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1、BRITISH STANDARD BS EN 50054:1991 Incorporating Amendment No. 1 Electrical apparatus for the detection and measurement of combustible gases General requirements and test methods The European Standard EN 50054:1991, with the incorporation of amendment A1:1995, has the status of a British Standard Lic
2、ensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50054:1991 This British Standard was published under the authority of the Standards Board and comes into effect on 31 January 1992 BSI 02-1999 The following BSI references relate to the work
3、 on this standard: Committee reference EEL/29 Draft for comment 88/31618 DC ISBN 0 580 20293 3 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the National Committees of the follow
4、ing countries. AustriaItaly BelgiumLuxembourg DenmarkNetherlands FinlandNorway FrancePortugal GermanySpain GreeceSweden IcelandSwitzerland IrelandUnited Kingdom Amendments issued since publication Amd. No.DateComments 9076June 1996Indicated by a sideline in the margin Licensed Copy: sheffieldun shef
5、fieldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50054:1991 BSI 02-1999i Contents Page Cooperating organizationsInside front cover National foreword ii Foreword2 Text of EN 500547 National appendix NA (informative)32 National appendix NB (informative)32 Licensed Copy
6、: sheffieldun sheffieldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50054:1991 ii BSI 02-1999 National foreword This British Standard has been prepared under the direction of the Electronic Equipment Standards Policy Committee and is the English language version of EN
7、 50054, “Electrical apparatus for the detection and measurement of combustible gases. General requirements and test methods”, including amendment A1:1995. This British Standard supersedes BS 6020-1:1981, which is withdrawn. Annexes designated “normative” are part of the body of the standard. Annexes
8、 designated “informative” are given for information only. National appendices are designated “informative”. Cross-references Details of international standards quoted in this British Standard for which there is an identical or technically equivalent British Standard are given in National appendix NB
9、. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprise
10、s a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 32, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Lice
11、nsed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50054 June 1991 + A1 May 1995 UDC 614.838.14:621.317.7:614.833.4:620.1 Descriptors: Electrical apparatus, explosive atmosphere, detector, measur
12、ing apparatus, flammable gas, combustible gas, safety requirement, test method English version Electrical apparatus for the detection and measurement of combustible gases General requirements and test methods (includes amendment A1:1995) Appareils lectriques de dtection et de mesure des gaz combusti
13、bles Rgles gne ales et mthodes dessais (inclut lamendment A1:1995) Elektrische Gerte fr das Aufspren und die Messung brennbarer Gase Allgemeine Anforderungen und Prfmethoden (enthlt nderung A1:1995) r This European Standard was approved by CENELEC on 10 December 1990, amendment A1 was approved by CE
14、NELEC on 1995-03-06. 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 stand
15、ards 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 noti
16、fied to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland an
17、d United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1991 Copyright reserved to CENELEC members Ref. No. EN 50054:199
18、1 + A1:1995 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50054:1991 BSI 02-1999 2 Foreword This European Standard has been prepared by the CENELEC Subcommittee SC 31-9, Gas detectors. The text of the draft was approved by CENELEC as
19、EN 50054 on 10 December 1990. The following dates were fixed: For products which have complied with the relevant national standard before 1991-12-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 1996-12-01. Foreword to ame
20、ndment A1 This amendment was prepared by SC 31-9, Electrical apparatus for the detection and measurement of combustible gases to be used in industrial and commercial potentially explosive atmospheres, of Technical Committee CENELEC TC 31, Electrical apparatus for explosive atmospheres. The text of t
21、he draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as amendment A1 to EN 50054:1991 on 1995-03-06. The following dates were fixed: For products which have complied with EN 50054:1991 before 1996-03-15, as shown by the manufacturer or by a certification body, this p
22、revious standard may continue to apply for production until 2001-03-15. Contents Page IEC Publications referred to in European Standard EN 50054 4 ISO Standards referred to in European Standard EN 50054 4 European Standards referred to in European Standard EN 50054 4 1Scope7 2Definitions7 3General r
23、equirements10 3.1Introduction10 3.2Construction10 3.2.1General10 3.2.2Indicating devices10 3.2.3Alarm or output functions11 3.2.4Fault signals11 3.2.5Adjustments11 3.2.6Battery-powered apparatus11 3.3Labelling and marking11 3.3.1General11 3.3.2Identification of the calibration gas for Group II appar
24、atus12 3.4Instruction manual12 4Test requirements13 4.1Introduction13 4.2General requirements for tests13 4.2.1Samples and sequence of tests13 4.2.2Preparations of apparatus before testing13 4.2.3Mask for calibrations and tests14 4.3Normal conditions for test14 4.3.1General14 4.3.2Test gases14 4.3.3
25、Standard test gas14 4.3.4Flow rate for test gases14 4.3.5Voltage14 4.3.6Ambient temperature14 4.3.7Pressure15 4.3.8Humidity15 4.3.9Stabilization time15 4.3.10 Orientation15 4.4Test methods15 4.4.1General15 4.4.2Unpowered storage15 4.4.3Calibration and adjustment15 latest date of publication of an id
26、entical national standard(dop) 1991-12-01 latest date of withdrawal of conflicting national standards(dow) 1991-12-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-03-15 latest date by which the
27、 national standards conflicting with the amendment have to be withdrawn(dow) 1996-03-15 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50054:1991 BSI 02-19993 Page 4.4.4Drift (continuous duty apparatus)15 4.4.5Drift (spot-reading apparat
28、us)16 4.4.6Alarm set point(s)16 4.4.7Temperature16 4.4.8Pressure16 4.4.9Humidity16 4.4.10 Air speed16 4.4.11 Pumping rate17 4.4.12 Orientation17 4.4.13 Vibration (applicable to Group I machine-mounted apparatus and to Group II fixed and transportable apparatus)17 4.4.14 Drop test (applicable to port
29、able apparatus and remote sensors)17 4.4.15 Warm-up time (not applicable to spot-reading apparatus)17 4.4.16 Time of response (not applicable to spot-reading apparatus)17 4.4.17 Minimum time of operation (spot-reading apparatus)17 4.4.18 High gas concentrations above the measuring range18 4.4.19 Bat
30、tery capacity18 4.4.20 Power supply variations18 4.4.21 Power supply interruptions, voltage transients and step changes of voltage18 4.4.22 Addition of sampling probe19 4.4.23 Dust (applicable to Group I apparatus only)19 4.4.24 Poisons and other gases19 4.4.25 Electromagnetic immunity19 5Field cali
31、bration kit19 Annex A Flammability limits (i.e. LEL and UEL) of some flammable gases and vapours20 Annex B Determination of time of response24 Annex C Breathing and draining devices which form part of a flameproof enclosure24 Annex D Tests of flameproof enclosures with breathing and draining devices
32、26 Annex E Additional requirements for crimped ribbon elements of breathing and draining devices27 Annex F Additional requirements for elements, with non-measurable paths, of breathing and draining devices27 Page Figure 1 Warm-up time in clean air9 Figure 2 Warm-up time in standard test gas9 Figure
33、3 Schematic example of equipment for use with aspirated apparatus28 Figure 4 Schematic example of equipment during application of clean air or test gas29 Figure 5 Schematic example of equipment showing change-over from clean air to test gas to begin the time of response measurement29 Figure 6 Schema
34、tic example of applicator and sensor inlet during application of test gas or clean air30 Figure 7 An example of an automated test chamber31 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50054:1991 4 BSI 02-1999 IEC publications referred
35、 to in european standard EN 50054 ISO standards referred to in european standard EN 50054 European standards referred to in european standard EN 50054 IEC 79-10 (1986)Electrical apparatus for explosive atmospheres Part 10. Classification of hazardous areas IEC 79-14 (1984)Electrical apparatus for ex
36、plosive atmospheres Part 14. Electrical installations in explosive gas atmospheres (other than mines) IEC 801-4 (1988)Electromagnetic compatibility for industrial-process measurement and control equipment Part 4. Electrical fast transient/burst requirements ISO 2738 (1987)Permeable sintered metal ma
37、terials Determination of density, oil content, and open porosity ISO 4003 (1977)Permeable sintered metal materials Determination of bubble test pore size ISO 4022 (1987)Permeable sintered metal materials Determination of fluid permeability ISO 6142 (1981)Gas analysis Preparation of calibration gas m
38、ixtures Weighing methods Addition 1 (1983) ISO 6145 (1986)Gas analysis Preparation of calibration gas mixtures Dynamic volumetric methods Parts 1, 3, 4 and 6 ISO 6146 (1979)Gas analysis Preparation of calibration gas mixtures Manometric methods ISO 6147 (1979)Gas analysis Preparation of calibration
39、gas mixtures Saturation methods EN 50014 (1977)Electrical apparatus for potentially explosive atmospheres. General requirements Amendment No. 1 (July 1979) Amendment No. 2 (June 1982) Amendment No. 3 (December 1982) Amendment No. 4 (December 1982) Amendment No. 5 (February 1986) EN 50015 (1977)Elect
40、rical apparatus for potentially explosive atmospheres. Oil immersion “o” Amendment No. 1 (July 1979) EN 50016 (1977)Electrical apparatus potentially explosive atmospheres. Pressurized apparatus “p” Amendment No. 1 (July 1979) EN 50017 (1977)Electrical apparatus for potentially explosive atmospheres.
41、 Powder filling “q” Amendment No. 1 (July 1979) EN 50018 (1977)Electrical apparatus for potentially explosive atmospheres. Flameproof enclosure “d” Amendment No. 1 (July 1979) Amendment No. 2 (December 1982) Amendment No. 3 (November 1985) EN 50019 (1977)Electrical apparatus for potentially explosiv
42、e atmospheres. Increased safety “e” Amendment No. 1 (July 1979) Amendment No. 2 (September 1983) Amendment No. 3 (December 1985) EN 50020 (1977)Electrical apparatus for potentially explosive atmospheres. Intrinsic safety “i” Amendment No. 1 (July 1979) Amendment No. 2 (December 1985) EN 50028 (1986)
43、Electrical apparatus for potentially explosive atmospheres. Encapsulation “m” Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50054:1991 BSI 02-19995 EN 50039 (1980)Electrical apparatus for potentially explosive atmospheres. Intrinsically
44、 safe electrical systems “i” EN 50055 (1991)Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group I apparatus indicating up to 5 % (V/V) methane in air EN 50056 (1991)Electrical apparatus for the detection and measurement of combustible gases
45、. Performance requirements for Group I apparatus indicating up to 100 % (V/V) methane EN 50057 (1991)Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100 % lower explosive limit EN 50058 (1991)Electrical app
46、aratus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100 % (V/V) gas HD 323.2.6 S2Basic environmental testing procedures Part 2. Tests Test Fc and guidance. Vibration (sinusoidal) HD 481.1 S1Electromagnetic compatibility for
47、industrial-process measurement and control equipment Part 1. General introduction (IEC 801-1:1984) HD 481.3 S1Electromagnetic compatibility for industrial-process measurement and control equipment Part 3. Radiated electromagnetic field requirements (IEC 801-3:1984) Licensed Copy: sheffieldun sheffie
48、ldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:25:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50054:1991 BSI 02-19997 1 Scope 1.1 This European Standard specifies general requirements for construction an
49、d testing and describes the test methods that apply to portable, transportable and fixed apparatus for the detection and measurement of combustible gas or vapour concentrations with air. The apparatus, or parts thereof, is intended for use in potentially explosive atmospheres (see 2.1) and in mines susceptible to firedamp. This European Standard is supplemented by the following European Standards, concerning the specific requirements for performance of the various types of apparatus: EN 50055, Performance requireme