Water meters - Part 1: General requirements

This document applies to water meters intended for residential, commercial, light industrial and industrial use, and specifies the requirements and certification procedures for water meters, irrespective of the design technologies used to meter the actual volume of clean cold potable water or heated water, flowing through a fully charged, closed conduit. These water meters shall incorporate devices, which indicate the integrated volume.
This document also applies to water meters based on electrical or electronic principles, and to water meters based on mechanical principles incorporating electronic devices, used to meter the actual volume flow of cold potable water or heated water. It provides metrological requirements for electronic ancillary devices when they are subject to metrological control. As a rule the ancillary devices are optional. However national or international regulations make some ancillary devices mandatory in relation to the utilisation of the water meter.

Wasserzähler - Teil 1: Allgemeine Anforderungen

Dieses Dokument gilt für Wasserzähler, die für den Einsatz in privaten und gewerblichen Bereichen sowie im Bereich der Leichtindustrie und Industrie bestimmt sind. Es legt, ungeachtet der Technologie, die Anforderungen und Zertifizierungsverfahren für Wasserzähler fest, die zur Messung des tatsächlichen Volumens von sauberem, kaltem Trinkwasser oder erwärmtem Wasser, das durch eine voll gefüllte, geschlossene Leitung fließt, eingesetzt werden. Diese Zähler müssen mit Einrichtungen versehen sein, die das summierte Volumen anzeigen.
Dieses Dokument gilt ebenso für Wasserzähler nach elektrischem oder elektronischem Funktionsprinzip und für Wasserzähler nach mechanischem Funktionsprinzip mit elektronischen Einrichtungen, die zur Messung des tatsächlichen Durchflussvolumens von kaltem Trinkwasser oder erwärmtem Wasser dienen. Es legt messtechnische Anforderungen an elektronische Zusatzeinrichtungen fest, soweit diese messtechnisch zu überwachen sind. In der Regel sind Zusatzeinrichtungen nicht zwingend erforderlich. Jedoch werden in nationalen oder internationalen Regelungen einige Zusatzeinrichtungen für die Verwendung von Wasserzählern verbindlich vorgeschrieben.

Compteurs d'eau - Partie 1: Exigences générales

Vodomeri – 1. del: Splošne zahteve

General Information

Status
Withdrawn
Publication Date
10-Apr-2007
Withdrawal Date
05-Apr-2011
Current Stage
9960 - Withdrawal effective - Withdrawal
Due Date
16-Feb-2011

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Water meters - Part 1: General requirementsVodomeri – 1. del: Splošne zahteveCompteurs d'eau - Partie 1: Exigences généralesWasserzähler - Teil 1: Allgemeine AnforderungenTa slovenski standard je istoveten z:EN 14154-1:2005+A1:2007SIST EN 14154-1:2005+A1:2007en;fr;de91.140.60Sistemi za oskrbo z vodoWater supply systemsICS:SIST EN 14154-1:20051DGRPHãþDSLOVENSKI

STANDARDSIST EN 14154-1:2005+A1:200701-junij-2007
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14154-1:2005+A1
April 2007 ICS 91.140.60 Supersedes EN 14154-1:2005English Version
Water meters - Part 1: General requirements
Compteurs d'eau - Partie 1: Exigences générales

Wasserzähler - Teil 1: Allgemeine Anforderungen This European Standard was approved by CEN on 26 August 2004 and includes Amendment 1 approved by CEN on 6 March 2007.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations 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 Management Centre or to any CEN member.

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 Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36

B-1050 Brussels © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14154-1:2005+A1:2007: E

EN 14154-1:2005+A1:2007 (E) 2 Contents Page Foreword..............................................................................................................................................................4 1 Scope......................................................................................................................................................5 2 Normative references............................................................................................................................5 3 Terms and definitions...........................................................................................................................5 4 Technical characteristics....................................................................................................................12 4.1 Meter size and overall dimensions....................................................................................................12 4.1.1 Meter size..............................................................................................................................................12 4.1.2 Dimensions of in-line meters..............................................................................................................12 4.1.3 Dimensions of concentric meters......................................................................................................14 4.2 Meter and connections........................................................................................................................15 4.2.1 Connections interfaces.......................................................................................................................15 4.2.2 Threaded and connections.................................................................................................................15 4.2.3 Flanged connection.............................................................................................................................16 4.2.4 Connection for bolting in between flanges.......................................................................................16 4.2.5 Dimensions for manifold(s) for concentric meters..........................................................................16 4.3 Indicating device..................................................................................................................................16 4.3.1 General requirements..........................................................................................................................16 4.3.2 Types of indicating device..................................................................................................................18 4.3.3 Verification devices – First element – Verification scale interval...................................................18 4.4 Water meters which utilise electronic devices.................................................................................19 4.4.1 Checking facilities...............................................................................................................................19 4.4.2 Power supply........................................................................................................................................19 4.4.3 Correction device.................................................................................................................................21 4.4.4 Calculator.............................................................................................................................................21 4.4.5 Ancillary device....................................................................................................................................21 4.5 Materials and construction.................................................................................................................21 4.6 Protection against solid particles......................................................................................................22 4.7 Reverse flow.........................................................................................................................................22 4.8 Meter security and protection against fraud.....................................................................................22 4.8.1 Mechanical protection devices...........................................................................................................22 4.8.2 Electronic sealing devices..................................................................................................................22 5 Meter classification..............................................................................................................................23 5.1 Meter pressure classes.......................................................................................................................23 5.1.1 Admissible water pressure.................................................................................................................23 5.1.2 Internal pressure..................................................................................................................................23 5.1.3 Concentric meters...............................................................................................................................24 5.2 Meter temperature classes.................................................................................................................24 5.3 Flow profile sensitivity classes..........................................................................................................24 5.4 Pressure loss.......................................................................................................................................25 6 Marking.................................................................................................................................................26 7 Metrological characteristics...............................................................................................................27 7.1 Permanent flowrate (Q3).....................................................................................................................27 7.2 Measuring range..................................................................................................................................27 7.3 Relationship between permanent flowrate (Q3) and overload flowrate (Q4)................................28 7.4 The relationship between transitional flowrate (Q2) and minimum flowrate (Q1)........................28 7.5 Reference flowrate...............................................................................................................................28 7.6 Maximum permissible error................................................................................................................28 7.6.1 Sign of the error...................................................................................................................................28

EN 14154-1:2005+A1:2007 (E) 3 7.6.2 Relative error, εεεε....................................................................................................................................28 7.6.3 MPE lower flow range.........................................................................................................................28 7.6.4 MPE upper flow range.........................................................................................................................29 7.6.5 Maximum permissible errors in service............................................................................................29 7.6.6 Absence of flow...................................................................................................................................29 7.7 Meters with subassemblies................................................................................................................29 8 Meter performance requirements......................................................................................................30 8.1 Measurement error tests.....................................................................................................................30 8.2 Pressure tests......................................................................................................................................30 8.3 Pressure loss tests..............................................................................................................................30 8.4 Overload temperature tests................................................................................................................30 8.5 Climatic and mechanical environment..............................................................................................30 8.6 Electromagnetic environment............................................................................................................31 8.7 Static magnetic field............................................................................................................................31 8.8 Endurance............................................................................................................................................32 9 Metrological control............................................................................................................................32 9.1 Pattern approval..................................................................................................................................32 9.1.1 Extent of pattern approval..................................................................................................................32 9.1.2 Objective of pattern approval.............................................................................................................32 9.1.3 Number of meters to be tested..........................................................................................................33 9.1.4 Test verdict..........................................................................................................................................33 9.2 Initial verification.................................................................................................................................33 9.2.1 General.................................................................................................................................................33 9.2.2 Static pressure test.............................................................................................................................33 9.2.3 Error (of indication) measurements..................................................................................................33 9.2.4 Water temperature of tests.................................................................................................................34 Annex A (normative)

Checking facilities........................................................................................................35 A.1 Action of checking facilities...............................................................................................................35 A.2 Checking facilities for the measurement transducer......................................................................35 A.2.1 Pulse input solutions..........................................................................................................................35 A.2.2 Other technologies..............................................................................................................................36 A.3 Checking facilities for the calculator.................................................................................................36 A.3.1 Checking of correct functioning........................................................................................................36 A.3.2 Checking of the validity of calculations............................................................................................37 A.4 Checking facility for the indicating device.......................................................................................37 A.4.1 First possibility....................................................................................................................................37 A.4.2 Second possibility...............................................................................................................................38 A.5 Checking facilities for ancillary devices...........................................................................................38 A.6 Checking facilities for the associated measuring instruments......................................................38 Annex B (normative)

In-line meter dimensions (including alternative lengths).........................................39 Annex C (informative)

Table of rated operating, limiting and references conditions................................42 Annex D (informative)

Test program...............................................................................................................44 Annex ZA (informative)

!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 22/2004/EC on Measuring Instruments.........................................45 Bibliography......................................................................................................................................................55

EN 14154-1:2005+A1:2007 (E) 4 Foreword This document (EN 14154-1:2005+A1:2007) has been prepared by Technical Committee CEN/TC 92 “Water meters”, the secretariat of which is held by SNV. This document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2007 and conflicting national standards shall be withdrawn at the latest by October 2007. This document includes Amendment 1, approved by CEN on 2007-03-06. This document supersedes EN 14154-1:2005. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". This European Standard 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 this document. The standard consists of 3 parts. The other parts are:  Part 2: Installation and conditions of use  Part 3: Test methods and equipment In developing a new Standard, CEN/TC 92 aimed to harmonise it with existing standards and recommendations for water meters, to accommodate new technologies and anticipating the requirements of the Directive 22/2004/EC on Measuring Instruments. In respect of potential adverse affects on the quality of water intended for human consumption, caused by the product covered in this standard: 1. This standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU of EFTA; 2. It should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EN 14154-1:2005+A1:2007 (E) 5 1 Scope This document applies to water meters intended for residential, commercial, light industrial and industrial use, and specifies the requirements and certification procedures for water meters, irrespective of the design technologies used to meter the actual volume of clean cold potable water or heated water, flowing through a fully charged, closed conduit. These water meters shall incorporate devices, which indicate the integrated volume. This document also applies to water meters based on electrical or electronic principles, and to water meters based on mechanical principles incorporating electronic devices, used to meter the actual volume flow of cold potable water or heated water. It provides metrological requirements for electronic ancillary devices when they are subject to metrological control. As a rule the ancillary devices are optional. However national or international regulations make some ancillary devices mandatory in relation to the utilisation of the water meter. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1333:1996, Pipework components - Definition and selection of PN !EN 14154-2:2005+A1:2007", Water meters – Part 2: Installation and condition of use !EN 14154-3:2005+A1", Water meters - Part 3: Test methods and equipment EN ISO 228-1:2000, Pipe threads where pressure-tight joints are not made on the threads – Part 1: Dimensions, tolerances and designation (ISO 228-1:2000) EN ISO 6708:1995, Pipe components - Definition and selection of DN (nominal size) (ISO 6807:1995) ISO 3:1973, Preferred numbers - Series of preferred numbers ISO 7005-2:1988, Metallic flanges - Part 2: Cast iron flanges ISO 7005-3:1988, Metallic flanges - Part 3: Copper alloy and composite flanges 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 water meter (OIML R49-1:2000) an instrument intended to measure continuously, memorise and display the volume of water passing through it within rated operating conditions NOTE A meter includes at least a measurement transducer, a calculator (including adjustment or correction devices if present) and an indicating device. These three devices may be in different housings. 3.2 in-line meter (OIML R49-2:2001) a type of water meter fitted into a closed conduit by means of the meter end connections (either threaded or flanged) provided

EN 14154-1:2005+A1:2007 (E) 6 3.3 complete meter (OIML R49-2:2001) a meter which does not have separable measurement transducer (including flow sensor) and calculator (including indicating device) 3.4 combined meter (OIML R49-2:2001) a meter which has separable measurement transducer (including flow sensor) and calculator (including indicating device) 3.5 combination meter (ISO 7858-1:1998) an in-line type of water meter comprising one large flowrate meter, one small flowrate meter, and a changeover device that, depending on the magnitude of the flowrate passing through the meter, automatically directs the flow through either the small or large meter or both Meter reading is obtained from two independent totalizers or 1 totalizer which adds up the values from both water meters. 3.6 concentric meter (OIML R49-2:2001) a type of water meter fitted into a closed conduit by means of an intermediate fitting called a manifold. The inlet and outlet passages of the meter and the manifold, at the interface between them, are coaxial 3.7 concentric meter manifold (OIML R49-2:2001) the pipefitting specific to the connection of a concentric meter 3.8 measurement transducer (OIML R49-1:2000) a part of the meter which transforms the flow or the volume of the water to be measured into signals which are passed to the calculator. It can be based on a mechanical or an electrical or an electronic principle. It may be autonomous or use an external power source NOTE For the purposes of this document, the measurement transducer includes the flow sensor or volume sensor. 3.9 flow sensor or volume sensor (OIML R49-1:2000) that part of the water meter (such as a disc, piston, wheel, turbine element, or electromagnetic coil) which senses the flowrate or volume of water passing through the meter 3.10 calculator (OIML R49-1:2000) a part of the meter which receives the output signals from the transducer(s) and, possibly, from associated measuring instruments, transforms them and, if appropriate, stores the results in memory until they are used. In addition, the calculator may be capable of communicating both ways with ancillary devices 3.11 indicating device (OIML R49-1:2000) a part of the meter which displays the measurement results either continuously or on demand NOTE A printing device which provides an indication at the end of the measurement is not an indicating device.

EN 14154-1:2005+A1:2007 (E) 7 3.12 sub-assembly (OIML R49-2:2001) the measurement transducer, (including flow sensor) and the indicating device (including calculator) of a combined meter 3.13 adjustment device (OIML R49-1:2000) a device incorporated in the meter, that only allows the error curve to be shifted generally parallel to itself, with a view to bringing errors (of indication) within the maximum permissible errors 3.14 correction device (OIML R49-1:2000) a device connected to or incorporated in the meter for automatically correcting the volume at metering conditions, by taking into account the flowrate and/or the characteristics of the water to be measured (e.g. temperature and pressure) and the pre-established calibration curves. The characteristics of the water to be measured may either be measured using associated measuring instruments, or be stored in a memory in the instrument 3.15 ancillary device (OIML R49-1:2000) a device intended to perform a particular function, directly involved in elaborating, transmitting or displaying measurement results The main ancillary devices are:  zero setting device;  price indicating device;  repeating indicating device;  printing device;  memory device;  tariff control device;  pre-setting device; and  self service device. 3.16 associated measuring instruments (OIML R49-1:2000) instruments connected to the calculator, the correction device or the conversion device, for measuring certain quantities which are characteristic of water, with a view to making a correction and/or a conversion 3.17 primary indication indication, (displayed, printed or memorized), which is subject to legal metrological control 3.18 first element of the indicating device (OIML R49-1:2000) the element which, in an indicating device comprising several elements, carries the graduated scale with the verification scale interval 3.19 verification scale interval (OIML R49-1:2000) the lowest value scale division of the first element of the indicating device

EN 14154-1:2005+A1:2007 (E) 8 3.20 equipment under test (EUT) (OIML R49-2:2001) a complete water meter, a sub-assembly of a water meter or an ancillary device. 3.21 actual volume, Va (OIML R49-1:2000) total volume of water passing through the water meter, disregarding the time taken. This is the measurand 3.22 indicated volume, Vi (OIML R49-1:2000) volume of water indicated by the meter, corresponding to the actual volume 3.23 flowrate, Q (OIML R49-1:2000) quotient of the actual volume of water passing through the water meter and the time taken for this volume to pass through the water meter. It is expressed in m3/h 3.24 minimum flowrate, Q1 (OIML R49-1:2000) the lowest flowrate at which the water meter is required to operate within the maximum permissible error 3.25 transitional flowrate, Q2 (OIML R49-1:2000) flowrate which occurs between the permanent flowrate Q3 , and minimum flowrate Q1, that divides the flowrate range into two zones, the “upper zone” and the “lower zone”, each characterized by its own maximum permissible error 3.26 permanent flowrate, Q3 (OIML R49-1:2000) the highest flowrate within the rated operating conditions, at which the water meter is required to operate in a satisfactory manner within the maximum permissible error 3.27 overload flowrate, Q4 (OIML R49-1:2000) the highest flowrate at which the water meter is required to operate, for a short period of time, within its maximum permissible error, whilst maintaining its metrological performance when it is subsequently operated within its rated operating conditions 3.28 combination meter change-over flowrate, Qx (ISO 7858-1:1998) change-over flowrate Qx1 occurs at decreasing flowrates when the pressure drop in the combination meter increases suddenly in parallel with a cessation of flow in the larger meter and a visible increase in the flow in the smaller meter Change-over flowrate Qx2 occurs at increasing flowrates when the pressure drop in the combination meter decreases suddenly in parallel with a start-up of flow in the larger meter and a visible reduction in the flow in the smaller meter. 3.29 test flowrate (OIML R49-2:2001) the mean flowrate during a test, calculated from the indications of a calibrated reference device. The quotient of the actual volume passing through the water meter divided by the time for that volume to pass through the water meter 3.30 Maximum Permissible Error (MPE) (OIML R49-1:2000) extreme values of the relative error (of indication) of a water meter permitted by this document

EN 14154-1:2005+A1:2007 (E) 9 3.31 error of indication (VIM:1993, 5.20 adapted) indicated volume minus the actual volume 3.32 relative error, εεεε (VIM:1993, 3.12 adapted) error (of indication) divided by the actual volume 3.33 intrinsic error (OIML R49-1:2000) the error (of indication) of a meter determined under reference conditions 3.34 initial intrinsic error (OIML R49-1:2000) the intrinsic error of a water meter as determined prior to all performance tests 3.35 fault (OIML R49-1:2000) the difference between the error of indication and the intrinsic error of a water meter 3.36 significant fault (OIML R49-1:2000) a fault, the magnitude of which is greater than one half of the MPE in the upper zone EXAMPLE If the MPE is ± 2 %, the value of the significant fault is a fault which absolute value is larger than 1 %. The following are not considered to be significant faults:  faults arising from simultaneous and mutually independent causes in the water meter itself or in its checking facilities; and  transitory faults being momentary variations in the indication which cannot be interpreted, memorised or transmitted as a measurement result. 3.37 influence quantity (VIM:1993, 2.7) quantity that is not the measurand but that affects the result of measurement 3.38 influence factor (OIML R49-1:2000) influence quantity having a value within the Rated Operating Conditions (ROC) of the water meter, as specified in this document 3.39 disturbance (OIML R49-1:2000) an influence quantity having a value within the limits specified in this document, but outside the specified Rated Operating Conditions (ROC) of the water meter NOTE An influence quantity is a disturbance if for that influence quantity the Rated Operating Conditions are not specified. 3.40 Rated Operating Conditions (ROC) (VIM:1993, 5.5 adapted) conditions of use giving the range of values of the influence factors, for which the errors (of indication) of the water meter are required to be within the MPE For an influence quantity, the ranges of values within ROC are limited by Lower Rated Conditions (LRC) and Upper Rated Conditions (URC).

EN 14154-1:2005+A1:2007 (E) 10 3.41 Reference Conditions (RC) (VIM:1993, 5.7 adapted) set of reference values, or reference ranges of influence quantities, prescribed for testing the perform

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