1、C900.5-06(reaffirmed 2011)Heat meters Part 5: Initial verification testsLegalNoticeforStandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process approved by theStandards Council of Canada. This process brings together volunteers representi
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16、document constitutes your acceptance of the terms and conditions of this Legal Notice.CSA Standards Update ServiceC900.5-06September 2006Title: Heat meters Part 5: Initial verification testsPagination: 17 pages (CSA/1CSA/3 and 14 text)To register for e-mail notification about any updates to this pub
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18、y at www.csagroup.org/legal to find out how we protect your personal information.Blank pagePublished in September 2006 by Canadian Standards AssociationA not-for-profit private sector organization5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044Visit our O
19、nline Store at www.ShopCSA.caC900.5-06Heat meters Part 5: Initial verification testsCSA StandardC900.5-06 Heat meters Part 5: Initial verification testsCSA/2 Canadian Standards Association September 2006C900.5-06Heat meters Part 5: Initial verification testsCSA PrefaceThis is the first edition of CS
20、A C900.5, Heat meters Part 5: Initial verification tests, which is an adoption, with Canadian deviations, of the identically titled CEN (European Committee for Standardization) Standard EN 1434-5 (first edition, 1997-02), including amendment A1:2002. This Standard is considered suitable for use for
21、conformity assessment within the stated scope of the Standard.This Standard was reviewed for Canadian adoption by the CSA Technical Committee on Thermal Energy Meters, under the jurisdiction of the Strategic Steering Committee on Performance, Energy Efficiency, and Renewables, and has been formally
22、approved by the Technical Committee. A list of the members of the Technical Committee is available upon request.September 2006 Canadian Standards Association 2006All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission ofthe publisher. CE
23、N material is reprinted with permission. Inquiries regarding this CSA Standard should be addressed toCanadian Standards Association5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4000www.csa.caTo purchase CSA Standards and related publications, visit CSAs Onl
24、ine Store at www.ShopCSA.ca or call toll-free 1-800-463-6727 or 416-747-4044.C900.5-06 Heat meters Part 5: Initial verification testsSeptember 2006 Canadian Standards Association CSA/3Canadian deviations5.2 Temperature sensor pair5.2.1 Error in temperature differenceReplace the second paragraph with
25、 the followingThe immersion depth of the sensor under test shall be at least 90% of the total length.Blank pageBlank pageEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1434-5:1997/A1September 2002ICS 17.200.10English versionHeat meters - Part 5: Initial verification testsCompteurs dnergie thermiq
26、ue - Partie 5: Essais devrification primitiveWrmezhler - Teil 5: ErsteichungThis amendment A1 modifies the European Standard EN 1434-5:1997; it was approved by CEN on 1 July 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
27、 thisamendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning suchnational standards may be obtained on application to the Management Centre or to any CEN member.This amendment exists in three official versions (English, French,
28、 German). A version in any other language made by translation under theresponsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, F
29、inland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Bru
30、ssels 2002 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1434-5:1997/A1:2002 EEN 1434-5:1997/A1:2002 (E)2ContentspageForeword3Introduction .41 Amended clauses 4EN 1434-5:1997/A1:2002 (E)3ForewordThis document (EN 1434-5:1997/A1:200
31、2) has been prepared by Technical Committee CEN/TC 176 “Heatmeters“, the secretariat of which is held by DS.This Amendment to the European Standard shall be given the status of a national standard, either by publication ofan identical text or by endorsement, at the latest by March 2003, and conflict
32、ing national standards shall bewithdrawn at the latest by March 2003.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this Amendment to the European Standard: Austria, Belgium, Czech Republic,Denmark, Finland, Fr
33、ance, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway,Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN 1434-5:1997/A1:2002 (E)4IntroductionThis amendment to EN 1434-5 is divided into 2 main areas. The first being the new clauses i.e. clauses which areno
34、t present in the 1997 version. The second being the amended clauses, where the entire clause not only thechanges is presented.It has been prepared in such a way that it can be cut and pasted into the old version.A new descriptor has been added: cooling meters.1 Amended clausesNEW TEXT1 ScopeThis Eur
35、opean Standard applies to heat meters, that is to instruments intended for measuring the heat which, in aheat-exchange circuit, is absorbed or given up by a liquid called the heat-conveying liquid. The heat meterindicates the quantity of heat in legal units.Electrical safety requirements are not cov
36、ered by this standard.Pressure safety requirements are not covered by this standard.Surface mounted sensors are not covered by this standard.Part 1 specifies general requirements.NEW TEXT5.1 Flow sensorsThe verification of the flow sensor shall be carried out within each of the following flow-rate r
37、anges at a watertemperature of (50 5) C for heating applications and (15 5) C for cooling applicationsa) qiq 1,1 qib) 0,1 qpq 0,11 qpc) 0,9 qpq 1,0 qpIf the pattern approval certificate so provides, the verification may be carried out with cold water in accordance withthe procedures laid down in the
38、 certificate.When testing the flow sensors, the guidelines in the pattern approval certificate shall be followed (e.g. requirementsfor water conductivity, water temperature, straight inlet/outlet tubes etc.).EN 1434-5:1997/A1:2002 (E)5NEW TEXT5.2.1 Error in temperature differenceThe individual tempe
39、rature sensors of the temperature sensor pair shall be tested, without their pockets, in thesame temperature bath at temperatures within each of the three temperature ranges in Table 1.Table 1 - Test temperature rangesNo.For minTest temperature rangeHeating Cooling1 20 C minto min+ 10 K 0 to 10 C20
40、C 35 to 45 C2 All min75 to 85 C 35 to 45 C3 All minmax- 30 K to max75 to 85 CNOTE If specified in the pattern approval certificate, variations in the temperatureranges and the number of temperatures are permissibleThe immersion depth of the temperature sensors shall not be less than the minimum imme
41、rsion depth.The determined resistance values shall be used in a system of three equations to calculate the three constants ofthe temperature/resistance equation of EN 60751 and a curve shall be drawn through the three test points.Thereby the characteristic curve for the temperature sensor is known.T
42、he “ideal“ curve using the standard constants of EN 60751, shall be generated. To give the error at anytemperature, the “ideal“ curve shall be subtracted from the characteristic curve for each temperature sensor.As a further step, the worst case error of the temperature sensor pair shall be determin
43、ed over the temperaturerange and over the temperature difference range specified for the sensors.For return temperatures above 80 C, only temperature differences over 10K shall be taken into account.The error determined as described above shall be within the limits stated in 9.2.2.2 of EN 1434-1:199
44、7.When measuring resistance, the current shall be such, that the power dissipation does not exceed 0,2 mW RMS.NEW TEXT5.3 CalculatorThe calculator shall be tested, at least within each of the following temperature difference ranges:For heating applications:a) min1,2 minb) 10 K 20 Kc) max- 5 K maxEN
45、1434-5:1997/A1:2002 (E)6For cooling applications:a) min1,2 minb) 0,8 maxmax but 15 KThe simulated flow rate signal shall not exceed the maximum acceptable by the calculator.The return temperature shall be in the temperature range between 40 C and 70 C for heating applications and(20 5) C for cooling
46、 applications, if not otherwise stated in the pattern approval certificate.To enable rapid testing of the calculator, it is customary to by-pass the indicating device of the heat meter.However, for at least one test, the meters indicating device shall be included.NEW TEXT5.6 Complete meterThe verifi
47、cation of the complete meter shall be carried out, at least within each of the following rangesFor heating applications:a) min1,2 minand 0,9 qp q qpb) 10 K 20 K and 0,1 qp q 0,11 qpc) max- 5 K maxand qi q 1,1 qiFor cooling applications:a) min1,2 minand 0,9 qp q qpb) max- 5 K maxand qi q 1,1 qiThe re
48、turn temperature shall be in the temperature range between 40 C and 70 C for heating applications and(20 5) C for cooling applications, if not otherwise stated in the pattern approval certificate.I consent to CSA collecting and using the above information to facilitate the collection of my suggestio
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