EN 1434-2-2007 0959 Heat meters - Part 2 Constructional requirements (Incorporating corrigendum October 2007)《量热计 第2部分 结构要求 合并勘误表-2007年10月》.pdf
《EN 1434-2-2007 0959 Heat meters - Part 2 Constructional requirements (Incorporating corrigendum October 2007)《量热计 第2部分 结构要求 合并勘误表-2007年10月》.pdf》由会员分享,可在线阅读,更多相关《EN 1434-2-2007 0959 Heat meters - Part 2 Constructional requirements (Incorporating corrigendum October 2007)《量热计 第2部分 结构要求 合并勘误表-2007年10月》.pdf(46页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARDBS EN 1434-2:2007Incorporating corrigendum no. 1Heat meters Part 2: Constructional requirementsThe European Standard EN 1434-2:2007 has the status of a British StandardICS 17.200.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59
2、g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-2:2007This British Sta
3、ndard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2007 BSI 2008ISBN 978 0 580 60652 6National forewordThis British Standard is the UK implementation of EN 1434-2:2007. It supersedes BS EN 1434-2:1997 which is withdrawn. The start and finish of text intr
4、oduced or altered by corrigendum is indicated in the text by tags . Text altered by CEN corrigendum October 2007 is indicated in the text by .The UK participation in its preparation was entrusted by Technical Committee CPI/30, Measurement of fluid flow in closed conduits, to Subcommittee CPI/30/7, V
5、olume flow-rate methods.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard c
6、annot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date Comments17486 Corrigendum No. 131 January 2008 See national forewordCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitt
7、ed without license from IHS-,-,-EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1434-2February 2007ICS 17.200.10 Supersedes EN 1434-2:1997 English VersionHeat meters - Part 2: Constructional requirementsCompteurs dnergie thermique - Partie 2: Prescriptions defabricationWrmezhler - Teil 2: Anforder
8、ungen an die KonstruktionThis European Standard was approved by CEN on 7 January 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists a
9、nd bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management 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 translationunder the responsibi
10、lity of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, I
11、reland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart,
12、36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1434-2:2007: EIncorporating corrigendum October 2007 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo repr
13、oduction or networking permitted without license from IHS-,-,-EN 1434-2:2007 (E) 2 Contents Page Foreword4 1 Scope 5 2 Normative references 5 3 Temperature sensors 5 3.1 General5 3.2 Mechanical design.6 3.2.1 General6 3.2.2 Materials of temperature probe sheath and pocket .6 3.2.3 Dimensions of dire
14、ct mounted short probes - Type DS 6 3.2.4 Dimensions of direct mounted long probes - Type DL6 3.2.5 Dimensions of pocket mounted long probes - Type PL 9 3.2.6 Dimensions of temperature pocket9 3.2.7 Design of short probes with respect to installation.11 3.2.8 Design of long probes with respect to in
15、stallation 11 3.3 Platinum temperature sensor .12 3.3.1 Specialised definitions for 2 wire temperature probes12 3.3.2 Resistance characteristics .13 3.3.3 Signal leads 14 3.3.4 Temperature sensors for the 2-wire method 14 3.3.5 Temperature sensors for the 4-wire method 14 3.3.6 Thermal response time
16、 .15 3.4 Other temperature sensors.15 4 Flow sensors15 4.1 Maximum admissible working pressure, PS in bar15 4.2 Sizes and dimensions .15 4.3 Test signal output17 4.4 Adjusting device 17 5 Calculators .17 5.1 Mechanical dimensions for calculators for domestic use.17 5.2 Terminals - specification and
17、identification18 5.2.1 General18 5.2.2 Terminals for signal leads 18 5.2.3 Terminals for connection to the mains supply.19 5.3 Batteries20 5.4 Dynamic behaviour20 5.5 Test signal output20 5.6 24 h interruption in supply voltage20 6 Complete meter20 7 Interfaces between sub-assemblies 20 7.1 Definiti
18、ons for pulse device interfaces21 7.1.1 General21 7.1.2 Electrical connection.21 7.1.3 Classification of pulse output devices 21 7.1.4 Timing and electrical parameters for pulse output devices (other than test signals)22 7.1.5 Classification of pulse input devices 22 7.1.6 Timing and electrical para
19、meter for pulse input devices 23 7.1.7 Compatibility 23 8 Marking and security seals.24 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN 1434-2:2007 (E) 3 8.1 Marking.24 8.1.1
20、General .24 8.1.2 Temperature sensor pairs 24 8.1.3 Pockets.24 8.1.4 Flow sensor24 8.1.5 Calculator .25 8.1.6 Complete meter .25 8.2 Sites for marking .26 8.3 Security seals 26 Annex A (informative) Examples of temperature sensors27 Annex B (normative) Input and output test signals 36 Annex C (infor
21、mative) Low voltage Power Supply for heat meters and their sub-assemblies 39 C.1 Remote supply.39 C.1.1 Voltage (DC or AC) 39 C.1.2 Current available .39 C.1.3 Cabling requirements39 C.2 Local external DC supply39 C.2.1 Voltage39 C.2.2 Other data.40 C.3 Power supply specifications 40 Annex ZA (infor
22、mative) Relationship between this European Standard and the Essential Requirements of EU Directive 2004/22/EC, MID 41 Bibliography42 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,
23、-,-EN 1434-2:2007 (E) 4 Foreword This document (EN 1434-2:2007) has been prepared by Technical Committee CEN/TC 176 “Heat meters”, the secretariat of which is held by DS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorse
24、ment, at the latest by August 2007, and conflicting national standards shall be withdrawn at the latest by August 2007. This document supersedes EN 1434-2:1997. The other parts are Part 1 - General requirements Part 3 - Data exchange and interfaces Part 4 - Pattern approval tests Part 5 - Initial ve
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