1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 88-1:2011Pressure regulators and as-sociated safety devices for gasPart 1: Pressure regulators for inlet pressures up to and including 50 kPa Licensed Copy: Wang Bin, ISO/E
2、XCHANGE CHINA STANDARDS, 14/11/2011 06:47, Uncontrolled Copy, (c) BSIBS EN 88-1:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 88-1:2011. It supersedes BS EN 12067-1:1999, BS EN 12078:1998 and BS EN 88-1:2007, which will be withdrawn on 26 February 2014.Th
3、e UK participation in its preparation was entrusted to Technical Committee GSE/22, Safety and control devices for gas and oil burners and gas burning appliances.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to incl
4、ude all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 67964 3 ICS 23.060.40Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Po
5、licy and Strategy Committee on 31 July 2011.Amendments issued since publicationDate T e x t a f f e c t e dLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/11/2011 06:47, Uncontrolled Copy, (c) BSIBS EN 88-1:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 88-1 April 2011 ICS 23.060
6、.40 Supersedes EN 12067-1:1998, EN 12078:1998, EN 88-1:2007English Version Pressure regulators and associated safety devices for gas appliances - Part 1: Pressure regulators for inlet pressures up to and including 50 kPa Rgulateurs de pression et dispositifs de scurit associs pour appareils gaz - Pa
7、rtie 1: Rgulateurs de pression pour pression amont infrieure ou gale 50 kPa Druckregler und zugehrige Sicherheitseinrichtungen fr Gasgerte - Teil 1: Druckregler fr Eingangsdrcke bis einschlielich 50 kPa This European Standard was approved by CEN on 26 February 2011. CEN members are bound to comply w
8、ith 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 CEN-CENELEC Man
9、agement Centre or to any CEN 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same s
10、tatus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portu
11、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means
12、reserved worldwide for CEN national Members. Ref. No. EN 88-1:2011: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/11/2011 06:47, Uncontrolled Copy, (c) BSIBS EN 88-1:2011EN 88-1:2011 (E) 2 Contents Page Foreword 51 Scope 72 Normative references 73 Terms and definitions .84 Classificatio
13、n . 114.1 Classes of control . 114.2 Groups of control 114.3 Classes of control functions . 115 Units of measurement and test conditions 116 Construction requirements 126.1 General . 126.2 Mechanical parts of the control . 126.2.1 Appearance . 126.2.2 Holes 126.2.3 Breather holes . 126.2.4 Test for
14、leakage of breather holes 126.2.5 Screwed fastenings 136.2.6 Jointing 136.2.7 Moving parts 136.2.8 Sealing caps 136.2.9 Dismantling and reassembly . 136.2.101Adjustments 136.2.102Resistance to pressure 136.2.103Blockage of canals and orifices 136.2.104Signal tube connections 136.3 Materials 136.3.1
15、General material requirements 136.3.2 Housing 136.3.3 Test for leakage of housing after removal of non-metallic parts . 146.3.4 Zinc alloys . 146.3.5 Springs providing closing and/or sealing force 146.3.6 Resistance to corrosion and surface protection . 146.3.7 Impregnation . 146.3.8 Seals for gland
16、s for moving parts. 146.4 Gas connections . 146.4.1 Making connections . 146.4.2 Connection sizes 146.4.3 Threads 146.4.4 Union joints . 146.4.5 Flanges 146.4.6 Compression fittings 156.4.7 Nipples for pressure test . 156.4.8 Strainers 156.5 Electronic parts of the control . 156.6 Protection against
17、 internal faults for the purpose of functional safety 157 Performance 157.1 General . 157.2 Leak tightness . 157.3 Test for leak tightness 157.3.1 General . 157.3.2 External leak-tightness 167.3.3 Internal leak-tightness 16Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/11/2011 06:47, Unco
18、ntrolled Copy, (c) BSIBS EN 88-1:2011EN 88-1:2011 (E) 3 7.3.101External leak-tightness for signal carrying compartment(s) 167.4 Torsion and bending . 167.5 Torsion and bending tests 167.6 Rated flow rate . 167.7 Test for rated flow . 167.7.1 Apparatus . 167.7.2 Test procedure . 167.7.3 Conversion of
19、 air flow rate . 167.8 Durability 167.9 Performance tests for electronic controls 167.10 Long-term performance for electronic controls . 177.101 Pressure regulator performance 177.101.1General . 177.101.2General test procedure . 187.101.3Class A pressure regulator performance 207.101.4Class B pressu
20、re regulator performance 207.101.5Class C pressure regulator performance 217.101.6Endurance 227.101.7Lock-up pressure 227.101.8Requirement for rendered inoperative pressure regulators . 237.101.9Test for rendered inoperative pressure regulators 237.102 Pneumatic gas/air ratio pressure regulator perf
21、ormance . 237.102.1General . 237.102.2General test procedure . 237.102.3Control performance and stability . 247.102.4Settling time . 257.102.5Gas/air ratio adjustment . 257.102.6Offset adjustment 267.102.7Endurance 268 EMC/Electrical requirements 268.1 Protection against environmental influences. 26
22、8.2 Supply voltage variations below 85 % of rated voltage 278.3 Short term voltage interruptions and decreases . 278.4 Supply frequency variations 278.5 Surge immunity test 278.6 Electrical fast transient/burst . 278.7 Immunity to conducted disturbances . 278.8 Immunity to radiated fields . 278.9 El
23、ectrostatic discharge immunity test 278.10 Power frequency magnetic field immunity test 278.11 Electrical requirements . 278.11.1 General . 278.11.2 Electrical equipment . 289 Marking, installation and operating instructions . 289.1 Marking . 289.2 Installation and operating instructions . 289.3 War
24、ning notice . 30Annex A (informative) Gas connections in common use in the various countries . 31Annex B (informative) Leak-tightness test volumetric method . 32Annex C (informative) Leak-tightness test pressure loss method 33Annex D (normative) Conversion of pressure loss into leakage rate . 34Anne
25、x E (normative) Electrical/electronic component fault modes 35Annex F (normative) Additional requirements for safety accessories and pressure accessories as defined in EC Directive 97/23/EC 36Annex G (normative) Materials for pressurized parts . 37Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARD
26、S, 14/11/2011 06:47, Uncontrolled Copy, (c) BSIBS EN 88-1:2011EN 88-1:2011 (E) 4 Annex H (informative) Additional materials for pressurized parts 38Annex I (normative) Requirements for controls used in DC supplied gas burners and gas burning appliances 39Annex AA (informative) Typical pressure regul
27、ators and pressure regulator parts . 40Annex BB (informative) Overview of requirements and test conditions (as given in Clause 7), and examples of performance curves for pressure regulators 41Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EC Dire
28、ctive 2009/142/EC relating to appliances burning gaseous fuels 47Bibliography . 49Figures Figure 1 Step response of a transfer element . 10Figure 2 Performance test apparatus 19Figure 3 Delta p versus rated flow rate curve . 30Figure AA.1 Types of constant pressure regulators 40Figure BB.1 Example f
29、or class A pressure regulator including maximum outlet pressure variations for constant outlet setting pressure p2sand lock-up pressure p2fincluding typical results 42Figure BB.2 Example for class A pressure regulator including maximum outlet pressure variations for adjustable outlet setting pressur
30、es p2smin, p2smax, and lock-up pressures p2fmin, p2fmax, including typical results . 43Figure BB.3 Example for class A pressure regulator including maximum outlet pressure variation for constant outlet setting pressure p2sincluding typical results 44Figure BB.4 Example for class B pressure regulator
31、 including maximum outlet pressure variation for constant outlet setting pressure p2sincluding typical results 44Figure BB.5 Example for class C pressure regulator including maximum outlet pressure variation for constant outlet setting pressure p2sincluding typical results 45Tables Table 1 Gas press
32、ure at inlet to the pressure regulator 17Table 2 Outlet pressure variation from the outlet setting pressure p2s17Table 3 Control performance test procedure 24Table BB.1 Overview of pressure regulator requirements 41Table BB.2 Test procedure . 46Table ZA.1 Correspondence between this European Standar
33、d and Directive 2009/142/EC relating to appliances burning gaseous fuels 47Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/11/2011 06:47, Uncontrolled Copy, (c) BSIBS EN 88-1:2011EN 88-1:2011 (E) 5 Foreword This document (EN 88-1:2011) has been prepared by Technical Committee CEN/TC 58 “Sa
34、fety and control devices for burners and appliances burning gaseous or liquid fuels”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2011, and con
35、flicting national standards shall be withdrawn at the latest by April 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This docum
36、ent supersedes EN 88-1:2007, EN 12067-1:1998 and EN 12078:1998. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informat
37、ive Annex ZA, which is an integral part of this document. This document is intended to be used in conjunction with EN 13611:2007. This document refers to clauses of EN 13611:2007 or adapts clauses by stating “with the following modification”, “with the following addition”, “is replaced by the follow
38、ing” or “is not applicable“ in the corresponding clause. This European Standard adds clauses or sub-clauses to the structure of EN 13611:2007 which are particular to this European Standard. It should be noted that these clauses and sub-clauses are not indicated as an addition. Sub-clauses or annexes
39、 which are additional to those in EN 13611:2007 are numbered starting from 101 or are designated as Annex AA, BB, CC etc. It should be noted that the following significant technical changes compared to the previous edition have been incorporated in this European Standard: a) alignment with EN 13611:
40、2007; b) requirements and tests of Pneumatic gas/air ratio pressure regulators (EN 12067-1) and Zero pressure regulators (EN 12078) included in this European Standard; c) requirements and tests for breather holes changed; d) requirements and tests for housings changed; e) general requirement for lea
41、k tightness changed; f) requirement for rated flow rate changed; g) tests for class A and B regulators changed; h) declarations of nominal diameters and maximum inlet pressure extended. EN 88 Pressure regulators and associated safety devices for gas appliances consists of the following parts: EN 88-
42、1, Pressure regulators and associated safety devices for gas appliances Part 1: Pressure regulators for inlet pressures up to and including 50 kPa; EN 88-2, Pressure regulators and associated safety devices for gas appliances Part 2: Pressure regulators for inlet pressures above 500 mbar up to and i
43、ncluding 5 bar. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/11/2011 06:47, Uncontrolled Copy, (c) BSIBS EN 88-1:2011EN 88-1:2011 (E) 6 Performance Level (PL) or Safety Integrity Level (SIL) classifications according to EN ISO 13849-1 or EN 61508-1 cannot automatically be claimed based
44、upon compliance with this European Standard. Pressure regulators with PL or SIL classification do not automatically meet the requirements of this European Standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to impleme
45、nt this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switz
46、erland and the United Kingdom. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/11/2011 06:47, Uncontrolled Copy, (c) BSIBS EN 88-1:2011EN 88-1:2011 (E) 7 1 Scope This European Standard specifies the safety, construction and performance requirements for pressure regulators and pneumatic gas
47、/air ratio pressure regulators (zero pressure regulators are included as a special type of pneumatic gas/air ratio pressure regulator), intended for use with gas burners, gas appliances and similar use, hereafter referred to as pressure regulators. This European Standard is applicable to pressure re
48、gulators with declared maximum inlet pressures up to and including 50 kPa (500 mbar) of nominal connection sizes up to and including DN 250 for use with one or more fuel gases in accordance with EN 437, pressure regulators which use auxiliary energy, pneumatic gas/air ratio pressure regulators, which function by controlling a gas outlet pressure in response to an air s
