EN 1434-2:2015
(Main)Heat meters - Part 2: Constructional requirements
Heat meters - Part 2: Constructional requirements
This European Standard specifies the constructional 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 2: Anforderungen an die Konstruktion
Diese Europäische Norm legt die Anforderungen an die Konstruktion von Wärmezählern fest. Wärmezähler sind Geräte, die dazu dienen, die Energiemenge zu messen, die in einem Wärmetauscher¬kreislauf 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 2: Prescriptions de fabrication
La présente Norme européenne spécifie les prescriptions de fabrication 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 - 2. del: Konstrukcijske zahteve
Ta evropski standard določa konstrukcijske zahteve in se uporablja za toplotne števce, tj. instrumente, ki so namenjeni za merjenje toplote, ki jo v krogotoku toplotne izmenjave absorbira (hlajenje) ali oddaja (ogrevanje) tekočina, imenovana tekočina za prenos toplote. Toplotni števec podaja toploto v predpisanih enotah. Ta evropski standard ne zajema električnih varnostnih zahtev. Ta evropski standard ne zajema tlačnih varnostnih zahtev. Ta evropski standard ne zajema površinsko nameščenih senzorjev temperature. Ta standard zajema samo števce za zaprte sisteme, kjer je diferencialni tlak nad toplotno obremenitvijo omejen.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Merilniki toplote - 2. del: Konstrukcijske zahteveWärmezähler - Teil 2: Anforderungen an die KonstruktionCompteurs d'énergie thermique - Partie 2: Prescriptions de fabricationHeat meters - Part 2: Constructional requirements17.200.10Toplota. KalorimetrijaHeat. CalorimetryICS:Ta slovenski standard je istoveten z:EN 1434-2:2015SIST EN 1434-2:2016en,fr,de01-januar-2016SIST EN 1434-2:2016SLOVENSKI
STANDARDSIST EN 1434-2:2007/AC:2007SIST EN 1434-2:20071DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1434-2
November
t r s w ICS
s yä t r rä s r Supersedes EN
s v u væ tã t r r yEnglish Version
Heat meters æ Part
tã Constructional requirements Compteurs d 5énergie thermique æ Partie
tã Prescriptions de fabrication
Wärmezähler æ Teil
tã Anforderungen an die Konstruktion This European Standard was approved by CEN on
w September
t r s wä
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 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:
Avenue Marnix 17,
B-1000 Brussels
t r s w 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 tã t r s w ESIST EN 1434-2:2016
Relationship between this European Standard and the Essential Requirements of EU Directive 2004/22/EC, MID . 40 Bibliography . 41
1) EN 1434-3 is maintained by CEN/TC 294. SIST EN 1434-2:2016
Key 1 temperature sensing element 2 protective sheath 3 sealing ring 4 ejection device A: < 15 mm B: = 27,5 mm or = 38 mm or 60 mm Figure 1 — Temperature probes type DS 4.2.4 Dimensions of direct mounted long probes - Type DL The dimensions shall be as given in Figure 2. Further information is given in Annex A, Figures A.2 and A.3. The qualifying immersion depth shall be 50 % of the length B – or less if so specified by the manufacturer. SIST EN 1434-2:2016
Key 1 temperature sensing element 4 outline of head probe 2 protective sheath 5 outline of permanently connected signal lead probe 3 sealing surface 6 inlet for signal cable – ø
¶ 9 mm G ½ B thread in accordance with EN ISO 228-1 A: < 30 mm or
¶ 50
...
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