1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsWB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1Electrical apparatus for thedetection of combustible gasesin domestic premises Part 1: Test methods and performan
2、ce requirementsBS EN 50194-1:2009National forewordThis British Standard is the UK implementation of EN 50194-1:2009. It supersedes BS EN 50194:2000 which is withdrawn.The UK participation in its preparation was entrusted by Technical CommitteeGEL/31, Equipment for explosive atmospheres, to Subcommit
3、tee GEL/31/19,Gas detectors.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2009ISBN 978 0 580 61606 8ICS 13
4、.320; 29.260.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 April 2009Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 501
5、94-1:2009EUROPEAN STANDARD EN 50194-1 NORME EUROPENNE EUROPISCHE NORM January 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: avenue Marnix 17, B - 1000 Brussels
6、 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50194-1:2009 E ICS 13.320 Supersedes EN 50194:2000English version Electrical apparatus for the detection of combustible gases in domestic premises - Part 1: Test methods and pe
7、rformance requirements Matriels lectriques pour la dtection des gaz combustibles dans les locaux usage domestique - Partie 1: Mthodes dessai et exigences daptitude la fonction Elektrische Gerte fr die Detektion von brennbaren Gasen in Wohnhusern - Teil 1: Prfverfahren und Anforderungen an das Betrie
8、bsverhalten This European Standard was approved by CENELEC on 2008-09-01. 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 bibl
9、iographical 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 responsibili
10、ty 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, Greec
11、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 50194-1:2009EN 50194-1:2009 - 2 - Foreword This European Standard was prepared by the Technical
12、Committee CENELEC TC 216, Gas detectors. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50194-1 on 2008-09-01. This European Standard supersedes EN 50194:2000. The following dates were fixed: latest date by which the EN has to be implemented
13、at national level by publication of an identical national standard or by endorsement (dop) 2009-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-09-01 _ BS EN 50194-1:2009- 3 - EN 50194-1:2009 Contents 1 Scope . 4 2 Normative references 4 3 De
14、finitions 5 4 General requirements 6 4.1 General . 6 4.2 Construction . 7 4.3 Indicators and alarms . 7 4.4 Fault signals . 8 4.5 Output signal (applicable for Type A apparatus only) 8 4.6 Labelling and instructions . 8 5 Test and performance requirements . 10 5.1 General requirements for tests. 10
15、5.2 Normal conditions for tests . 11 5.3 Test methods and performance requirements . 12 6 Self-contained battery powered apparatus 16 6.1 Battery fault warning . 16 6.2 Battery capacity 17 6.3 Battery reversal 17 6.4 Battery connections 18 Annex A (informative) Location of the gas detection apparatu
16、s - Guide for writing the instruction booklet 20 Annex B (informative) Emergency actions - Guide for writing the instruction booklet . 21 Annex C (informative) A-deviations . 22 Figure 1 Sound level test 19 Table 1 Construction requirements 8 BS EN 50194-1:2009EN 50194-1:2009 - 4 - 1 Scope This Euro
17、pean Standard specifies general requirements for the construction, testing and performance of electrically operated apparatus for the detection of combustible gases, designed for continuous operation in a fixed installation in domestic premises. The apparatus may be mains or battery powered. Additio
18、nal requirements for apparatus to be used in recreational vehicles and similar premises are specified in EN 50194-2. NOTE 1 For caravan holiday homes EN 50194-1 applies. This European Standard specifies two types of apparatus to operate in the event of an escape of town gas, natural gas or liquefied
19、 petroleum gas (LPG): - Type A apparatus - to provide a visual and audible alarm and an executive action in the form of an output signal that may actuate directly or indirectly a shut-off device and/or other ancillary device; - Type B apparatus - to provide a visual and audible alarm only. This Euro
20、pean Standard excludes apparatus for the detection of toxic hazards of gases such as carbon monoxide (see EN 50291-1 and EN 50291-2). Apparatus complying with this standard is not considered suitable for industrial or commercial installations for which EN 60079-29-1 apply. NOTE 2 Apparatus tested in
21、 accordance with EN 60079-29-1 will not necessarily comply with this European Standard. 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 o
22、f the referenced document (including any amendments) applies. EN 437 1993 Appliances using combustible gases - Test gases, test pressure and categories of appliances EN 1775 2007 Gas supply - Gas pipework for buildings - Maximum operating pressure less than or equal to 5 bar - Functional recommendat
23、ions EN 50244 2000 Electrical apparatus for the detection of combustible gases in domestic premises - Guide on the selection, installation, use and maintenance EN 50270 2006 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or ox
24、ygen EN 50291 2001 Electrical apparatus for the detection of carbon monoxide in domestic premises - Test methods and performance requirements EN 60079-29-1 2007 Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases (IEC 60079-29-1:2007, modified
25、) EN 60335-1 2002Household and similar electrical appliances - Safety - Part 1: General requirements (IEC 60335-1:2001, modified) EN 60529 1991 Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN 60704-1 1997 Household and similar electrical appliances - Test code for the dete
26、rmination of airborne acoustical noise - Part 1: General requirements (IEC 60704-1:1997) BS EN 50194-1:2009- 5 - EN 50194-1:2009 3 Definitions For the purposes of this European Standard the following definitions apply: 3.1 ambient air the normal atmosphere surrounding the apparatus 3.2 clean air air
27、 which is free from combustible gases, interfering and contaminating substances 3.3 domestic premises any house or building being the place of residence or home of a household, family or person 3.4 fixed installation an apparatus which is intended to have all parts except replaceable batteries perma
28、nently installed 3.5 latching alarm an alarm which, once activated, requires deliberate action for resetting 3.6 lower explosive limit (LEL) the volume ratio of flammable gas or vapour in air below which an explosive gas atmosphere will not be formed NOTE Annex A of EN 61779-1:2000 gives a list of f
29、lammability levels which are the internationally agreed basis for the type testing of devices. National regulations may use differing values for the LEL of some substances (for example the values for methane and propane, which were specified in older European Standards). 3.7 sensor an assembly in wh
30、ich the sensing element is housed and which may contain associated circuit components 3.8 sensing element a device, the output of which will change in the presence of combustible gas 3.9 volume ratio (v/v) ratio of the volume of a component to the volume of the gas mixture 3.10 output signal signal
31、characterized by a standby state and an activated state by which action may be initiated (for example, triggering of a shut-off device) 3.11 alarm set point a fixed setting of the apparatus that determines the volume ratio of combustible gas at which the apparatus will automatically initiate an alar
32、m and for Type A apparatus, an output signal BS EN 50194-1:2009EN 50194-1:2009 - 6 - 3.12 gas detection apparatus apparatus comprising the sensor, remote sensor if applicable, alarm and other circuit components, power supply and for Type A apparatus a means of providing an output signal 3.13 fault s
33、ignal a visual or audible signal indicating a faulty or failed apparatus 3.14 LPG butane, propane or mixtures thereof 3.15 mains powered apparatus an apparatus designed to be powered by the domestic mains electrical supply, with or without additional power source 3.16 self contained battery powered
34、apparatus apparatus provided with an internal battery to provide the necessary amount of energy for a predefined duration of operation 3.17 warm-up time the time interval between the time when the apparatus is switched on and the time when the apparatus is fully operational 3.18 continuous operation
35、 apparatus which is continuously powered with continuous or intermittent automatic sensing 3.19 recreational vehicle recreational vehicles considered by this standard include recreational craft, caravans and motor caravans NOTE Other motorised vehicles like trucks are known to have residential accom
36、modation. They are not recreational vehicles but are considered as similar premises in respect of this standard. 3.20 caravan holiday home transportable leisure accommodation vehicle that does not meet requirements for construction and use of road vehicles, that retains means for mobility and that i
37、s for temporary or seasonal occupation from EN 13878 4 General requirements 4.1 General Unless otherwise stated, the requirements specified are applicable to both Type A and Type B apparatus. The apparatus shall reliably detect the presence of combustible gas in domestic premises under the stated ap
38、plication conditions, shall produce an alarm, and in the case of Type A apparatus, shall be able to initiate executive actions whenever the level exceeds a preset alarm volume ratio. BS EN 50194-1:2009- 7 - EN 50194-1:2009 The apparatus, electrical assemblies and components shall comply with the con
39、struction requirements of 4.2 to 4.6 and the test and performance requirements of Clause 5. Apparatus shall be designed for fixed installation and continuous operation. The apparatus shall not be class 0 as defined in EN 60335-1:2002, 3.3.7. When replaceable, the sensor as defined under 3.7 shall gu
40、arantee the same constructional characteristics and functions as the previous sensor without modifying the internal detector in such a way as to keep unchanged the compliance of the detector to all the requirements of this standard. The above condition shall be verified using the information and the
41、 documentation given by the manufacturer of the detector. All text on the apparatus, its packaging and in the instruction booklet shall be in accordance with National regulations. 4.2 Construction The apparatus shall comply with the appropriate requirements of EN 60335-1:2002 as listed in Table 1. T
42、able 1 - Construction requirements Constructional requirement EN 60335-1:2002 Clause Protection against accessibility to live parts 8 Heating Relevant parts of 11 Leakage current and electrical strength at operating temperature 13 Moisture resistance 15.1 and 15.3 Leakage current and electrical stre
43、ngth 16 Overload protection of transformers and associated circuits 17 Abnormal operation 19 Construction 22 Internal wiring 23 Components 24.1, 24.2 and 24.4 Supply connection and external flexible cords 25.3 Terminals for external conductors 26 Provision for earthing 27 Screws and connections 28 C
44、reepage distances, clearances and distances through insulation 29 Resistance to heat and fire 30 Resistance to rusting 31 In addition, when the sensor is replaceable: Mechanical and/or electrical means shall guarantee the replacement of the sensor without errors. In the case of electrical recognitio
45、n of the incorrect connection or the absence of the sensor, the detector shall automatically signal a fault and/or alarm. Moreover it shall be impossible, or recognised as an error, to connect a sensor designed for a certain type of gas to a detector designed for a different type of gas. 4.3 Indicat
46、ors and alarms 4.3.1 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 indication shall be yellow. BS EN 50194-1:2009EN 50194-1:2009 - 8 - If a sensor “end-of-lif
47、e” visual indication is fitted, this shall be clearly different from all other visual indications. The visual indicators shall be labelled to show their function. The visual indicators shall be visible when the apparatus is installed in its operating position according to the manufacturers instructi
48、ons. 4.3.2 The apparatus shall have an audible alarm, see 5.3.16. 4.3.3 Visual indicators and audible alarms, shall operate at a volume ratio above 3 % LEL and below 20 % LEL of the gas to be monitored. The alarms shall remain in operation at gas volume ratios above that alarm set point. NOTE A latc
49、hing alarm may be used to accomplish the requirements of this clause. The manufacturer shall declare the alarm set point of the apparatus. When measured as specified in 5.3.4.2, the alarm shall operate within 2,5 % LEL of the declared value. For all tests thereafter, the alarm set point shall be within 5 % LEL of the declared value but within the overall band of above 3 % LEL and not exceeding 20 % LEL. 4.3.4 No adjustment shall be possible from outside of the apparatus without breaking or removing seals placed there to prev
