SIST EN 1434-5:2016+A1:2019

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Thermische Energiemessgeräte - Teil 5: Tests für Konformitätsuntersuchungen und EichungenCompteurs d'énergie thermique - Partie 5 : Essais de vérification initiauxThermal energy meters - Part 5: Initial verification tests17.200.10Toplota. KalorimetrijaHeat. CalorimetryICS:Ta slovenski standard je istoveten z:EN 1434-5:2015+A1:2019SIST EN 1434-5:2016+A1:2019en,fr,de01-april-2019SIST EN 1434-5:2016+A1:2019SLOVENSKI
STANDARDSIST EN 1434-5:20161DGRPHãþD



SIST EN 1434-5:2016+A1:2019



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1434-5:2015+A1
February
t r s { ICS
s yä t r rä s r Supersedes EN
s v u væ wã t r s wEnglish Version
Thermal energy meters æ Part
wã Initial verification tests Compteurs d 5énergie thermique æ Partie
w ã Essais de vérification initiaux
Thermische Energiemessgeräte æ Teil
wã Tests für Konformitätsuntersuchungen und Eichungen This European Standard was approved by CEN on
w September
t r s w and includes Amendment
s approved by CEN on
w February
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
9
t r s { CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s v u væ wã t r s w ªA sã t r s { ESIST EN 1434-5:2016+A1:2019



EN 1434-5:2015+A1:2019 (E) 2 Contents Page European foreword . 3 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 5 4 General . 5 5 Uncertainty of test equipment . 6 6 Tests to be carried out . 6 6.1 General . 6 6.2 Flow sensors . 6 6.3 Temperature sensor pair . 7 6.3.1 Error in temperature difference . 7 6.3.2 Insulation resistance . 8 6.3.3 Single temperature sensor for smart metering applications . 8 6.4 Calculator . 8 6.5 Calculator and temperature sensor pair . 9 6.5.1 Heating and cooling applications . 9 6.5.2 Calculator with single temperature sensor for smart metering applications . 9 6.6 Combined !thermal energy meter" . 9 6.7 Complete meter . 9 7 Documentation to be supplied . 10 Annex ZA (informative)
Relationship between this European Standard and the essential requirements of Directive 2014/32/EU aimed to be covered . 11
SIST EN 1434-5:2016+A1:2019



EN 1434-5:2015+A1:2019 (E) 3 European foreword This document (EN 1434-5:2015+A1:2019) 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 August 2019, and conflicting national standards shall be withdrawn at the latest by August 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 5 February 2018. This document supersedes !EN 1434-5:2015". 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. For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document. EN 1434, 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 1434-5:2007, the following changes have been made: — metrological requirements for smart metering applications are added; — additional functionalities for smart metering applications are added; — bath constructions are added; — tests for cooling applications are added; — single temperature sensor for smart metering are added;
1) EN 1434-3 is maintained by CEN/TC 294. SIST EN 1434-5:2016+A1:2019



EN 1434-5:2015+A1:2019 (E) 4 — test for bi-functional meters for change-over between heating and cooling 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. SIST EN 1434-5:2016+A1:2019



EN 1434-5:2015+A1:2019 (E) 5 1 Scope This European Standard specifies initial verification tests 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. 2 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 1434-1:2015+A1:2018, Thermal energy meters — Part 1: General requirements" !EN 1434-4:2015+A1:2018, Thermal Energy meters —Part 4: Pattern approval tests" EN 60751, Industrial platinum resistance thermometers and platinum temperature sensors (IEC 60751) 3 Terms and definitions For the purposes of this document, the terms and definitions given in !EN 1434-1:2015+A1:2018" apply. 4 General Initial verification of a measuring instrument is a series of tests and visual examinations carried out to determine whether an instrument manufactured to replicate a given pattern conforms to that pattern and to regulations, and that its metrological characteristics lie within the limits of the maximum permissible errors. If the instrument passes all tests and examinations, it is given legal character by its acceptance as evidenced by stamping and/or issuance of a certificate of verification. The provisions of this standard also apply to the re-verification of !thermal energy meters". The instrument shall be tested under rated operating conditions at the extremes and midpoints of its ranges. Initial verification is divided into metrological, technical and administrative phases. In tests of a !thermal energy meter" as a combined instrument, the flow sensor, the temperature sensors and the calculator shall each be tested separately. Unless otherwise stated in the certificate of pattern approval, the verification shall be carried out in accordance with this standard. NOTE Modern !thermal energy meters" are mainly equipped with CMOS microprocessors with a very low power consumption, allowing battery operation. Testing and adjusting of this type of meter needs a completely different approach. Until now, almost every meter type needed its own test equipment to handle the manufacturer's specific requirements. This is a very complicated and expensive way for users of several types of meters and for initial verification institutes. The more different types of !thermal energy meters" a user has SIST EN 1434-5:2016+A1:2019



EN 1434-5:2015+A1:2019 (E) 6 installed, the more testing equipment he may need. An economical testing of several meters should be possible and an easy adaptation to the existing test bench is of great interest. Since this problem came up, experts have been researching an acceptable solution to it. Details of one example of an acceptable solution are given in “Normierter Wärmezähler Adapter” (Standardised heat meter adapter) Version 1.5 of Sep
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