientation test.37
Tables
Table 1 – Events to be processed by grade. 7
Table 2 – Generation of Signals or Messages. 8
Table 3 – General walk test velocity and attitude requirements. 9
Table 4 – Tamper security requirements.11
Table 5 – Electrical requirements .12
Table 6 – Range of materials for masking tests .20
Table 7 – Operational tests.22
Table 8 – Endurance tests.22

- 5 - EN 50131-2-2:2008
Introduction
This European Standard deals with passive infrared detectors (to be referred to as the detector), used
as part of intrusion alarm systems installed in buildings. It includes four security grades and four
environmental classes.
The purpose of a detector is to detect the broad spectrum infrared radiation emitted by an intruder and
to provide the necessary range of signals or messages to be used by the rest of the intrusion alarm
system.
The number and scope of these signals or messages will be more comprehensive for systems that are
specified at the higher grades.
This European Standard is only concerned with the requirements and tests for the detector. Other
types of detector are covered by other documents identified as in EN 50131-2 series.

1 Scope
This European Standard is for passive infrared 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 European Standard does not include
requirements for passive infra red 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 influence the correct operation of the mandatory functions.
This European Standard 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 systems – Part 6: Power supplies
EN 60068-1 Environmental testing – Part 1: General and guidance (IEC 60068-1)
EN 60068-2-52 Environmental testing – Part 2: Tests – Test Kb: Salt mist, cyclic
(sodium chloride solution) (IEC 60068-2-52)
EN 60529 Degrees of protection provided by enclosures (IP code) (IEC 60529)
3 Definitions and abbreviations
For the purposes of this European Standard, the following definitions and abbreviations apply in
addition to those given in EN 50131-1.
3.1 Definitions
3.1.1
basic detection target
heat source designed to verify the operation of a detector

3.1.2
incorrect operation
physical condition that causes an inappropriate signal or message from a detector

3.1.3
masking
interference with the detector input capability by the introduction of a physical barrier such as metal,
plastics, paper or sprayed paints or lacquers in close proximity to the detector

3.1.4
passive infrared detector
detector of the broad-spectrum infrared radiation emitted by a human being

- 7 - EN 50131-2-2:2008
3.1.5
simulated walk test target
non-human heat source designed to simulate the standard walk test target

3.1.6
standard walk test target
human being of standard weight and height clothed in close fitting clothing appropriate to the
simulation of an intruder
3.1.7
walk test
operational test during which a detector is stimulated by the standard walk test target in a controlled
environment
3.1.8
walk test attitude, crawling
crawling attitude shall consist of the standard walk test target moving with hands and knees in contact
with the floor
3.1.9
walk test attitude, upright
upright attitude shall consist of the standard walk test target standing and walking with arms by the
sides of the body. The standard walk test target begins and ends a traverse with feet together
3.2 Abbreviations
HDPE High Density PolyEthylene
PIR Passive InfraRed
EMC ElectroMagnetic Compatibility
SWT Standard Walk-test Target
BDT Basic Detection Target
FOV
Field Of View
4 Functional requirements
4.1 Event Processing
Detectors shall process the events shown in Table 1.
Table 1 — Events to be processed by grade
Grade
Event
1 2 3 4
Intrusion detection M M M M
Tamper detection Op M M M
Masking detection Op Op M M
Significant reduction of range Op Op Op 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
M = mandatory
Op = optional
Detectors shall generate signals or messages as shown in Table 2.

Table 2 — Generation of Signals or Messages
Signals or Messages
Event
Intrusion Tamper Fault
No event NP NP NP
Intrusion M NP NP
Tamper NP M NP
a
Masking M Op M
a
M Op M
Significant reduction of range
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
M = mandatory
NP = not permitted
Op = optional
a
An independent signal or message may be provided instead.
NOTE 1  This permits two methods of signalling a masking or reduction of range event: either
by the intrusion signal and fault signal, or by a dedicated masking or reduction of range 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 Detection
4.2.1 Detection performance
The detector shall generate an intrusion signal or message when the standard or simulated walk-test
target moves at velocities and attitudes specified in Table 3. For detection across the boundary the
walk-test distance shall be 1,5 m either side of the boundary. For detection within the boundary the
walk-test distance shall be 3,0 m.

- 9 - EN 50131-2-2:2008
Table 3 — General walk test velocity and attitude requirements
Test Grade 1 Grade 2 Grade 3 Grade 4
Detection across the boundary
Required Required Required Required
-1 -1 -1 -1
Velocity 1,0 ms 1,0 ms 1,0 ms 1,0 ms
Attitude Upright Upright Upright Upright
Detection within the boundary
Required Required Required Required
-1 -1 -1 -1
Velocity 0,3 ms 0,3 ms 0,2 ms 0,1 ms
Attitude Upright Upright Upright Upright
Detection at high velocity
Not required Required Required Required
-1 -1 -1
Velocity N/A 2,0 ms 2,5 ms 3,0 ms
Attitude N/A Upright Upright Upright
Close-in detection performance
Required Required Required Required
Distance 2,0 m 2,0 m 0,5 m 0,5 m
-1 -1 -1 -1
Velocity 0,5 ms 0,4 ms 0,3 ms 0,2 ms
Attitude Upright Upright Crawling Crawling
Intermittent movement detection
Not required Not required Required Required
a
performance
-1 -1
Velocity N/A N/A 1,0 ms 1,0 ms
Attitude N/A N/A Upright Upright
Significant reduction of specified
Not required Not required Not required Required
b
range
-1
Velocity N/A N/A N/A 1,0 ms
Attitude N/A N/A N/A Upright
a
For grade 3 and 4 detectors, the intermittent movement shall consist of the SWT walking 1 m at a velocity of 1,0 ms-1 then
pausing for 5 s before continuing. The sequence shall be maintained until the SWT has traversed through the entire
detection area. This constitutes one walk test. The test shall be repeated in each of the directions shown in Figure C.3.
b
The means to detect a significant reduction in range may be met either by detectors having the appropriate function (4.2.3)
or by suitable system design. Two or more devices (eg a detector in conjunction with a camera, active transmitter or
additional detector), may cooperate and interconnect with the system to provide means to detect a significant reduction of
range.
4.2.2 Indication of detection
An indicator shall be provided at the detector to indicate when an intrusion signal or message has
been generated. At grades 1 and 2 this indicator shall be capable of being enabled and disabled either
remotely at Access Level 2 and/or locally after removal of cover which provides tamper detection as
described in Tables 1 and 4. At grades 3 and 4 this indicator shall be capable of being enabled and
disabled remotely at Access Level 2.
4.2.3 Significant reduction of range
Grade 4 detectors shall detect significant reduction of range or coverage area due, for example, to
deliberate or accidental introduction of objects or obstructions into the coverage area.
Range reduction along the principal axis of detection of more than 50 % shall generate a signal or
message within 180 s, according to the requirements of Table 2 and Table 3.
If additional equipment is required to detect significant reduction of range, reference shall be made to
this equipment and its operation in the manufacturer’s documentation.

4.3 Operational requirements
4.3.1 Time interval between intrusion signals or messages
Detectors using wired interconnections 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.
Detectors using wire free interconnections 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
4.3.2 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.
4.3.3 Self tests
4.3.3.1 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.
4.3.3.2 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
4.4 Immunity to incorrect operation
The detector shall be considered to have sufficient immunity to incorrect operation if the following
requirements have been met. No intrusion signal or message shall be generated during the tests.
4.4.1 Immunity to air flow
The detector shall not generate any signal or message when air is blown over the face of the detector.
4.4.2 Immunity to visible and near infrared radiation
The detector shall not generate any signal or message when a car headlamp is swept across the front
window or lens through two panes of glass.
4.5 Tamper security
Tamper security requirements for each grade of detector are shown in Table 4.
4.5.1 Resistance to and detection of unauthorised access to components and means of
adjustment
All components, 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 such 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.
- 11 - EN 50131-2-2:2008
4.5.3 Resistance to, or detection of, re-orientation
When the torque given in Table 4 is applied to the detector it shall not rotate more than 5°.
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°.
4.5.4 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 A.
4.5.5 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.
NOTE 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 From a system design point of view it would be preferable for masked detectors to automatically reset after the masking
condition is removed.
-1
No masking signal or message shall be generated by normal human movement at 1 ms at a distance
equal to or greater than 1 m.
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.
Table 4 — Tamper security requirements
Requirement Grade 1 Grade 2 Grade 3 Grade 4
Resistance to access to the inside of the
Required Required Required Required
detector
Detection of access to the inside of the
Not Required Required Required Required
detector
Removal from the mounting surface wired
Not required Not Required Required Required
detectors
Removal from the mounting surface
Not required Required Required Required
wirefree detectors
Resistance to, or detection of,
re-orientation - for detectors mounted on Not required Required Required Required
brackets only
Applied torque 2 Nm 5 Nm 10 Nm
Magnetic field immunity Not required Required Required Required
Magnet type defined in Annex A Type 1 Type 2 Type 2
Masking detection Not required Not required Required Required

4.6 Electrical requirements
The grade dependencies appear in Table 5. These requirements do not apply to detectors having
internal Type C power supplies. For these detectors refer to EN 50131-6.
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 change 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 manufacturer’s stated values 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 nominal and maximum
and between nominal and minimum.
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.
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.
Impact tests shall not be carried out on delicate detector components such as LEDs, optical windows
or lenses.
For endurance tests, the detector shall continue to meet the requirements of this standard after being
subjected to the specified range of environmental conditions.

- 13 - EN 50131-2-2:2008
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
a) a list of all options, functions, inputs, signals or messages, indications and their relevant
characteristics;
b) the manufacturer’s diagram of the detector and its claimed detection boundary showing top and
side elevations at 2,0 m mounting height or 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;
c) the recommended mounting height, and the effect of changes to it on the claimed detection
boundary;
d) the effect of adjustable controls on the detector’s performance or on the claimed detection
boundary including at least the minimum and maximum settings;
e) any disallowed field adjustable control settings or combinations of these;
f) any specific settings needed to meet the requirements of this European Standard at the claimed
grade;
g) where alignment adjustments are provided, these shall be labelled as to their function;
h) a warning to the user not to obscure partially or completely the detector’s field of view;
i) the manufacturer’s quoted nominal operating voltage, and the maximum and quiescent current
consumption at that voltage;
j) any special requirements needed for detecting a 50 % reduction in range, where provided.
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. A list of tests appears as a general test matrix in
Annex B.
6.1 General test conditions
6.1.1 Standard conditions for testing
The general atmospheric conditions in the measurement and tests laboratory shall be those specified
in EN 60068-1, 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
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.
6.1.3 Testing environment
The detection tests require an enclosed, unobstructed and draught-free area that enables testing of
the manufacturer’s claimed coverage pattern.
The test area walls and floor shall have a recommended emissivity of at least 80 % between 8 µm and
14 µm wavelength, at least directly behind the SWT.
The temperature of the background surface immediately behind the SWT shall be in the range 15 °C
to 25 °C, and shall be horizontally uniform over that area to ± 2 °C. Over the whole background area it
shall be measured at ten points spread evenly throughout the coverage pattern. The average
background temperature is the linear average of the ten points.
The default mounting height shall be 2,0 m unless otherwise specified by the manufacturer.
Annex C provides example diagrams for the range of walk tests for one format of detection pattern.
Many others are possible.
6.1.4 Standard walk test target
The SWT shall have the physical dimensions of 1,60 m to 1,85 m in height, shall weigh 70 kg ± 10 kg
and shall wear close-fitting clothing having a recommended emissivity of at least 80 % between 8 µm
and 14 µm wavelength.
Temperatures shall be measured at the following five points on the front of the body of the SWT:
1. Head
2. Chest
3. Back of hand
4. Knee
5. Feet
Temperatures shall be measured using a non-contact thermometer or equivalent equipment,
The temperature differential at each body point is measured, then weighted and averaged as detailed
in D.1.
There shall be a means of calibration and control of the desired velocity at which the SWT is required
to move.
NOTE The use of a simulator/robot in place of the SWT is permitted, provided that it meets the specification of the SWT with
regard to temperature. It is known as the simulated target. In case of conflict, a human walk test shall be the primary reference.
6.1.4.1 Standard walk test target temperature differential
The walk tests shall be performed either with an average temperature differential Dt (as calculated in
r
D.1) of 3,5 °C ± 20 %, or if the temperature differential is larger than 3,5 °C + 20 % (4,2 °C), it may be
adjusted to achieve an equivalent temperature differential Dte within this range by one of the means
specified in D.2.
is less than 3,5 °C – 20 % (2,8 °C), no valid test is possible.
If Dt
r
If Dt is between 2,8 °C and 4,2 °C, no adjustment is required.
r
6.1.5 Testing procedures
The detector shall be mounted at a height of 2,0 m unless otherwise specified by the manufacturer.
The orientation shall be as specified by the manufacturer with unobstructed view of the walk test to be
performed. The detector shall be connected to the nominal supply voltage, and connected to
equipment with a means of monitoring intrusion signals or messages. The detector shall be allowed to
stabilise for 180 s. If multiple sensitivity modes such as pulse counting are available, any non-
compliant modes shall be identified by the manufacturer. All compliant modes shall be tested.

- 15 - EN 50131-2-2:2008
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 test verifies only the qualitative performance of a
detector. The basic detection test is performed using the BDT.
6.2.1 Basic detection target (BDT)
The BDT consists of a heat source equivalent to the human hand that can be moved across the field
of view of the detector. An informative description is given in Annex E. The temperature of the source
shall be between 3,5 °C and 10,0 °C above the background.
A close-in walk test may be carried out as an alternative to using the BDT.
6.2.2 Basic test of detection capability
A stimulus that is similar to that produced by the SWT is applied to the detector, using the BDT. Move
the BDT perpendicularly across the centre line of the detection field at a distance of not more than
1 m, and at a height where the manufacturer claims detection will occur.
-1 -1
Move the BDT a distance of 1 m at a velocity of 0,5 ms to 1,0 ms . The detector 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 Walk testing
6.3.1 General walk test method
Walk testing is accomplished by the controlled movement of a SWT across the field of view of the
detector. The grade dependent velocities and attitudes to be used by the SWT are specified in
Table 3. The tolerance of these velocities shall be better than ± 10 %. The SWT begins and ends a
walk with feet together. Annex F is an informative description of two systems that may be used to
control and monitor the desired velocity.
6.3.2 Verification of detection performance
The general test conditions of 6.1.1, 6.1.2 and 6.1.3 shall apply to all tests in this series.
Detection performance shall be tested against the manufacturer’s documented claims. Example walk
test diagrams are shown in Annex C.
Any variable controls shall be set to the values recommended by the manufacturer to achieve the
claimed performance.
PIR detectors of all types shall be assessed in the specified test environment.
If the dimensions of the detection pattern exceed the available test space, it may be tested in sections
rather than as a whole.
The SWT or a suitable simulated target, with its temperature difference with the background adjusted
according to Annex D shall be used. Grade dependent velocities and attitudes are specified in
Table 3.
6.3.3 Detection across and within the detection boundary
The tests assess detection of intruders moving within and across the boundaries of the detection area.
The diagrams in Annex C show an example of the detection boundary superimposed where
appropriate upon a scaled 2 m squared grid. A variety of boundary formats is possible and can be
tested.
6.3.3.1 Verify detection across the boundary
Figure C.1 shows an example of a manufacturer’s claimed detection boundary.
Place test points at 2 m intervals around the boundary of the detection pattern, starting from the
detector, and finishing where the boundary crosses the detector axis. Repeat for the opposite side of
the detection pattern. If the gap between the final point on each side is greater than 2 m, place a test
point where the boundary crosses the detector axis. For grade 1 detectors it is only necessary to test
alternate test points.
Each test point is connected to the detector by a radial line. At each test point, two test directions into
the detection coverage pattern are available at + 45° and – 45° to the radial line. Both directions shall
be tested beginning at a distance of 1,5 m from the test point, and finish 1,5 m after it.
A walk test is a walk in one direction through a test point. Before commencing and after completing
each walk test the SWT shall stand still for at least 20 s.
A walk test that generates an intrusion signal or message is a passed walk test. Alternatively if the first
walk test attempt does not generate an intrusion signal or message then four further attempts shall be
carried out. All of these further attempts shall generate an intrusion signal or message to constitute a
passed walk test.
Pass/Fail criteria: There shall be a passed walk test in both directions for every test point.
6.3.3.2 Verify detection within the boundary
Figure C.2 shows an example of a manufacturer’s claimed detection boundary superimposed upon a
scaled 2 m squared grid.
Starting at the detector, place the first test point at 4 m along the detector axis. Using the 2 m squared
grid, place further test points at every alternate grid intersection, on both sides of the detector axis. No
test point shall be less than 1 m from, or lie outside, the claimed boundary.
Each test point is connected to the detector by a radial line. At each test point, two test directions are
available, at + 45° and – 45° to the radial line. Both directions shall be tested beginning at a distance
of 1,5 m from the test point, and finish 1,5 m after it.
A walk test is a walk in one direction through a test point. Before commencing and after completing
each walk test the SWT shall stand still for at least 20 s.
A walk test that generates an intrusion signal or message is a passed walk test. Alternatively if the first
walk test attempt does not generate an intrusion signal or message then four further attempts shall be
carried out. All of these further attempts shall generate an intrusion signal or message to constitute a
passed walk test.
Pass/Fail criteria: There shall be a passed walk test in both directions for every test point.
6.3.4 Verify the high-velocity detection performance
Four walk tests are performed. Two walk tests begin outside the boundary of the area, from opposite
sides, and pass through the detector axis mid-range point at + 45° and – 45° to the detector axis,
moving towards the detector. The third and fourth walk tests pass in opposite directions at right angles
to the detector axis at a distance of 2 m in front of, and parallel to the detector reference line.
Examples are shown in Figure C.3.
The SWT shall cross all of the specified detection area, coming to rest after clearing the other
detection boundary. Before commencing and after completing each walk test the SWT shall stand still
for at least 20 s.
Pass/Fail criteria: An intrusion signal or message shall be generated for each of the three walk tests.
6.3.5 Verify the intermittent movement detection performance
Two walk tests are performed, crossing the entire detection area. Before commencing and after
completing each walk test the SWT shall stand still for at least 20 s.
The tests begin outside the detection boundary, from opposite sides, and pass through the detector
axis mid-range point at + 45° and – 45° to the detector axis, moving towards the detector.
For grades 3 and 4 detectors the intermittent movement shall consist of the SWT walking 1 m at a
-1
velocity of 1,0 ms , then pausing for 5 s before continuing. The sequence shall be maintained until the
SWT has traversed the entire detection area.
Pass/Fail criteria: An intrusion signal or message shall be generated for both walk tests.

- 17 - EN 50131-2-2:2008
6.3.6 Verify the close-in detection performance
Two walk tests are performed beginning and ending outside the boundary of the detection area as
detailed in Figure C.4. The tests begin outside the detection boundary with the centre of the SWT at a
distance (for grades 1 and 2) of 2,0 m ± 0,2 m from, and (for grades 3 and 4) of 0,5 m ± 0,05 m from
the vertical axis of the detector.
The SWT shall cross all of the specified detection area, coming to rest after clearing the other
detection boundary. Before commencing and after completing each walk test the SWT shall stand still
for at least 20 s.
Pass/Fail criteria: An intrusion signal or message shall be generated for both walk tests.
6.3.7 Verify the significant reduction of specified range
Select a test point on the detector axis at a distance of 55 % of the manufacturer’s claimed detection
range. Erect a barrier which blocks infrared radiation across the axis and perpendicular to it, at a
distance of 45 % of the manufacturer’s claimed detection range, covering a horizontal distance of
± 2,5 m on either side of the detector axis, and a vertical height of 3 m as detailed in Figure C.5.
At the test point, two test directions are used, beginning at a distance of 1,5 m before the test point,
and finishing 1,5 m after it, moving perpendicularly to the detector axis.
The SWT shall move along each path from start to finish. At the end of each walk test, the SWT shall
pause for at least 20 s before carrying out any further test.
Pass/Fail criteria: A masking signal or message shall be generated when the barrier is present.
6.4 Switch-on delay, time interval between signals and indication of detection
Switch on the detector power with the indicator enabled and allow 180 s for stabilisation. Carry out the
basic detection test. Note the response. After the specified time inte
...