SIST EN 1434-1:2016/oprA1:2017

Heat meters - Part 1: General requirements

This European Standard specifies the general requirements and applies to heat meters. Heat 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 heat 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.

Wärmezähler - Teil 1: Allgemeine Anforderungen

Diese Europäische Norm legt die allgemeinen Anforderungen für Wärmezähler fest. Wärmezähler sind Geräte, die dazu dienen, die Energiemenge zu messen, die in einem Wärmetauscherkreis¬lauf durch eine als Wärmeträgerflüssigkeit bezeichnete Flüssigkeit aufgenommen (Kühlen) oder abgegeben (Heizen) wird. Der Wärmezähler zeigt die Wärmemenge in gesetzlichen Einheiten an.
Elektrische Sicherheitsanforderungen werden in dieser Europäischen Norm nicht behandelt.
Den Druck betreffende Sicherheitsanforderungen werden in dieser Europäischen Norm nicht behandelt.
Oberflächenmontierte Temperaturfühler werden in dieser Europäischen Norm nicht behandelt.
Die vorliegende Norm behandelt ausschließlich Zähler für geschlossene Systeme, in denen der Differenz-druck am Wärmeübertrager begrenzt ist.

Compteurs d'énergie thermique - Partie 1 : Prescriptions générales

La présente Norme européenne spécifie les prescriptions générales relatives aux compteurs d'énergie thermique. Les compteurs d'énergie thermique sont des instruments destinés à mesurer l'énergie thermique qui, dans un circuit d'échange thermique, est absorbée (refroidissement) ou cédée (chauffage) par un liquide appelé « liquide caloporteur ». Le compteur d'énergie thermique fournit la quantité d'énergie thermique en unités de mesure légales.
La présente Norme européenne ne traite pas des prescriptions de sécurité électrique.
La présente Norme européenne ne traite pas des prescriptions de sécurité relative à la pression.
La présente Norme européenne ne traite pas des sondes de température montées en surface.
La présente norme couvre les compteurs pour les systèmes fermés uniquement, où la pression différentielle dans la charge thermique est limitée.

Merilniki toplote - 1. del: Splošne zahteve - Dopolnilo A1

General Information

• Status: Not Published
• Public Enquiry End Date: 02-Jan-2018
• ICS: 17.200.10 - Heat. Calorimetry
• Technical Committee: OGS - Heating for buildings
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 10-Jan-2019
• Due Date: 15-Jan-2019
• Completion Date: 10-Jan-2019
• Directive: 2004/22/EC - Directive 2004/22/EC of the European Parliament and of the Council of 31 March 2004 on measuring instruments
• Directive: 2014/32/EU - Directive 2014/32/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of measuring instruments
• Mandate: M/374 - Mandate to CEN and CENELEC for standards in the field of measuring instruments
• Mandate: M/441 - Standardisation mandate to CEN, CENELEC and ETSI in the field of measuring instruments for the development of an open architecture for utility meters involving communication protocols enabling interoperability
• Mandate: M/541 - [C(2015)8558] Standardization request in support of the implementation of Directive 2014/32/EU on measuring instruments
• Ref Project: EN 1434-1:2015/prA1 - Thermal energy meters - Part 1: General requirements

Relations

• Consolidated By: SIST EN 1434-1:2016+A1:2019 - Thermal energy meters - Part 1: General requirements
• Effective Date: 01-Mar-2019
• Amends: SIST EN 1434-1:2016 - Heat meters - Part 1: General requirements
• Effective Date: 01-Dec-2017

Overview

EN 1434-1:2015/prA1 (CEN) - titled Thermal energy meters - Part 1: General requirements - defines the general requirements for meters that measure thermal energy transferred by a liquid in a heat‑exchange circuit. It covers instruments intended to quantify heat given up (heating) or absorbed (cooling) by the heat‑conveying liquid and to indicate the quantity of heat in legal units. This amendment updates terminology to “thermal energy meter”, aligns the standard with Directive 2014/32/EU (MID) and clarifies software and smart‑metering references.

Note: electrical safety, pressure safety and surface‑mounted temperature sensors are excluded. The standard applies to closed systems only where the differential pressure over the thermal load is limited.

Key topics and technical requirements

EN 1434-1/prA1 sets out the normative framework and references for more detailed parts of EN 1434. Major topics covered or referenced include:

• Terms and definitions - unified terminology (thermal energy meter; meter for smart metering).
• Rated operating conditions and declared influence quantities (operating ranges suppliers must state).
• Accuracy classes and metrological characteristics (reference to accuracy classes and MPEs as aligned with MID).
• Environmental and climatic classifications (operating and storage environments).
• Durability, reproducibility and repeatability - metrological performance and lifetime considerations.
• Software - requirements and conformity guidance (note: WELMEC Software Guide 7–2 classifies heat meters as P‑meters, risk class C).
• Indication and display requirements, information to accompany the instrument, and inscriptions.
• Protection against fraud and data integrity, and provisions for smart metering (data communication capabilities; see EN 13757 and CEN/CLC/ETSI/TR 50572).
• Conformity assessment - relationship to Directive 2014/32/EU (MID) and Annex ZA mapping for presumption of conformity.

Practical applications

EN 1434-1/prA1 establishes the baseline requirements that enable:

• Accurate billing and sub‑metering in district heating/cooling systems.
• Performance monitoring of heat exchangers and building HVAC systems.
• Integration of thermal energy meters into smart metering and building energy management systems.
• Compliance pathways for placing meters on the EU/EFTA market under MID.

Who should use this standard

• Meter manufacturers (design and declaration of rated conditions and software risk class).
• Test laboratories and conformity assessment bodies (type approval, MPE verification).
• Utilities and energy suppliers (procurement specifications and billing accuracy).
• Installers, HVAC engineers and building managers (selection and deployment in closed systems).
• Regulators and notified bodies referencing MID conformity.

Related standards and references

• Directive 2014/32/EU (Measuring Instruments Directive, MID)
• WELMEC Software Guide 7‑2 (software risk classification)
• EN 13757 and CEN/CLC/ETSI/TR 50572 (smart metering communication)

Keywords: EN 1434-1:2015/prA1, thermal energy meters, heat meters, MID, accuracy classes, smart metering, WELMEC, thermal energy measurement.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2017
Toplotni števci - 1. del: Splošne zahteve
Heat meters - Part 1: General requirements
Wärmezähler - Teil 1: Allgemeine Anforderungen
Compteurs d'énergie thermique - Partie 1 : Prescriptions générales
Ta slovenski standard je istoveten z: EN 1434-1:2015/prA1
ICS:
17.200.10 Toplota. Kalorimetrija Heat. Calorimetry
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 1434-1:2015
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
October 2017
ICS 17.200.10
English Version
Thermal energy meters - Part 1: General requirements
Compteurs d'énergie thermique - Partie 1 : Wärmezähler - Teil 1: Allgemeine Anforderungen
Prescriptions générales
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 176.

This draft amendment A1, if approved, will modify the European Standard EN 1434-1:2015. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1434-1:2015/prA1:2017 E
worldwide for CEN national Members.

EN 1434-1:2017/prA1:2017 (E)
Contents Page
European foreword . 3
1 Modification to the English title . 4
2 Modifications overall the document . 4
3 Modification to Clause 3, "Terms and definitions". 4
4 Modification to subclause 6.10, "Software" . 4
5 Modification to the "Bibliography" . 4
6 Modification to Annex ZA . 4
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/32/EU aimed to be covered . 5

EN 1434-1:2017/prA1:2017 (E)
European foreword
This document (EN 1434-1:2017/prA1:2017) has been prepared by Technical Committee CEN/TC 176
“Thermal energy meters”, the secretariat of which is held by SIS.
This document is currently submitted to the CEN Enquiry.
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.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this
document.
EN 1434-1:2017/prA1:2017 (E)
1 Modification to the English title
Replace the the English title with the following:
“Thermal energy meters — Part 1: General requirements".
The German title "Wärmezähler — Teil 1: Allgemeine Anforderungen" and the French title "Compteurs
d’énergie thermique — Partie 1: Precriptions générales" remain unchanged.
2 Modifications overall the document
Overall the document, replace "heat meter" with "thermal energy meter”.
Overall the document, replace "heating/cooling meter" with "thermal energy meter".
Overall the document, replace the references "EN 1434-X:2015" with "EN 1434-X:2015+prA1:2017".
3 Modification to Clause 3, "Terms and definitions"
Replace "heat meter or cooling meter" with "thermal energy meter" to read:
"3.28
meter for smart metering
thermal energy meter with the capability of data communication and support of smart metering
functionalities
Note 1 to entry: Data could be transmitted via user interface and/ or communi
...