SIST EN 1434-2:2016+A1:2019
(Main)Thermal energy meters - Part 2: Constructional requirements
Thermal energy meters - Part 2: Constructional requirements
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.
Thermische Energiemessgeräte - Teil 2: Anforderungen an die Konstruktion
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 (vključno z dopolnilom A1)
Ta evropski standard določa konstrukcijske zahteve za merilnike 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 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
Frequently Asked Questions
SIST EN 1434-2:2016+A1:2019 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Thermal energy meters - Part 2: Constructional requirements". This standard covers: 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.
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.
SIST EN 1434-2:2016+A1:2019 is classified under the following ICS (International Classification for Standards) categories: 17.200.10 - Heat. Calorimetry. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 1434-2:2016+A1:2019 has the following relationships with other standards: It is inter standard links to SIST EN 1434-2:2016, SIST EN 1434-2:2022, SIST EN 1434-2:2016, SIST EN 1434-2:2016/oprA1:2017, SIST EN 1434-2:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 1434-2:2016+A1:2019 is associated with the following European legislation: EU Directives/Regulations: 2014/32/EU; Standardization Mandates: M/441, M/541. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase SIST EN 1434-2:2016+A1:2019 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Thermische Energiemessgeräte - Teil 2: Anforderungen an die KonstruktionCompteurs d'énergie thermique - Partie 2 : Prescriptions de fabricationThermal energy meters - Part 2: Constructional requirements17.200.10Toplota. KalorimetrijaHeat. CalorimetryICS:Ta slovenski standard je istoveten z:EN 1434-2:2015+A1:2018SIST EN 1434-2:2016+A1:2019en,fr,de01-marec-2019SIST EN 1434-2:2016+A1:2019SLOVENSKI
STANDARDSIST EN 1434-2:20161DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1434-2:2015+A1
November
t r s z ICS
s yä t r rä s r English Version
Thermal energy meters æ Part
tã Constructional requirements Compteurs d 5énergie thermique æ Partie
t ã Prescriptions de fabrication
Wärmezähler æ Teil
tã Anforderungen an die Konstruktion This European Standard was approved by CEN on
w September
t r s w and includes Amendment
s approved by CEN on
s z July
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
t r s z 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 ªA sã t r s z ESIST EN 1434-2:2016+A1:2019
Relationship between this European Standard and the essential requirements of Directive2014/32/EU aimed to be covered . 39 Bibliography . 40
1) EN 1434-3 is maintained by CEN/TC 294. SIST EN 1434-2:2016+A1:2019
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+A1:2019
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 mm for Pt1000 Alternative lengths B C (head probe only) 85 105 120 140 210 230 Figure 2 — Temperature probes type DL (head or cable) 4.2.5 Dimensions of pocket mounted long probes - Type PL The dimensions shall be as given in Figure 3. Further information is given in Annex A, Figures A.4 and A.5. The qualifying immersion depth shall be 50 % of the length B for the shortest pocket specified – or less if so specified by the manufacturer. 4.2.6 Dimensions of temperature pocket The temperature pocket is designed for use with type PL temperature probes only. It is designed to be capable of being inserted through a pipe wall to which has been externally brazed or welded a boss (see Annex A, Figure A.9) and in this respect only, it is interchangeable with a direct mounted long probe of corresponding insertion length. The dimensions shall be as given in Figure 4. SIST EN 1434-2:2016+A1:2019
Key A < 30 mm or
¶ 50 mm for Pt 1000
Alternative lengths B (head probe only) 105 140 230
1 temperature sensing element 3 outline of permanently connected signal lead probe 2 outline of head probe 4 inlet for signal cable – ø
¶ 9 mm Corresponding to c11 in EN ISO 286-2, rounded to 2 decimals Figure 3 — Temperature probes - Type PL (head or cable) SIST EN 1434-2:2016+A1:2019
Key 1 sealing face 2 probe clamping screw with provision for security sealing
a Corresponding to H11 in EN ISO 286-2 rounded to 2 decimals G ½ B thread in accordance with EN ISO 228-1 Alternative lengths C D 85
¶ 100 120
¶ 135 210
¶ 225 Figure 4 — Temperature pocket 4.2.7 Design of short probes with respect to installation The sensor shall be mounted perpendicular to the flow and with the sensing element inserted to at least the centre of the pipe. For internal pressures up to 16 bar, the sensor shall be designed to fit in a pipe fitting (see Annex A, Figure A.7). SIST EN 1434-2:2016+A1:2019
Key R1 temperature sensing element resistance 1 temperature sensing element R2 internal wire resistance 2 protective sheath R3 signal lead resistance 3 mounting thread
4 signal leads Figure 5 — Temperature probe with permanently connected signal leads SIST EN 1434-2:2016+A1:2019
Key R1 temperature sensing element resistance 1 temperature sensing element R2 internal wire and terminals resistance 2 protective sheath
3 mounting thread
4 signal leads Figure 6 — Head sensor temperature probe 4.3.2 Resistance characteristics The calibration of temperature sensors shall be traceable to national temperature standards. The intermediate values of the !thermal energy meter" temperature sensor shall be interpolated using Formula (1) as follows: ()2t01ABRRtt=++=(1)=where=Rt is the resistance value at temperature t in - see Figures 5 and 6); R0 is the resistance value at temperature 0
A is 3,908 3 × 10-3 °C-1; B is -5,775 × 10-7 °C-2. NOTE It is assumed that the national temperature standards are established with reference to ITS-90 - The International Temperature Scale of 1990. 4.3.3 Signal leads For signal leads, leads with strands can be used, or in the case of head probes, solid wires. The lead ends shall be precisely trimmed, if strands are used (e. g. by lead end sleeves). Solder-coating of the lead ends to prevent splicing is not permissible. A soldered joint to connect the temperature probe signal lead to the calculator is only permitted in the case of non-interchangeable temperature probes. For screened cables for temperature sensors there shall be no connection between the screen and the protecting sheet. SIST EN 1434-2:2016+A1:2019
Àä 4.3.5 Temperature sensors for the 4-wire method If the cable length requirements in 4.3.4 cannot be fulfilled, the 4-wire method shall be used. The connections shall be clearly identifiable so that they cannot be confused. A cross-section of 0,5 mm2 is recommended for head sensors and a minimum cross-section of 0,14 mm2 for cable sensors. 4.3.6 Thermal response time The manufacturer shall declare the temperature sensor response time 0,5 as defined in EN 60751:2008, 6.5.2 using the test method in EN 60751:2008, 4.3.3.3. 4.4 Other temperature sensors Other types of temperature sensors are permissible, but shall be tested as part of the calculator. SIST EN 1434-2:2016+A1:2019
1,0 130 G ¾ B 15 190 G 1 B 20 110 G ¾ B 1,5 165 G ¾ B 15 190 G 1 B 20 110 G ¾ B 2,5 190 G 1 B 20
130 G 1 B 3,5 260 G 1 ¼ B 25
150 G 1 ¼ B 6,0 260 G 1 ½ B 32 260 G 1 ¼ B 25 150 G 1 ¼ B 10 300 G 2 B 40
200 G 2 B 15 300
50 270
25 300
40 350
80 300
60 350
100 360
100 350
150 500
250 500
400 600
To achieve the necessary overall length adaptor pieces can be fitted. The adjacent lengths larger or smaller than the preferred lengths may be adopted for qp
· 10 m3/h. Tolerances on the overall length shall be: — up to 300 mm 02−=mm;=—=from=350=to=600=mm=03−=mm.=Threaded=connection=SIST EN 1434-2:2016+A1:2019
Range of size and minimum thread lengths in mm
Figure 7 — Outline of the dimensions a and b in Table 4 5.3 Test signal output For test purposes, it is required that either high resolution pulses using an adaptor according to Annex B shall be provided, or data from a data interface, as described in EN 1434-3, using an adapter (if necessary) shall be employed. The discrimination of these test outputs shall be such, that in a test at qi (defined in !EN 1434-1:2015+A1:2018, 5.3.3"), the measurement error resulting from the number of pulses is not greater than 0,8 %, and the test period of 1 h for sizes qp < 10 m3/h or 1,5 h for qp
· 10 m3/h, is not exceeded. The nominal relationship between the signal emitted and the quantity measured shall be declared by the manufacturer. Output names used at pulse output connections are given in Annex B. For flow sensors having data test interface only (without high resolution pulse outputs), at least the following data shall be available: Unique meter ID and volume register. 5.4 Adjusting device The flow sensor may be fitted with an adjustment device making it possible to correct the relationship between the indicated and the true value. Thread a b G ¾ B 10 12 G 1 B 12 14 G 1 ¼ B 12 16 G 1 ½ B 13 18 G 2 B 13 20 SIST EN 1434-2:2016+A1:2019
¶ 5 m. The change in contact resistance with time shall be < 5 m; e) to ensure best performance and measurement stab
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The article discusses the European standard SIST EN 1434-2:2016+A1:2019, which outlines the specifications for thermal energy meters. These meters are used to measure the amount of energy absorbed or given up by a liquid in a heat-exchange circuit. The standard focuses on the constructional requirements of these meters and does not cover electrical safety, pressure safety, or surface mounted temperature sensors. Additionally, it specifies that the meters are intended for use in closed systems with limited differential pressure over the thermal load.
기사 제목: SIST EN 1434-2:2016+A1:2019 - 열 에너지 측정기 - 파트 2: 구성 요건 기사 내용: 이 유럽 표준은 열 에너지 측정기의 구성 요건을 명시합니다. 열 에너지 측정기는 열 교환 회로에서 흡수되거나 방출되는 액체인 열 전달 액체의 에너지를 측정하는 도구입니다. 이 열 에너지 측정기는 법적 단위로 열의 양을 표시합니다. 이 유럽 표준은 전기적 안전 요건을 다루지 않습니다. 압력 안전 요건은 이 유럽 표준에서 다루지 않습니다. 표면 장착 온도 센서는 이 유럽 표준에서 다루지 않습니다. 이 표준은 열부하 위의 압력차가 제한된 폐쇄 시스템에 대한 측정기를 다룹니다.
記事のタイトル：SIST EN 1434-2:2016+A1:2019 - 熱量計 - 第2部：構造要件 記事の内容：この欧州規格は、熱量計の構造要件を規定しています。熱量計は、熱交換回路内で吸収（冷却）または放出（暖房）される液体である熱搬送液体のエネルギーを測定するための機器です。熱量計は、法定単位で熱の量を示します。 この欧州規格は、電気の安全性要件には適用されません。 圧力安全要件には適用されません。 表面取り付け温度センサーには適用されません。 この規格は、熱負荷の上の差圧が制限された閉回路システムのための計器をカバーしています
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