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BS EN 50131-2-4:2020

BS EN 50131-2-4:2020

$198.66

Alarm systems. Intrusion and hold-up systems – Requirements for combined passive infrared and microwave detectors

Published By Publication Date Number of Pages
BSI 2020 58
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This document is for combined passive infrared and microwave 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 document does not include requirements for detectors intended for use outdoors.

The purpose of the detector is to detect the broad spectrum infrared radiation emitted by an intruder, to emit microwave signals and analyse the signals that are returned and to provide the necessary range of signals or messages to be used by the rest of the intrusion alarm system.

For a combined detector where both detection technologies need to be in their activated state in order to generate an alarm condition, the grade-dependent requirements of this document apply. For combined detectors which can be configured or operated such that each detection technology can generate an alarm condition independently, the grade-dependant requirements as defined in EN 50131-2-2 and EN 50131-2-3 apply, when configured accordingly. Otherwise, it is the responsibility of the manufacturer to clearly state that the detector does not comply to this document and not to EN 50131-2-2 and EN 50131-2-3 when put into such a configuration.

It is essential that a detector fulfils all the requirements of the specified grade.

Functions additional to the mandatory functions specified in this document can be included in the detector, providing they do not influence the correct operation of the mandatory functions.

Requirements for system interconnections are not included in this document.

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
2 Normative references
10 3 Terms, definitions and abbreviations
3.1 Terms and definitions
11 3.2 Abbreviations
4 Functional requirements
4.1 Event Processing
12 4.2 Detection
4.2.1 Detection performance
13 4.2.2 Indication of detection
14 4.3 Operational requirements
4.3.1 Time interval between intrusion signals or messages
4.3.2 Switch on delay
4.3.3 Self-tests
4.3.3.1 General
4.3.3.2 Local Self-Test
4.3.3.3 Remote Self-Test
4.4 Immunity of the individual technologies to incorrect operation
4.4.1 General
4.4.2 Immunity to turbulent warm air flow
4.4.3 Immunity to visible & near infrared radiation
4.4.4 Immunity to microwave signal interference by fluorescent lights
15 4.5 Tamper security
4.5.1 General
4.5.2 Resistance to and detection of unauthorised access to components and means of adjustment
4.5.3 Detection of removal from the mounting surface
4.5.4 Resistance to, or detection of, re-orientation
4.5.5 Immunity to magnetic field interference
4.5.6 Detection of masking
16 4.6 Electrical requirements
4.6.1 General
4.6.2 Detector current consumption
4.6.3 Slow input voltage change and voltage range limits
4.6.4 Input voltage ripple
4.6.5 Input voltage step change
4.7 Environmental classification and conditions
4.7.1 Environmental classification
17 4.7.2 Immunity to environmental conditions
5 Marking, identification and documentation
5.1 Marking and/or identification
5.2 Documentation
6 Testing
6.1 General
18 6.2 General test conditions
6.2.1 Standard conditions for testing
6.2.2 General detection testing environment and procedures
6.2.3 Testing environment
6.2.4 Mounting height
6.2.5 Standard walk test target
6.2.5.1 General
19 6.2.5.2 Standard walk test target temperature
6.2.5.3 Standard walk test target temperature differential
6.2.6 Testing procedures
6.3 Basic detection test
6.3.1 General
6.3.2 Basic detection targets (BDT)
20 6.3.3 Basic Detection Test procedure
6.4 Walk testing
6.4.1 General walk test method
6.4.2 Verification of detection performance
21 6.4.3 Detection across and within the detection boundary
6.4.3.1 General
6.4.3.2 Verify detection across the boundary for detectors with coverage angles less than or equal to 180°
6.4.3.3 Verify detection across the boundary for detectors with a coverage angle of greater than 180°
22 6.4.3.4 Verify detection within the boundary for detectors with coverage angles less than or equal to 180°
6.4.3.5 Verify detection within the boundary for detectors with coverage angle of greater than 180°
6.4.4 Verify the high-velocity detection performance for detectors with a coverage angle less than or equal to 180°
23 6.4.5 Verify the high-velocity detection performance for detectors with a coverage angle of greater than 180°
6.4.6 Verify the intermittent movement detection performance for detectors with a coverage angle less than or equal to 180°
6.4.7 Verify the intermittent movement detection performance for detectors with a coverage angle of greater than 180°
24 6.4.8 Verify the close-in detection performance for detectors with a coverage angle less than or equal to 180°
6.4.9 Detection of radial movement for detectors with a coverage angle of greater than 180°
6.5 Switch-on delay, time interval between signals and indication of detection
25 6.6 Self-tests
6.6.1 General
6.6.2 Application of the fault conditions
6.6.3 Local self-test procedure
26 6.6.4 Remote self-test procedure
6.7 Immunity of individual technologies to incorrect operation
6.7.1 Immunity to turbulent warm air flow
6.7.2 Immunity to visible & near infrared radiation
27 6.7.3 Immunity to microwave signal interference by fluorescent lights
6.8 Tamper security
6.8.1 Resistance to and detection of unauthorised access to the inside of the detector through covers and existing holes
6.8.2 Detection of removal from the mounting surface
28 6.8.3 Resistance to re-orientation of adjustable mountings
6.8.4 Immunity to magnetic field interference.
6.8.5 Detection of detector masking
29 6.8.6 Immunity to False Masking Signals
30 6.9 Electrical tests
6.9.1 General
6.9.2 Detector current consumption
6.9.3 Slow input voltage change and input voltage range limits
6.9.4 Input voltage ripple
6.9.5 Input voltage step change
31 6.9.6 Total loss of power supply
6.10 Environmental classification and conditions
32 6.11 Marking, identification and documentation
6.11.1 Marking and/or identification
6.11.2 Documentation
33 Annex A (normative)Dimensions & requirements of the standardized test magnets
A.1 Introduction
A.2 Requirements
36 Annex B (normative)General testing matrix
38 Annex C (normative)Walk test diagrams
46 Annex D (normative)Procedure for calculation of the average temperature difference between the standard target and the background
D.1 Measurement and calculation of the real average temperature difference between the SWT and the background
D.2 Adjustment of equivalent average temperature difference between the SWT and the background
47 Annex E (informative)Basic detection target for the basic test of detection capability
48 Annex F (informative)Equipment for walk test velocity control
F.1 General
F.2 Moving light source guiding system
F.3 Metronome
49 Annex G (informative)Immunity to visible and near Infrared radiation – Notes on calibration of the light source
50 Annex H (informative)Immunity to microwave signal interference by fluorescent lights
51 Annex I (informative)Example list of small tools
52 Annex J (informative)Test for resistance to re-orientation of adjustable mountings
54 Annex K (informative)Delta-T film adjustment Lookup table
55 Annex L (informative)Immunity to turbulent warm air flow

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BS EN 50131-2-4:2020
$198.66