1、February 2016 English price group 17No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 17.200.10!%LS#“2414800www.din.d
2、eDIN EN 1434-1Heat meters Part 1: General requirements;English version EN 1434-1:2015,English translation of DIN EN 1434-1:2016-02Wrmezhler Teil 1: Allgemeine Anforderungen;Englische Fassung EN 1434-1:2015,Englische bersetzung von DIN EN 1434-1:2016-02Compteurs dnergie thermique Partie 1: Prescripti
3、ons gnrales;Version anglaise EN 1434-1:2015,Traduction anglaise de DIN EN 1434-1:2016-02SupersedesDIN EN 1434-1:2007-05www.beuth.deDocument comprises 3 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.902.16DIN EN 1434-1:2016-02
4、 2 A comma is used as the decimal marker. National foreword This document (EN 1434-1:2015) has been prepared by Technical Committee CEN/TC 176 “Heat meters” (Secretariat: SIS, Sweden). The responsible German body involved in its preparation was DIN-Normenausschuss Heiz- und Raumlufttechnik (DIN Stan
5、dards Committee Heating and Ventilation Technology), Working Committee NA 041-03-05 AA Wrmezhler (SpA zu CEN/TC 176). Amendments This standard differs from DIN EN 1434-1:2007-05 as follows: a) some special cases for combined cooling and heating meters have been added; b) additional functionalities f
6、or smart metering applications have been included; c) metrological requirements for smart metering applications have been added; d) definitions and requirements for cooling meters have been added; e) tariff meters have been added; f) terms, definitions and requirements for registration devices and c
7、ooling meters have been added; g) requirements for fast response meters have been specified (informative Annex C). Previous editions DIN 4713: 1980-12 DIN EN 1434-1: 1997-04, 2003-02, 2007-05 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1434-1 November 2015 ICS 17.200.10 Supersedes EN 1434-1
8、:2007English Version Heat meters - Part 1: General requirements Compteurs dnergie thermique - Partie 1: Prescriptions gnrales Wrmezhler - Teil 1: Allgemeine Anforderungen This European Standard was approved by CEN on 5 September 2015. CEN members are bound to comply with the CEN/CENELEC Internal Reg
9、ulations 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 mem
10、ber. 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.
11、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
12、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in
13、any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1434-1:2015 EEN 1434-1:2015 (E) 2 Contents Page European foreword . 4 1 Scope 6 2 Normative references 6 3 Terms and definitions . 6 4 Types of instruments 11 4.1 General . 11 4.2 Complete instrument 11 4.3 Combined i
14、nstrument . 11 4.4 Hybrid instrument . 11 4.5 Sub-assemblies of a heat meter, which is a combined instrument 11 4.5.1 General . 11 4.5.2 Flow sensor 12 4.5.3 Temperature sensor pair 12 4.5.4 Calculator 12 4.6 Equipment under test (EUT) 12 5 Rated operating conditions 12 5.1 Limits of temperature ran
15、ge 12 5.2 Limits of temperature differences . 12 5.3 Limits of flow rate 12 5.4 Limit of thermal power 13 5.5 Limits of working pressure (PS and Pmin) 13 5.6 Nominal pressure (PN) . 13 5.7 Limits in ambient temperature . 13 5.8 Limits in deviations in supply voltage 13 5.9 Maximum pressure loss . 13
16、 5.10 Specific requirements on registration devices 13 5.10.1 General . 13 5.10.2 Suitability 13 5.10.3 Rated operated conditions . 14 5.10.4 Indication 14 5.10.5 MPE 15 6 Technical characteristics 15 6.1 Materials and construction . 15 6.2 Requirements outside the limiting values of the flow rate .
17、 16 6.3 Display 16 6.4 Protection against fraud 16 6.5 Supply voltage . 17 6.6 Qualifying immersion depth of a temperature sensor . 17 6.7 The influence on a temperature sensor pair caused by mounting in pockets . 17 6.8 Reproducibility . 17 6.9 Repeatability 17 6.10 Software . 18 7 Specified workin
18、g range 18 7.1 General . 18 DINEN 1434-1:2016-02EN 1434-1:2015 (E) 3 7.2 Temperature difference . 18 7.3 Flow rate 18 8 Heat transmission formula . 18 9 Metrological characteristics (Maximum Permissible Error, MPE) . 19 9.1 General . 19 9.2 Values of maximum permissible errors . 19 9.2.1 Maximum per
19、missible relative errors of complete heat meters . 19 9.2.2 Maximum permissible relative error of sub-assemblies . 19 9.3 Application of maximum permissible errors . 20 10 Environmental classification 20 10.1 General . 20 10.2 Environmental class A (Domestic use, indoor installations) 21 10.3 Enviro
20、nmental class B (Domestic use, outdoor installations) . 21 10.4 Environmental class C (Industrial installations) 21 10.5 Mechanical classes M1 to M3 21 11 Heat meter specification 21 11.1 General . 21 11.2 Flow sensor . 21 11.3 Temperature sensor pair . 23 11.4 Calculator. 23 11.5 Complete meters .
21、25 12 Information to be made available by the manufacturer or supplier . 26 12.1 Installation instructions . 26 12.2 Parameter setting instructions 27 12.3 Adjustment instructions 28 12.4 Maintenance instructions 28 12.5 Hints for disposal instructions 29 Annex A (normative) Heat coefficient equatio
22、ns . 30 Annex B (normative) Flow conditioner package 32 Annex C (normative) Fast response meters . 34 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2004/22/EC, MID 35 Bibliography . 37 DINEN 1434-1:2016-02EN 1434-1:2015(E)4 European
23、 foreword This document (EN 1434-1:2015) has been prepared by Technical Committee CEN/TC 176 “Heat 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
24、 May 2016, and conflicting national standards shall be withdrawn at the latest by May 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent ri
25、ghts. This document supersedes EN 1434-1:2007. 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
26、an integral part of this document. EN 1434, Heat 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, oper
27、ational monitoring and maintenance In comparison to EN 1434-1:2007, the following changes have been made: special cases for combined cooling and heating meters are added; additional functionality for smart metering applications are added; metrological requirements for smart metering applications are
28、 added; definitions and requirements for the cooling meter are added; tariff meters are added; terms and definitions, requirements for registration devices and cooling meters are added; requirements for fast response meters are added (informative Annex C). 1) EN 1434-3 is maintained by CEN/TC 294. D
29、INEN 1434-1:2016-02EN 1434-1:2015(E)5 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugos
30、lav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DINEN 1434-1:2016-02EN 1434-1:2015(E)6 1 Scope Th
31、is European Standard specifies the general requirements for 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 h
32、eat 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, wh
33、ere 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, th
34、e latest edition of the referenced document (including any amendments) applies. EN 1434-2:2015, Heat meters Part 2: Constructional requirements EN 1434-4:2015, Heat meters Part 4: Pattern approval test EN 60751, Industrial platinum resistance thermometers and platinum temperature sensors (IEC 60751)
35、 EN 61010-1, Safety requirements for electrical equipment for measurement, control and laboratory use Part 1: General requirements (IEC 61010-1) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 response time 0,5time interval between the instan
36、t when flow or temperature difference is subjected to a specified abrupt change and the instant when the response reaches 50 % of the step value 3.2 fast response meter meter suitable for heat exchanging circuits with rapid dynamic variations in the exchanged heat Note 1 to entry: See also Annex C.
37、3.3 rated voltage Unvoltage of the external power supply required to operate the heat meter, conventionally the voltage of the AC mains supply 3.4 rated operating conditions conditions of use, giving the range of values of influence quantities, for which the metrological characteristics of the instr
38、ument are within the specified maximum permissible errors DINEN 1434-1:2016-02EN 1434-1:2015(E)7 3.5 reference conditions set of specified values of influence factors, fixed to ensure valid inter-comparison of results of measurements 3.6 influence quantity quantity, which is not the subject of the m
39、easurement, but which influences the value of the measurement and or the indication of the measuring instrument 3.7 influence factors influence quantity having a value within the rated operating conditions 3.8 disturbance influence quantity having a value outside the rated operating conditions 3.9 T
40、ypes of errors 3.9.1 error (of indication) indication of the measuring instrument minus the conventional true value of the measurand 3.9.2 intrinsic error error of a measuring instrument determined under reference conditions 3.9.3 initial intrinsic error error of a measuring instrument as determined
41、 once prior to performance tests and durability tests 3.9.4 durability error difference between the intrinsic error after a period of use and the initial intrinsic error 3.9.5 maximum permissible error MPE highest values of the error (positive or negative) permitted 3.10 Types of faults 3.10.1 fault
42、 difference between the error of indication and the intrinsic error of the instrument 3.10.2 transitory fault momentary variations in the indication, which cannot be interpreted, memorized or transmitted as measurements DINEN 1434-1:2016-02EN 1434-1:2015(E)8 3.10.3 significant fault fault greater th
43、an the absolute value of the MPE and not being a transitory fault Note 1 to entry: If the MPE is 2 % then the significant fault is a fault larger than 2 %. 3.11 reference values of the measurand RVM specified value of the flow rate, the outlet temperature and the temperature difference, fixed to ens
44、ure valid intercomparison of the results of measurements 3.12 conventional true value quantity value attributed by agreement to a quantity for a given purpose Note 1 to entry: A conventional true value is, in general, regarded as sufficiently close to the true value for the difference to be insignif
45、icant for the given purpose. EXAMPLE A true value is the heat coefficient according to Annex A. 3.13 meter model different sizes of heat meters or sub-assemblies having a family similarity in the principles of operation, construction and materials 3.14 electronic device device employing electronic e
46、lements and performing a specific function 3.15 electronic element smallest physical entity in an electronic device which uses electron hole conduction in semi-conductors, or electron conduction in gases or in a vacuum 3.16 qualifying immersion depth of a temperature sensor immersion depth over whic
47、h the sensor measures with an accurate temperature value Note 1 to entry: The conditions to define the qualified immersion depth are written in EN 1434-4:2015, 7.4.4.1. 3.17 self-heating effect increase in temperature signal that is obtained by subjecting each temperature sensor of a pair to a conti
48、nuous power dissipation of 5 mW when immersed to the qualifying immersion depth in a water bath, having a mean water velocity of 0,1 m/s 3.18 heat meter instrument intended for measuring the energy which in a heat-exchange circuit is absorbed (cooling) or given up (heating) by a liquid called the he
49、at-conveying liquid DINEN 1434-1:2016-02EN 1434-1:2015(E)9 3.19 meters other than for heating 3.19.1 cooling meter heat meter designed for cooling applications at low temperatures, normally covering the temperature range 2 C to 30 C and up to 20 K 3.19.2 bifunctional meters for change-over systems between heating and cooling instrument measuring heating and cooling energy in two separate registers Note 1 to entry: In other directives and requirements, bifunctional meters are called combined meters. Key No energy recording H
