SIST EN 50131-2-3:2009
Alarm systems - Intrusion and hold-up systems -- Part 2-3: Requirements for microwave detectors
Alarm systems - Intrusion and hold-up systems -- Part 2-3: Requirements for microwave detectors
This European Standard is for 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 standard does not include requirements for microwave 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. The standard does not apply to system interconnections.
Alarmanlagen - Einbruch- und Überfallmeldeanlagen -- Teil 2-3: Anforderungen an Mikrowellenmelder
Diese Europäische Norm gilt für in Gebäude installierte Mikrowellenmelder und beschreibt die Sicherheitsgrade 1 bis 4 (siehe EN 50131-1), exklusiv oder nicht exklusiv verdrahtete oder drahtlose Melder und deckt die Umweltklassen I bis IV ab (siehe EN 50130-5). Diese Europäische Norm enthält keine Anforderungen an Melder, die für die Verwendung im Freien vorgesehen sind. Ein Melder muss alle Anforderungen des festgelegten Grades erfüllen. Zusätzlich zu den in dieser Europäischen Norm verbindlich festgelegten Funktionen darf ein Melder über weitere Funktionen verfügen, sofern diese nicht den ordnungsgemäßen Betrieb der verbindlichen Funktionen des Melders beinträchtigen. Diese Europäische Norm wird nicht auf Verbindungen zwischen Anlageteilen angewandt.
Systèmes d’alarme - Systèmes d'alarme contre l’intrusion et les hold-up -- Partie 2-3: Exigences pour détecteurs à hyperfréquences
La présente Norme Européenne concerne les détecteurs à hyperfréquences installés dans les immeubles et est prévue pour les grades de sécurité 1 à 4 (voir la EN 50131-1), les détecteurs filaires spécifiques ou non spécifiques ou non filaires, et l’utilisation des classes d’environnement I à IV (voir la EN 50130-5). La présente norme ne comprend pas d’exigences pour les détecteurs à hyperfréquences destinés à une utilisation à l’extérieur. Un détecteur doit satisfaire à toutes les exigences du grade spécifié. Des fonctions complémentaires aux fonctions obligatoires spécifiées dans la présente norme peuvent être incluses dans le détecteur, à condition qu’elles n’influent pas sur le bon déroulement des fonctions obligatoires. Cette norme ne s’applique pas aux matériels d’interconnexion.
Alarmni sistemi - Sistemi za javljanje vloma in ropa - 2-3. del: Zahteve za mikrovalovne javljalnike
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Alarmni sistemi - Sistemi za javljanje vloma in ropa - 2-3. del: Zahteve za mikrovalovne javljalnikeAlarmanlagen - Einbruch- und Überfallmeldeanlagen -- Teil 2-3: Anforderungen an MikrowellenmelderSystèmes d’alarme - Systèmes d'alarme contre l’intrusion et les hold-up -- Partie 2-3: Exigences pour détecteurs à hyperfréquencesAlarm systems - Intrusion and hold-up systems -- Part 2-3: Requirements for microwave detectors13.320Alarmni in opozorilni sistemiAlarm and warning systems13.310Varstvo pred kriminalomProtection against crimeICS:Ta slovenski standard je istoveten z:EN 50131-2-3:2008SIST EN 50131-2-3:2009en,fr,de01-januar-2009SIST EN 50131-2-3:2009SLOVENSKI
STANDARDSIST-TS CLC/TS 50131-2-3:20051DGRPHãþD
SIST EN 50131-2-3:2009
EUROPEAN STANDARD EN 50131-2-3 NORME EUROPÉENNE
EUROPÄISCHE NORM September 2008
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 50131-2-3:2008 E
ICS 13.320 Supersedes CLC/TS 50131-2-3:2004
English version
Alarm systems -
Intrusion and hold-up systems -
Part 2-3: Requirements for microwave detectors
Systèmes d’alarme -
Systèmes d'alarme contre l’intrusion
et les hold-up -
Partie 2-3: Exigences pour détecteurs
à hyperfréquences
Alarmanlagen -
Einbruch- und Überfallmeldeanlagen -
Teil 2-3: Anforderungen
an Mikrowellenmelder
This European Standard was approved by CENELEC on 2008-05-01. 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.
SIST EN 50131-2-3:2009
EN 50131-2-3:2008 – 2 – Foreword This European Standard was prepared by the Technical Committee CENELEC TC 79, Alarm systems.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50131-2-3 on 2008-05-01. This European Standard supersedes CLC/TS 50131-2-3:2004. 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)
2009-05-01 – latest date by which the national standards conflicting with the EN have to be withdrawn
(dow)
2011-05-01
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 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 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
SIST EN 50131-2-3:2009
– 3 – EN 50131-2-3:2008 Contents Page 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 . 9 4.3 Operational requirements . 10 4.4 Immunity to incorrect operation . 10 4.5 Tamper security . 11 4.6 Electrical requirements . 12 4.7 Environmental classification and conditions . 13 5 Marking, identification and documentation . 13 5.1 Marking and/or identification. 13 5.2 Documentation . 13 6 Testing . 14 6.1 General test conditions . 14 6.2 Basic detection test . 15 6.3 Walk testing . 15 6.4 Switch-on delay, time interval between signals and indication of detection . 18 6.5 Self tests . 18 6.6 Immunity to incorrect operation . 18 6.7 Tamper security . 18 6.8 Electrical tests . 20 6.9 Environmental classification and conditions . 22 6.10 Marking, identification and documentation . 23 Annex A (normative)
Dimensions & requirements of the standardised test magnets . 24 Annex B (normative)
General testing matrix . 27 Annex C (informative)
Walk test diagrams . 28 Annex D (informative)
Equipment for walk test velocity control. 31 Annex E (informative)
Immunity to microwave signal interference by fluorescent lights . 32 Annex F (informative)
Example list of small tools . 33 Annex G (normative)
Test for resistance to re-orientation of adjustable mountings . 34 Bibliography . 35
SIST EN 50131-2-3:2009
EN 50131-2-3:2008 – 4 – 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 . 28 Figure C.2 – Detection within the boundary . 28 Figure C.3 – High velocity and intermittent movement . 29 Figure C.4 – Close-in detection . 29 Figure C.5 – Significant range reduction . 30 Figure E.1 – Immunity to fluorescent lamp interference . 32 Figure G.1 – Re-orientation test . 34
Tables Table 1 – Events to be processed by grade . 8 Table 2 – Generation of signals or messages . 8 Table 3 – General walk test velocity and attitude requirements . 9 Table 4 – Tamper security requirements . 12 Table 5 – Electrical requirements . 12 Table 6 – Range of materials for masking tests . 20 Table 7 – Operational tests . 23 Table 8 – Endurance tests . 23
SIST EN 50131-2-3:2009
– 5 – EN 50131-2-3:2008 Introduction This standard deals with microwave 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 emit microwave radiation and analyse returned signals to detect 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 specification is only concerned with the requirements and tests for the detector. Other types of detector are covered by other documents identified as EN 50131-2 series. SIST EN 50131-2-3:2009
EN 50131-2-3:2008 – 6 – 1 Scope This European Standard is for 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 standard does not include requirements for microwave 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. The 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 and hold-up 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) 3 Definitions and abbreviations For the purposes of this document, the following terms and definitions apply in addition to those given in EN 50131-1. 3.1 Definitions 3.1.1
basic detection target microwave reflector 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 SIST EN 50131-2-3:2009
– 7 – EN 50131-2-3:2008 3.1.4
microwave detector detector having an active microwave emitter and receiver installed in the same casing 3.1.5
simulated walk test target non-human or synthetic microwave reflector 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 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. Detectors shall generate signals or messages as shown in Table 2. SIST EN 50131-2-3:2009
EN 50131-2-3:2008 – 8 – Table 1 – Events to be processed by grade Event Grade 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
Table 2 – Generation of signals or messages Event Signals or messages Intrusion Tamper Fault No event NP NP NP Intrusion M NP NP Tamper NP M NP Masking a M Op M Significant reduction of range a M Op M Low supply voltage Op Op M Total loss of power supply b 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 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. NOTE 2 When, in Table 1, an event may optionally generate signals or messages, they shall be as shown in this table. NOTE 3 It is accepted that a bus system may send out dedicated signals or messages and does not necessarily have to follow the mapping of Table 2 provided that all of the required events are signalled. a An independent signal or message may be provided instead. b Alternatively total loss of power supply shall be determined by loss of communication with the detector.
SIST EN 50131-2-3:2009
– 9 – EN 50131-2-3:2008 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. 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 Velocity 1,0 ms-1 1,0 ms-1 1,0 ms-1 1,0 ms-1 Attitude Upright Upright Upright Upright Detection within the boundary Required Required Required Required Velocity 0,3 ms-1 0,3 ms-1 0,2 ms-1 0,1 ms-1 Attitude Upright Upright Upright Upright Detection at high velocity Not required Required Required Required Velocity N/A 2,0 ms-1 2,5 ms-1 3,0 ms-1 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 Velocity 0,5 ms-1 0,4 ms-1 0,3 ms-1 0,2 ms-1 Attitude Upright Upright Crawling Crawling Intermittent movement detection performance a Not required Not required Required Required Velocity N/A N/A 1,0 ms-1 1,0 ms-1 Attitude N/A N/A Upright Upright Significant reduction of specified range b Not required Not required Not required Required Velocity N/A N/A N/A 1,0 ms-1 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 (e.g. 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 a 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. SIST EN 50131-2-3:2009
EN 50131-2-3:2008 – 10 – 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 microwave signal interference by fluorescent lights The detector shall not generate any signals or messages due to the operation of a fluorescent light source mounted nearby. SIST EN 50131-2-3:2009
– 11 – EN 50131-2-3:2008 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. 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. 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. No masking signal or message shall be generated by normal human movement at 1 ms-1 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. SIST EN 50131-2-3:2009
EN 50131-2-3:2008 – 12 – Table 4 – Tamper security requirements Requirement Grade 1 Grade 2 Grade 3 Grade 4 Resistance to access to the inside of the detector Required Required Required Required Detection of access to the inside of the detector Not requiredRequired Required Required Removal from the mounting surface wired detectors Not requiredNot requiredRequired Required Removal from the mounting surface wirefree detectors Not requiredRequired Required Required Resistance to, or detection of, re-orientation – for detectors mounted on brackets only Not requiredRequired Required Required Applied torque
2 Nm 5 Nm 10 Nm Magnetic field immunity Not requiredRequired Required Required Magnet type defined in Annex A
Type 1 Type 2 Type 2 Masking detection Not requiredNot requiredRequired Required
4.6 Electrical requirements The grade dependencies appear in Table 5. These requirements do not apply to detectors having 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 requiredRequired Required Required Input voltage ripple Not requiredRequired Required Required Input voltage step change Not requiredRequired 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. SIST EN 50131-2-3:2009
– 13 – EN 50131-2-3:2008 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. 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, super-imposed 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 specification 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, SIST EN 50131-2-3:2009
EN 50131-2-3:2008 – 14 – 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
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