EN 1434-4:2022
(Main)Thermal energy meters - Part 4: Pattern approval tests
Thermal energy meters - Part 4: Pattern approval tests
This document specifies pattern approval 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 thermal energy in legal units.
This document covers meters for closed systems only, where the differential pressure over the thermal load is limited.
This document is not applicable to:
- electrical safety requirements;
- pressure safety requirements; and
- surface mounted temperature sensors.
Thermische Energiemessgeräte - Teil 4: Prüfungen für die Bauartzulassung
Dieses Dokument legt Prüfungen zur Bauartzulassung für thermische Energiemessgeräte fest. Thermische Energiemessgeräte sind Messgeräte, die dazu bestimmt sind, die Energie zu messen, die in einem Wärmetauschkreislauf von einer als Wärmeträgerflüssigkeit bezeichneten Flüssigkeit aufgenommen (Kühlung) oder abgegeben (Heizung) wird. Das thermische Energiemessgerät zeigt die Menge der thermischen Energie in gesetzlichen Einheiten an.
Dieses Dokument behandelt nur Messgeräte für geschlossene Systeme, bei denen der Differenzdruck über die thermische Last begrenzt ist.
Dieses Dokument ist nicht anwendbar für:
— Anforderungen an die elektrische Sicherheit;
— Anforderungen an die Drucksicherheit;
— oberflächenmontierte Temperaturfühler.
Compteurs d'énergie thermique - Partie 4 : Essais en vue de l'approbation de modèle
1 Domaine d’application
Le présent document spécifie les essais en vue de l’approbation de modèle pour les 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.
Le présent document couvre les compteurs pour les systèmes fermés uniquement, où la pression différentielle dans la charge thermique est limitée.
Le présent document ne s’applique pas :
- aux prescriptions de sécurité électrique ;
- aux prescriptions de sécurité relative à la pression ;
- aux sondes de température montées en surface.
Merilniki toplote - 4. del: Preskusi za odobritev tipa
Ta dokument določa preskuse za odobritev tipa merilnikov toplote. Merilniki toplote so instrumenti, namenjeni merjenju energije, ki jo v krogotoku toplotne izmenjave absorbira (hlajenje) ali oddaja (ogrevanje) tekočina, imenovana tekočina za prenos toplote. Merilnik toplote podaja količino toplote v predpisanih enotah.
Ta dokument ne zajema zahtev za električno varnost.
Ta dokument ne zajema tlačnih varnostnih zahtev.
Ta dokument ne zajema površinsko nameščenih senzorjev temperature.
Ta standard zajema samo števce za zaprte sisteme, pri katerih je diferencialni tlak nad toplotno obremenitvijo omejen.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2022
Nadomešča:
SIST EN 1434-4:2016+A1:2019
Merilniki toplote - 4. del: Preskusi za odobritev tipa
Thermal energy meters - Part 4: Pattern approval tests
Thermische Energiemessgeräte - Teil 4: Prüfungen für die Bauartzulassung
Compteurs d'énergie thermique - Partie 4 : Essais en vue de l'approbation de modèle
Ta slovenski standard je istoveten z: EN 1434-4:2022
ICS:
17.200.20 Instrumenti za merjenje Temperature-measuring
temperature instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1434-4
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 17.200.20 Supersedes EN 1434-4:2015+A1:2018
English Version
Thermal energy meters - Part 4: Pattern approval tests
Compteurs d'énergie thermique - Partie 4 : Essais en Thermische Energiemessgeräte - Teil 4: Prüfungen für
vue de l'approbation de modèle die Bauartzulassung
This European Standard was approved by CEN on 17 July 2022.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1434-4:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General. 7
5 Requirements . 7
6 Specification of operating conditions . 8
6.1 Rated operating conditions . 8
6.2 Reference conditions . 8
6.3 Reference values for the measurand (RVM) . 8
6.3.1 General. 8
6.3.2 Reference values for the measurand . 8
7 Tests and measurements . 9
7.1 General. 9
7.2 Test programme . 10
7.3 Uncertainty of test equipment and influences of EUT . 12
7.4 Performance tests . 13
7.4.1 General. 13
7.4.2 Flow sensor . 13
7.4.3 Calculator . 16
7.4.4 Temperature sensors . 18
7.4.5 Combined sub-assemblies or complete meter . 20
7.5 Dry heat . 20
7.5.1 General. 20
7.5.2 Calculator . 20
7.5.3 Flow sensor . 20
7.5.4 Combined sub-assemblies or complete meter . 21
7.6 Cold . 21
7.6.1 General. 21
7.6.2 Calculator . 21
7.6.3 Flow sensor . 21
7.6.4 Combined sub-assemblies or complete meter . 21
7.7 Static deviations in supply voltage . 22
7.8 Durability test . 23
7.8.1 General. 23
7.8.2 Flow sensor . 23
7.8.3 Temperature sensors . 27
7.8.4 Combined sub-assemblies or complete meter . 28
7.9 Damp heat . 28
7.9.1 Damp heat cyclic . 28
7.9.2 Damp heat steady-state . 29
7.10 Short time mains voltage reduction . 29
7.11 Electrical transients . 30
7.11.1 Fast transients (bursts) . 30
7.11.2 Surge transients . 31
7.12 Electromagnetic fields . 33
7.12.1 Low frequency fields . 33
7.12.2 High frequency fields . 34
7.13 Electromagnetic field specifically caused by wireless equipment . 35
7.13.1 Electromagnetic field in distant proximity . 35
7.13.2 Electromagnetic field in close proximity . 36
7.14 Radio frequency amplitude modulated . 37
7.15 Electrostatic discharge . 39
7.16 Static magnetic field (fraud protection) . 39
7.17 Mains frequency magnetic field . 40
7.18 Internal pressure . 40
7.19 Pressure loss . 40
7.20 Electromagnetic emission . 41
7.20.1 General . 41
7.20.2 Conducted emission on power AC lines . 41
7.20.3 Conducted emission on signal and DC power lines . 41
7.20.4 Radiated emission . 42
7.21 24 h interruption in the mains power supply voltage . 42
7.22 Flow disturbances . 42
7.23 Vibration/mechanical shock . 45
8 Documentation . 45
Annex A (informative) Testing procedure for temperature sensor pairs with pockets and
without pockets . 47
A.1 Test set-up . 47
A.1.1 General . 47
A.1.2 Requirements of a temperature bath . 47
A.2 Test sequence . 49
A.3 Calculations . 50
Annex B (informative) Checklist for type approvals of thermal energy meters according to
EN 1434 . 51
Annex C (informative) Criteria for a fully developed flow profile . 70
Annex D (normative) Asymmetric swirl generator .
...
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