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CSA C900.2:21 Thermal energy meters - Part 2: Constructional requirements (Adopted CEN EN 1434-2:2015, edition 3:2015 consolidated with amendment 1:2018, with Canadian deviations)
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(EN 1434-2:2015+A1:2018, MOD)
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(EN 1434-2:2015+A1:2018, MOD)
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CSA C900.2:21
April 2021
Title: Thermal energy meters — Part 2: Constructional requirements
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CSA C900.2:21
(EN 1434-2:2015+A1:2018, MOD)
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ICS 17.200.10
ISBN 978-1-4883-3209-8
© 2021 Canadian Standards Association
All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.
CSA C900.2:21 Thermal energy meters — Part 2: Constructional requirements
CSA C900.2:21
(EN 1434-2:2015+A1:2018, MOD)
This is the third edition of CSA C900.2, Thermal energy meters — Part 2: Constructional requirements, which is an adoption, with Canadian deviations, of the identically titled CEN (European Committee for Standardization) Standard EN 1434-2 (edition 3:2015 consolidated with Amendment 1:2018). It supersedes the previous edition, published in 2013 as CAN/CSA-C900.2 (adopted EN 1434-2:2007), Heat meters — Part 2: Constructional requirements.
For brevity, this Standard will be referred to as “CSA C900.2” throughout.
This Standard is one of a group of Standards on Thermal energy meters being adopted by CSA Group, which consists of the following:
CSA C900.1 (adopted EN 1434-1) — Part 1: General requirements;
CSA C900.2 (adopted EN 1434-2) — Part 2: Constructional requirements;
CSA C900.3 (adopted EN 1434-3) — Part 3: Data exchange and interfaces;
CSA C900.4 (adopted EN 1434-4) — Part 4: Pattern approval tests;
CSA C900.5 (adopted EN 1434-5) — Part 5: Initial verification tests; and
CSA C900.6 (adopted EN 1434-6) — Part 6: Installation, commissioning, operational monitoring and maintenance.
This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.
This Standard was reviewed for Canadian adoption by the CSA Technical Committee on Thermal Energy Meters, under the jurisdiction of the CSA Strategic Steering Committee on Fuels and Appliances, and has been formally approved by the Technical Committee.
This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
© 2021 Canadian Standards Association
All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. CEN material is reprinted with permission. Where the words “this European Standard” appear in the text, they should be interpreted as “this National Standard of Canada”.
April 2021 © 2021 Canadian Standards Association CSA/5
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1434-2:2015+A1
November 2018
ICS 17.200.10
English Version
Thermal energy meters - Part 2: Constructional requirements
Compteurs d'énergie thermique - Partie 2 : Prescriptions de fabrication
Wärmezähler - Teil 2: Anforderungen an die Konstruktion
This European Standard was approved by CEN on 5 September 2015 and includes Amendment 1 approved by CEN on 18 July 2018.
CEN 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 standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION C OMITÉ E UR O PÉEN DE N ORMA LI SA TIO N EUROPÄISCHES KOMITEE FÜR NORMUN G
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
Ref. No. EN 1434-2:2015+A1:2018 E
EN 1434-2:2015+A1:2018 (E)
Contents Page
European foreword 3
Scope 4
Normative references 4
Terms and definitions 5
Temperature sensors 5
General 5
Mechanical design 5
Platinum temperature sensor 10
Other temperature sensors 12
Flow sensors 13
Maximum admissible working pressure, PS in bar 13
Sizes and dimensions 13
Test signal output 14
Adjusting device 14
Calculators 15
Terminals - specification and identification 15
Batteries 17
Dynamic behaviour 17
Test signal output 17
24 h interruption in supply voltage 18
Complete meter 18
Interfaces between sub-assemblies 18
General 18
Definitions for pulse device interfaces 18
Marking and security seals 21
Marking 21
Sites for marking 23
Security seals 23
Annex A (informative) Examples of temperature sensors 24
Annex B (normative) Input and output test signals 35
Annex C (informative) Low voltage Power Supply for !thermal energy meters"and their
sub-assemblies 37
Remote supply 37
Local external DC supply 37
Power supply specifications 38
Annex ZA (informative) Relationship between this European Standard and the essential requirements of Directive2014/32/EU aimed to be covered 39
Bibliography 40
2 CSA C900.2:21
EN 1434-2:2015+A1:2018 (E)
European foreword
This document (EN 1434-2:2015+A1:2018) has been prepared by Technical Committee CEN/TC 176 “Thermal energy meters”, the secretariat of which is held by SIS.
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 May 2019, and conflicting national standards shall be withdrawn at the latest by May 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document includes Amendment 1, approved by CEN on 2018-07-18. This document supersedes !EN 1434-2:2015".
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
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 informative Annex ZA, which is an integral part of this document.
EN 1434-2, !Thermal energy meters" consists of the following parts:
Part 1: General requirements
Part 2: Constructional requirements
Part 3: Data exchange and interfaces1)
Part 4: Pattern approval tests
Part 5: Initial verification tests
Part 6: Installation, commissioning, operational monitoring and maintenance
In comparison to EN 1434-2:2007, the following changes have been made:
additional functionalities for smart metering applications are added;
minimum requirements for test signal output of calculators are added;
minimum requirements for test data interface of complete !thermal energy meters" are added;
new forms of pockets and sensors and parmeter setting and adjustment through interface are added.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1) EN 1434-3 is maintained by CEN/TC 294.
CSA C900.2:21 3
EN 1434-2:2015+A1:2018 (E)
Scope
This European Standard specifies the constructional requirements for !thermal energy meters".
!Thermal energy meters" are instruments intended for measuring the energy which in a heat- exchange circuit is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid. The !thermal energy meter" indicates the quantity of heat in legal units.
Electrical safety requirements are not covered by this European Standard. Pressure safety requirements are not covered by this European Standard.
Surface mounted temperature sensors are not covered by this European Standard.
This standard covers meters for closed systems only, where the differential pressure over the thermal load is limited.
Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 1: Steel flanges
EN 1092-2, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 2: Cast iron flanges
EN 1092-3, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 3: Copper alloy flanges
!EN 1434-1:2015+A1:2018, Thermal energy meters — Part 1: General requirements"
EN 1434-3, Heat Meters — Part 3: Data exchange and interfaces
EN 60751:2008, Industrial platinum resistance thermometers and platinum temperature sensors (IEC 60751:2008)
EN 60947-5-6, Low-voltage switchgear and controlgear — Part 5-6: Control circuit devices and switching elements — DC interface for proximity sensors and switching amplifiers (NAMUR) (IEC 60947-5-6)
EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions, tolerances and designation (ISO 228-1)
ISO 4903, Information technology — Data communication — 15-pole DTE/DCE interface connector and contact number assignments
4 CSA C900.2:21