SIST EN 50291:2002
(Main)Electrical apparatus for the detection of carbon monoxide in domestic premises - Test methods and performance requirements
Electrical apparatus for the detection of carbon monoxide in domestic premises - Test methods and performance requirements
This European Standard specifies general requirements for the construction, testing and performance of electrically operated carbon monoxide gas detection apparatus, designed for continuous operation in domestic premises. The apparatus may be mains or battery powered. Such apparatus is intended to warn of an accumulation of CO, enabling the occupant to react before being exposed to significant risk. This standard specifies two types of apparatus, these are:
Type A - to provide a visual and audible alarm and an executive action in the form of an
output signal that can be used to actuate directly or indirectly a ventilation or other
ancillary device.
Type B - to provide a visual and audible alarm only.
This standard excludes apparatus:
for the detection of combustible gases, other than carbon monoxide itself; (see EN 50194:2000);
for the detection of CO in industrial installations or commercial premises; (see EN 45544series);
for use in boats, caravans or mobile homes;
for CO measurement for smoke and fire detection (see prEN 12239).
Elektrische Geräte für die Detektion von Kohlenmonoxid in Wohnhäusern - Prüfverfahren und Anforderungen an das Betriebsverhalten
Appareils électriques pour la détection de monoxyde de carbone dans les locaux à usage domestique - Méthodes d'essais et prescriptions de performances
Electrical apparatus for the detection of carbon monoxide in domestic premises – Test methods and performance requirements
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Electrical apparatus for the detection of carbon monoxide in domestic premises – Test methods and performance requirementsElektrische Geräte für die Detektion von Kohlenmonoxid in Wohnhäusern - Prüfverfahren und Anforderungen an das BetriebsverhaltenAppareils électriques pour la détection de monoxyde de carbone dans les locaux à usage domestique - Méthodes d'essais et prescriptions de performancesElectrical apparatus for the detection of carbon monoxide in domestic premises - Test methods and performance requirements13.320Alarmni in opozorilni sistemiAlarm and warning systemsICS:Ta slovenski standard je istoveten z:EN 50291:2001SIST EN 50291:2002en01-april-2002SIST EN 50291:2002SLOVENSKI
STANDARD
SIST EN 50291:2002
EUROPEAN STANDARDEN 50291NORME EUROPÉENNEEUROPÄISCHE NORMAugust 2001CENELECEuropean Committee for Electrotechnical StandardizationComité Européen de Normalisation ElectrotechniqueEuropäisches Komitee für Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B - 1050 Brussels© 2001 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 50291:2001 EICS 13.320English versionElectrical apparatus for the detection of carbon monoxidein domestic premises -Test methods and performance requirementsAppareils électriques pour la détectionde monoxyde de carbone dans leslocaux à usage domestique -Méthodes d'essais et prescriptionsde performancesElektrische Geräte für die Detektionvon Kohlenmonoxid in Wohnhäusern -Prüfverfahren und Anforderungen andas BetriebsverhaltenThis European Standard was approved by CENELEC on 2000-08-01. CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member.This European Standard exists in three official versions (English, French, German). A version in anyother language made by translation under the responsibility of a CENELEC member into its ownlanguage and notified to the Central Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,Portugal, Spain, Sweden, Switzerland and United Kingdom.SIST EN 50291:2002
EN 50291:2001- 2 -ForewordThis European Standard has been prepared by the Technical Committee CENELEC TC 216, Gasdetectors.The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50291 on2000-08-01.The following dates were fixed:-latest date by which the EN has to be implementedat national level by publication of an identicalnational standard or by endorsement(dop)2002-02-01-latest date by which the national standards conflictingwith the EN have to be withdrawn(dow)2006-04-01Annexes designated "normative" are part of the body of the standard.Annexes designated "informative" are given for information only.In this standard, annexes A and B are informative.___________SIST EN 50291:2002
- 3 - EN 50291:2001Contents1Scope.42Normative references.43Definitions.54General requirements.64.1General.64.2Construction.64.3Indicators and alarms.74.4Fault signals.84.5Output signal (applicable for type A apparatus only).84.6Labelling and instructions.85Test and performance requirements.95.1General requirements for tests.95.2Normal conditions for tests.105.3Test methods and performance requirements.116Self-contained battery powered apparatus.176.1Battery fault warning.176.2Battery capacity.176.3Battery reversal.186.4Battery connections.18Annex A
(informative)
Health effects.19Annex B (informative)
A-deviations.21SIST EN 50291:2002
EN 50291:2001- 4 -1 ScopeThis European Standard specifies general requirements for the construction, testing andperformance of electrically operated carbon monoxide gas detection apparatus, designed forcontinuous operation in domestic premises. The apparatus may be mains or battery powered.Such apparatus is intended to warn of an accumulation of CO, enabling the occupant to reactbefore being exposed to significant risk.This standard specifies two types of apparatus, these are:Type A - to provide a visual and audible alarm and an executive action in the form of anoutput signal that can be used to actuate directly or indirectly a ventilation or otherancillary device.Type B - to provide a visual and audible alarm only.This standard excludes apparatus:− for the detection of combustible gases, other than carbon monoxide itself; (seeEN 50194:2000);− for the detection of CO in industrial installations or commercial premises; (see EN 45544series);− for use in boats, caravans or mobile homes;− for CO measurement for smoke and fire detection (see prEN 12239).2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this European Standard only when incorporated in it by amendment or revision. For undatedreferences the latest edition of the publication referred to applies.EN 502701999Electromagnetic compatibility - Electrical apparatus for thedetection and measurement of combustible gases, toxic gases oroxygenEN 502922001Electrical apparatus for the detection of carbon monoxide indomestic premises – Guide on the selection, installation, use andmaintenanceEN 60335-11994Safety of household and similar electrical appliancesPart 1: General requirements (IEC 60335-1:1991, mod.)EN 605291991Degrees of protection provided by enclosures (IP code)(IEC 60529:1989)EN 60704-11997Household and similar electrical appliances - Test code for thedetermination of airborne acoustical noisePart 1: General requirements (IEC 60407-1:1997)SIST EN 50291:2002
- 5 - EN 50291:20013 DefinitionsFor the purposes of this European Standard the following definitions apply:3.1ambient airthe normal atmosphere surrounding the apparatus3.2clean airair which is free of carbon monoxide, interfering and contaminating substances3.3domestic premisesany house or building being a place of residence or home of a household, family or person3.4fixed installationan apparatus which is intended to have all parts except replaceable batteries permanentlyinstalled3.5latching alarman alarm which, once activated, requires deliberate action for resetting3.6sensoran assembly in which the sensing element is housed and which may contain associated circuitcomponents3.7sensing elementa device, the output of which will change in the presence of carbon monoxide3.8volume ratio (V/V)ratio of the volume of a component to the volume of the gas mixture3.9output signala signal characterised by a standby and an activation state by which action may be initiated,e.g. triggering a ventilation device3.10warm-up timethe time interval between the time when the apparatus is switched on and the time when theapparatus is fully operational3.11alarm set pointa fixed setting of the apparatus that determines the volume ratio and duration of exposure atwhich the apparatus will automatically initiate an alarm and, for type A apparatus an outputsignalSIST EN 50291:2002
EN 50291:2001- 6 -3.12fault signala visual and/or audible signal indicating a faulty or failed apparatus3.13mains-powered apparatusan apparatus designed to be powered by the normal domestic mains electrical supply, with orwithout an alternative power source3.14battery-powered apparatusan apparatus designed to be powered by batteries only3.15continuous operationapparatus which is continuously powered with continuous or intermittent automatic sensing4 General requirements4.1 GeneralUnless otherwise stated, the requirements specified are applicable to both type A and type Bapparatus.The apparatus shall reliably detect the presence of carbon monoxide in domestic premisesunder the stated application conditions, shall produce an alarm, and in the case of Type Aapparatus, shall be able to initiate executive actions whenever the conditions (in terms of both level andduration) exceed pre-set alarm set points.Apparatus which includes functionality additional to carbon monoxide detection shall performaccording to the requirements of this standard and to the requirements of any standardsrelevant to the additional functionality.The apparatus, electrical assemblies and components shall comply with the requirements of4.2 to 4.6 and the performance requirements of clause 5. Apparatus shall be designed forcontinuous operation.
The apparatus shall not be class 0 as defined in EN 60335-1.4.2 ConstructionThe apparatus shall comply with the appropriate requirements of EN 60335-1 as listed in Table 1.SIST EN 50291:2002
- 7 - EN 50291:2001Table 1 - Construction requirementsConstructional requirementEN 60335-1:1994 clauseProtection against accessibility to live parts8Heatingrelevant parts of 11Leakage current and electrical strength at operating temperature13Moisture resistance15.1 and 15.3Leakage current and electrical strength16Overload protection of transformers and associated circuits17Abnormal operation19Construction22Internal wiring23Components24.1,24.2, 24.4, 24.5Supply connection and external flexible cords25.3Terminals for external conductors26Provision for earthing27Screws and connections28Creepage distances, clearances and distances through insulation29Resistance to heat, fire and tracking30Resistance to rusting314.3 Indicators and alarms4.3.1 Visual indicators shall be fitted and coloured as follows:a) power supply indicators shall be coloured green;b) alarm indicators shall be coloured red;c) where fitted, the visual fault alarm shall be yellow.The indicators shall be marked to show their function.The indicators shall be visible when the apparatus is installed in its operating position according to themanufacturer’s instructions.4.3.2 The apparatus shall have an audible alarm, see 5.3.16.4.3.3 Alarm indicators and audible alarms shall operate simultaneously at the set points aslisted in Table 2.Table 2 - Alarm conditionsCO ConcentrationNo alarm beforeAlarm before30 ppm120 minutes-50 ppm60 minutes90 minutes100 ppm10 minutes40 minutes300 ppm-3 minutesOnce activated, the alarm shall remain in operation at carbon monoxide concentrations above50 ppm.NOTE
A latching alarm may be used to accomplish the requirements of this clause.SIST EN 50291:2002
EN 50291:2001- 8 -4.3.4 All adjustment devices and tools intended for adjustment of, or access to, suchadjustment devices shall be designed so as to discourage unauthorised interference with theapparatus.4.4 Fault signalsThe apparatus shall provide a fault signal in the event of loss of continuity or short circuit to the sensor.The fault signal shall be clearly identified and different from a gas alarm.4.5 Output signal (applicable for type A apparatus only)The apparatus shall provide an output signal at each of the alarm conditions listed in Table 2.4.6 Labelling and instructions4.6.1 GeneralAll text on the apparatus, its packaging and in the instruction book shall be in accordance withNational regulations.4.6.2 LabellingThe apparatus shall carry durable label(s) carrying the following information:a)The manufacturer's or supplier's name, trademark or other means of identification;b)The name of apparatus, model number, if any, and the type of gas to be detected;c)The number of this European standard;d)The type of apparatus, A or B;e)The serial number or manufacturing date code of the apparatus;f)For mains powered apparatus the electricity supply voltage and frequency andmaximum power consumption;g)For battery powered apparatus the type and size of replacement batteries;h)Recommendations on the replacement procedures and lifetime of the apparatus.The markings b) and h) shall be clearly visible with the apparatus in a typical installedposition.The markings shall be legible and shall comply with 7.6 and 7.14 of EN 60335-1:1994.4.6.3 CautionsAll gas detection apparatus shall carry a caution, on a label attached to the apparatus, for example:CAUTION: READ THESE INSTRUCTIONS CAREFULLY BEFORE OPERATING OR SERVICING.4.6.4 Instruction bookletThe apparatus shall be provided with an instruction booklet or leaflet. The instruction book orleaflet shall give complete, clear and accurate instructions for the installation, safe and properoperation, and regular checking of the apparatus. It shall include at least the followinginformation:a)For mains powered apparatus, the correct operating voltage, frequency, fuse-rating (ifany) and method of connection to the mains supply system;SIST EN 50291:2002
- 9 - EN 50291:2001b)For battery powered apparatus the type and size of replacement batteries, normaloperating life, battery replacement instructions, and information on low batteryconditions;c)Guidance on siting and mounting of the apparatus and the warning that the apparatusshould be installed by a competent person, see, EN 50292;d)Actions to take if the apparatus alarms, see EN 50292;e)An explanation of all warning (visual and audible) and other indicators, including re-setting facilities where relevant;f)A list of commonly occurring materials, vapours or gases, e.g. in cleaning fluids,polishes, paints, cooking operations, etc., which may affect the reliability of theapparatus in the short or long term;g)Warning of the possible hazards of electric shock or malfunction if the apparatus istampered with;h)Instructions on the use of any relevant test procedure supplied with the apparatus;i)The expected lifetime of the apparatus;j)For type A apparatus, instructions on the use and characteristics of the output signal;k)A note stating the working ranges of both temperature and humidity;l)The alarm conditions;m)A description of the effects of carbon monoxide on the human body, stating that theapparatus may not prevent the chronic effects of carbon monoxide exposure, and thatthe apparatus will not fully safeguard individuals at special risk, see annex A ofEN 50292;n)Warning that installation of the apparatus should not be used as a substitute for properinstallation, use and maintenance of fuel burning appliances including appropriateventilation and exhaust systems.4.6.5 PackagingThe apparatus packaging shall:− Carry a warning that the apparatus should be installed by a competent person;− Carry relevant information regarding storage and transport.The package shall clearly display the following message:This apparatus is designed to protect individuals fromthe acute effects of carbon monoxide exposure. It willnot fully safeguard individuals with specific medicalconditions. If in doubt consult a medical practitioner.5 Test and performance requirements5.1 General requirements for tests5.1.1 Test samplesFor the purposes of type testing:− Compliance with 4.2 and 5.3.15 to 5.3.18 shall be verified using samples as required.These samples should not be used for subsequent tests unless agreed by themanufacturer;− Three samples shall be subjected to the tests specified in 5.3.2 to 5.3.13 and for batterypowered apparatus, clause 6.
All three samples shall pass the tests;SIST EN 50291:2002
EN 50291:2001- 10 -− Three further samples may be used for the long term stability test 5.3.14 (at themanufacturer’s discretion). All three samples shall pass the test.5.1.2 Preparation of samplesThe sample apparatus shall be prepared and mounted when applicable, in accordance with themanufacturer's instructions without modification.The entire apparatus shall be subjected to the test conditions.5.1.3 Use of mask for testingThe use of a mask is allowed for subjecting the apparatus to test gases. The design and operation of themask used by the testing laboratory, in particular, the gas pressure and velocity inside the mask shall notinfluence the response of the apparatus or the results obtained. The manufacturer may provide a suitablemask with the apparatus.5.1.4 Test chamberThe construction of the chamber shall be such as to ensure that the apparatus is exposed to a specificvolume ratio of test gas in a reproducible manner.5.2 Normal conditions for tests5.2.1 GeneralThe test conditions specified in 5.2.2 to 5.2.9 shall be used for all tests unless otherwise specified.Before commencing any test sequence, the apparatus shall be allowed to warm-up for a minimum periodof 1 h except for 5.3.5.5.2.2 Test gases for alarm testingThe following CO test gas volume ratios shall be used for alarm testing as described in 5.3.1.Table 3 - Alarm conditions with test gasesTest gas referenceCO volume ratioTest gas volume ratioNo alarm beforeAlarm beforeA30 ppm33 ppm ±3 ppm120 minutes-B50 ppm55 ppm ±5 ppm60 minutes90 minutesC100 ppm110 ppm ±10 ppm10 minutes40 minutesD300 ppm330 ppm ±30 ppm-3 minutes5.2.3 Test gases for specified testsFor the long term stability test, 5.3.14, the mixture of CO in air shall have a volume ratio of10 ppm ± 5 ppm.For the high volume ratio test, 5.3.6, the mixture of CO in air shall have a volume ratio of5 000 ppm ± 100 ppm.5.2.4 Speed of test gasThe speed of air or test gas in the test chamber shall be between 0,1 m/s and 0,5 m/s.
In the case of amask, the requirements of 5.1.3 apply.SIST EN 50291:2002
- 11 - EN 50291:20015.2.5 Power supplyFor mains powered apparatus, the electricity supply shall be within ± 2 % of the nominal value declaredby the manufacturer.5.2.6 TemperatureThe tests shall be performed using air and test gases of constant temperature ± 2 ºC within the range15 ºC to 25 ºC throughout the duration of each test.5.2.7 HumidityThe tests shall be performed using air and test gases of constant relative humidity (r.h.) ± 10 % r.h.within the range 30 % r.h. to 70 % r.h. throughout the duration of each test.5.2.8 PressureThe tests shall be performed using air and test gases at ambient pressure ± 2 kPa within the range of86 kPa to 108 kPa throughout the duration of the test.5.2.9 Removable partsOptional filters, windshields, or diffusion devices supplied or recommended by the manufacturer shall beattached or removed according to which condition gives the most unfavourable result for the test beingconducted.5.3 Test methods and performance requirements5.3.1 GeneralThe apparatus shall comply with all the requirements under the specified test conditions. Unlessotherwise stated, each test condition shall be separately varied while the others remain normal asdefined in 5.2.When the apparatus is switched on, a warm-u
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