1、BSI Standards PublicationBS EN 1434-4:2015Heat metersPart 4: Pattern approval testsBS EN 1434-4:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1434-4:2015.It supersedes BS EN 1434-4:2007 which is withdrawn.The UK participation in its preparation was entrus
2、ted to TechnicalCommittee CPI/30, Measurement of fluid flow in closed conduits.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correc
3、tapplication. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 84659 5ICS 17.200.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy C
4、ommittee on 30 November 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 1434-4:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1434-4 November 2015 ICS 17.200.10 Supersedes EN 1434-4:2007English Version Heat meters - Part 4: Pattern approval tests Compte
5、urs dnergie thermique - Partie 4: Essais en vue de lapprobation de modle Wrmezhler - Teil 4: Prfungen fr die Bauartzulassung This European Standard was approved by CEN on 5 September 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for gi
6、ving 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 of
7、ficial 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
8、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, Portugal, Romania, Slovakia, Slovenia, Spain
9、, Sweden, Switzerland, Turkey and United 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 any form and by any means reserved worldwide
10、for CEN national Members. Ref. No. EN 1434-4:2015 EBS EN 1434-4:2015EN 1434-4:2015 (E) 2 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 7 6.1 Rated operating conditions . 7 6.2
11、Reference conditions . 7 6.3 Reference values for the measurand, RVM 8 7 Tests and measurements . 8 7.1 General 8 7.2 Test programme 9 7.3 Uncertainty of test equipment and influences of EUT 11 7.4 Performance tests 11 7.5 Dry heat . 16 7.6 Cold 17 7.7 Static deviations in supply voltage 18 7.8 Dura
12、bility test 19 7.9 Damp heat . 22 7.10 Short time mains voltage reduction 24 7.11 Electrical transients 24 7.12 Electromagnetic field 26 7.13 Electromagnetic field specifically caused by digital radio equipment . 27 7.14 Radio frequency amplitude modulated . 28 7.15 Electrostatic discharge . 30 7.16
13、 Static magnetic field (fraud protection) 30 7.17 Mains frequency magnetic field 31 7.18 Internal pressure . 31 7.19 Pressure loss 31 7.20 Electromagnetic emission . 32 7.21 24 h interruption in the mains power supply voltage 32 7.22 Flow disturbances 33 7.23 Vibration/mechanical shock 33 8 Document
14、ation 34 Annex A (informative) Testing procedure for temperature sensor pairs with pockets and without pockets 35 A.1 Test set-up 35 A.2 Test sequence 37 A.3 Calculations 37 Annex B (informative) Checklist for type approvals of heat meters according to EN 1434 . 38 BS EN 1434-4:2015EN 1434-4:2015 (E
15、) 3 Annex C (informative) Criteria for a fully developed flow profile . 52 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2004/22/EC, MID 53 Bibliography . 54 BS EN 1434-4:2015EN 1434-4:2015 (E) 4 European foreword This document (EN
16、1434-4:2015) 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 May 2016, and conflicting n
17、ational 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 rights. This document supersed
18、es EN 1434-4:2007. 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(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of th
19、is 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, operational monitoring and
20、 maintenance In comparison to EN 1434-4:2007, the following changes have been made: metrological requirements for smart metering applications are added; additional functionalities for smart metering applications are added; cooling meters are added; influences of sensors are added; tests for cooling
21、applications and for fast response meters are added; test for additional functionalities for smart metering applications, e.g. internal clock, external digital signal, absolute temperature are added; calculator with single temperature sensor are added; 1) EN 1434-3 is maintained by CEN/TC 294. BS EN
22、 1434-4:2015EN 1434-4:2015 (E) 5 test for communication interfaces, endurance test for flow sensors and accelerated durability test are added; electromagnetic field caused by digital radio equipment; static magnetic field; test procedure for temperature sensor pairs with pockets and without pockets.
23、 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 Yugoslav Republic of Macedonia, France, Ge
24、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1434-4:2015EN 1434-4:2015 (E) 6 1 Scope This European Standard specifies pattern
25、 approval tests 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 heat in legal units. Electrical safety re
26、quirements 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 t
27、hermal 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 docum
28、ent (including any amendments) applies. EN 1434-1:2015, Heat meters Part 1: General requirements EN 55022, Information technology equipment Radio disturbance characteristics Limits and methods of measurement (CISPR 22:2008) EN 60068-2-1, Environmental testing Part 2-1: Tests - Test A: Cold (IEC 6006
29、8-2-1) EN 60068-2-2, Environmental testing Part 2-2: Tests - Test B: Dry heat (IEC 60068-2-2) EN 60068-2-30, Environmental testing Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle) (IEC 60068-2-30) EN 60751:2008, Industrial platinum resistance thermometers and platinum temperature se
30、nsors (IEC 60751:2008) EN 61000-4-2, Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques Electrostatic discharge immunity test (IEC 61000-4-2) EN 61000-4-3, Electromagnetic compatibility (EMC) Part 4-3: Testing and measurement techniques Radiated, radio-frequency, electr
31、omagnetic field immunity test (IEC 61000-4-3) EN 61000-4-4, Electromagnetic compatibility (EMC) Part 4-4: Testing and measurement techniques Electrical fast transient/burst immunity test (IEC 61000-4-4) EN 61000-4-5, Electromagnetic compatibility (EMC) Part 4-5: Testing and measurement techniques Se
32、ction 5: Surge immunity test (IEC 61000-4-5) (IEC 61000-4-5) EN 61000-4-6:2014, Electromagnetic compatibility (EMC) Part 4-6: Testing and measurement techniques Immunity to conducted disturbances, induced by radio-frequency fields (IEC 61000-4-6:2013) EN 61000-4-8, Electromagnetic compatibility (EMC
33、) Part 4-8: Testing and measurement techniques Power frequency magnetic field immunity test (IEC 61000-4-8) BS EN 1434-4:2015EN 1434-4:2015 (E) 7 EN 61000-4-11, Electromagnetic compatibility (EMC) Part 4-11: Testing and measurement techniques Voltage dips, short interruptions and voltage variations
34、immunity tests (IEC 61000-4-11) EN ISO 4064-2, Water meters for cold potable water and hot water Part 2: Test methods (ISO 4064-2) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1434-1:2015 apply. 4 General The procedure shall ascertain that the patt
35、ern conforms to the metrological requirements of this European Standard. In addition to the checking of the documentation (Clause 7) and the comparison of the pattern with the metrological requirements of this European Standard, the tests in Clause 6 shall be performed. It is recommended to use a ch
36、ecklist as in Annex B to report in a standardized way the result of the comparison between the patterns under approval with the essential requirements of this European Standard. 5 Requirements Under normal operating conditions, the error of heat meters or their sub-assemblies shall not exceed the ma
37、ximum permissible error, MPE specified in EN 1434-1. When heat meters or their sub-assemblies are exposed to disturbances, significant faults shall not occur. 6 Specification of operating conditions 6.1 Rated operating conditions The rated operating conditions are those given in Table 1. Table 1 Rat
38、ed operating conditions Environmental class A B C Ambient temperature in C +5 to +55 25 to +55 +5 to +55 Relative humidity in % DN 200, 7.19 shall be carried out at min. For each meter model the following tests shall be carried out on one size only: 7.5, 7.6, 7.7, 7.9, 7.10, 7.11, 7.12, 7.13, 7.14,
39、7.15, 7.16, 7.17, 7.20, 7.21 and 7.23. Tests of additional energy registers for smart metering functionalities: The accuracy of thermal energy accumulation into the additionally and independently energy registers shall be tested by energy performance tests according to 7.4. NOTE In applications of s
40、mart metering, one or both single sensors of the pair are used as additional single sensor. Additional tests for control quantities, the internal clock, external digital signal, single temperature sensors, calculators and calculators with single sensors shall be done according to requirements in EN
41、1434-1:2015, 5.10. It shall be tested that the specific MPE according to EN 1434-1:2015, 5.10.5 for tolerance quantities, used for threshold activation of additional energy accumulations will be met. The absence of software-interaction between all energy registers shall be proved in accordance with
42、the WELMEC Guide “7.2 Software”, respective latest edition. This shall be done for both directions of energy flow, in cases of delivered and absorbed energy (heat and cooling meter). Each additional register under test shall be activated by the corresponding control quantity. It shall be ascertained
43、 that the specific activated register content on display is corresponding to the changes of control quantity, as expected and by at least one totalizer energy increment. By metrological tests the accuracy of generating and processing, the accumulated energy values in dependency on the parameterisati
44、on of the corresponding control parameters shall be tested. By checking of the switch-on/off parameters, it shall be ascertained that the control quantity and the values thereof are indicated on display properly. The information on the display shall not deviate from the real measurement with respect
45、 to measurement conditions. 7.2 Test programme Samples of a heat meter, or its sub-assemblies, submitted for pattern approval, shall be subject to tests to verify their conformity with Clause 4. Unless otherwise stated, the tests shall be carried out at reference conditions and the samples shall be
46、exposed to the influence factors or disturbances specified for the respective tests, as stated in Table 3. The test sequence and the number of items used shall be either as described in Table 3 or as agreed between the manufacturer and the testing laboratory (assuming four samples, numbered by the t
47、esting laboratory). Only one influence quantity shall be applied at a time. If the meter under test (complete, combined or sub-assemblies) has test outputs for quantity of water, temperature difference and/or energy, these outputs can be used to test such parameters. BS EN 1434-4:2015EN 1434-4:2015
48、(E) 10 Table 3 Test programme for heat meters and their sub-assemblies Test Subclause Exposure Temperature sensor pair Flow sensor Calculating device Complete meter Item number Influence factors MPE 7.4 Performance test X X X X 2 MPE 7.5 Dry heat XaX X 2 MPE 7.6 Cold XaX X 2 MPE 7.7 Static deviation
49、s in supply voltage XaX X 2 Disturbances NSFa 7.8 Durability X X X 4 NSF 7.9.1 7.9.2 Damp heat, cyclic Damp heat, steady-state X XcXaXcX X X 1 1 NSF 7.10 Short time reduction in supply voltage X X X 3 NSFa 7.11 Electrical transients Xa,bXbX 3 NSFd 7.12 Electromagnetic field Xa,bXbX 3 NSFd 7.13 Electromagnetic field digital radio equipment Xa,bXbX 3 NSFd 7.14 Radio frequency, amplitude modulated Xa,bXbX 3 NSFa 7.15 Electrostatic discharge XaX X 3 NSFd 7.16 Static magnetic field X X X 3 NSF
