EN 14154-2:2005

Water meters - Part 2 : Installation and conditions of use

This document specifies criteria for selection of water meters, installation requirements and the first operation of new or repaired meters to ensure accurate constant measurement and reliable reading of the meter.
In applications where a water meter is legally required to conform to the requirements of the Measuring Instruments Directive, this document may be used to demonstrate conformity.
Where legal national requirements exist they shall in all cases take precedence over or supplement the specifications given in this part of this document.

Wasserzähler - Teil 2: Einbau und Voraussetzungen für die Verwendung

Dieses Dokument legt Kriterien für die Auswahl von Wasserzählern, Bedingungen für deren Einbau und die Inbetriebnahme von neuen oder reparierten Zählern fest, um eine genaue konstante Messung und zuverlässige Ablesung der Zähler zu gewährleisten.
Bei Anwendungen, bei denen gesetzlich gefordert wird, dass ein Wasserzähler den Anforderungen der EU-Messgeräterichtlinie MID entspricht, kann das vorliegende Dokument als Konformitätsnachweis verwendet werden.
Dort, wo gesetzliche nationale Anforderungen vorliegen, haben sie auf alle Fälle Vorrang vor den Bestimmungen dieses Teils des vorliegenden Dokuments, oder sie bilden eine Ergänzung dazu.

Compteurs d'eau - Partie 2: Installation et conditions d'utilisation

Vodomeri – 2. del: Napeljava in pogoji uporabe

General Information

• Status: Withdrawn
• Publication Date: 22-Feb-2005
• Withdrawal Date: 10-Apr-2007
• ICS: 91.140.60 - Water supply systems
• Technical Committee: CEN/TC 92 - Test methods and equipment for cold water meters
• Drafting Committee: CEN/TC 92 - Test methods and equipment for cold water meters
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 11-Apr-2007
• Completion Date: 11-Apr-2007
• Ref Project: SIST EN 14154-2:2005 - Water meters - Part 2 : Installation and conditions of use

Relations

• Merged Into: EN 14154-2:2005+A1:2007 - Water meters - Part 2: Installation and conditions of use
• Effective Date: 22-Dec-2008

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Water meters -
Part 2 : Installation and conditions of useVodomeri – 2. del: Napeljava in pogoji uporabeCompteurs d'eau - Partie 2: Installation et conditions d'utilisationWasserzähler - Teil 2: Einbau und Voraussetzungen für die VerwendungTa slovenski standard je istoveten z:EN 14154-2:2005SIST EN 14154-2:2005en91.140.60Sistemi za oskrbo z vodoWater supply systemsICS:SLOVENSKI
STANDARDSIST EN 14154-2:200501-maj-2005

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14154-2February 2005ICS 91.140.60English versionWater meters -
Part 2 : Installation and conditions of useCompteurs d'eau - Partie 2: Installation et conditionsd'essaiWasserzähler - Teil 2: Einbau und Voraussetzungen für dieVerwendungThis European Standard was approved by CEN on 26 August 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14154-2:2005: E

2 Contents Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Criteria for the selection of water meters.5 4.1 General considerations.5 4.2 Information to be provided by the manufacturer.5 4.3 Meters operating in parallel or in a group.5 5 Installation requirements.6 5.1 Compliance with specified metrological characteristics.6 5.1.1 General.6 5.1.2 Meter operating position.6 5.1.3 Hydraulic disturbances.7 5.1.4 Water quality (suspended particles).8 5.1.5 Electromagnetic meters.8 5.1.6 Meters operating in parallel or in a group.9 5.2 Protection of the meter.9 5.2.1 General considerations.9 5.2.2 Frost.9 5.2.3 Shock or vibration either transmitted from or induced by the installation.9 5.2.4 Reverse water flow.10 5.2.5 Installation induced stress and unbalance.10 5.2.6 Intentional fraud.10 5.3 Safety of personnel and users.10 5.3.1 General.10 5.3.2 Pipework anchoring.10 5.3.3 Manhole installation.10 5.3.4 Installations Requirements for pipes greater than DN 40.11 5.3.5 Protection against hazard related to electrical installations.11 5.4 Comfort of personnel.11 5.4.1 Access to the water meter and fittings.11 5.4.2 Associated fittings.12 5.5 Ease of reading.12 6 First operation of new or repaired water meters.13 6.1 General considerations.13 6.2 Meters operating in parallel or in group.13 Annex A (informative)
Examples of Concentric Manifold Solutions.14 Bibliography.16

4 1 Scope This document specifies criteria for selection of water meters, installation requirements and the first operation of new or repaired meters to ensure accurate constant measurement and reliable reading of the meter. In applications where a water meter is legally required to conform to the requirements of the Measuring Instruments Directive, this document may be used to demonstrate conformity. Where legal national requirements exist they shall in all cases take precedence over or supplement the specifications given in this part of this document. 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 14154-1, Water meters – Part 1 : General requirements. 3 Terms and definitions For the purpose of this document, the following terms and definitions apply. 3.1
parallel operation operation of two or more meters grouped together and connected to a common source and a common delivery. 3.2
multiple meter operation operation of several meters grouped together where their inlets are connected to a common source, or their outlets to a common delivery, but not both at same time. NOTE examples of the use of meters operating in parallel or multiple meter operation:  water meters operated in parallel where the installation of one large meter, to meet the maximum water demand or to cover the required flowrate range, is impractical;  water meters installed in parallel where "stand by" meters are necessary to ensure continuity of delivery and flow measurement in the case of filter blockage or water meter breakdown;  meters grouped in multiple operation for ease of access, servicing and reading or where it is necessary to split the water supply into a number of branches. For instance, in a block of flats or where a number of separately metered tributary flows are united into a common main, as in a water treatment plant.

 combination meters, care should be taken that 'cross-over' flowrates are different from (and below) normal operating flowrates;  available supply pressure;  physical and chemical characteristics of the water;  possibility of deposition of substances from solution within the water meter;  acceptable pressure loss across the meter;  available space and pipe work to install the meter and fittings;  sustainability of the power supply of the water meter (where applicable). 4.2 Information to be provided by the manufacturer The manufacturer shall supply sufficient information to enable the correct choice and installation of a meter: such that influencing factors shall not lead to either failure or non conformance with the specified metrological characteristics. This is particularly important for hydraulic disturbances. Specifically, the manufacturer shall determine the influence factors, which affect the indicating error and state of the individual meter design. For each influence factor the manufacturer shall state the relevant rated operating conditions applicable to the meter. 4.3 Meters operating in parallel or in a group For meters operating in parallel, means shall be provided so that the unserviceability of one or more meters within a group shall not cause the remaining meters to operate at a flowrate in excess of each individual meter’s limit of operation. In order to ensure that water meters of different types will operate satisfactorily in parallel, the individual characteristics of all the meters operating in parallel shall be compatible. This may be achieved, for example, by grouping them according to pressure loss, flowrate range and maximum working pressure. However, the installation conditions for each type shall be respected. For meters operating in parallel and multiple meter operation, the possibilities of interaction between one meter or meter type and another, to the detriment of their life and accuracy shall be considered; for example pressure surges and vibration.

6 5 Installation requirements The installation characteristics of the selected meter and its sub-assemblies shall ensure:  correct metering in compliance with its specific metrological characteristics;  protection of the meter;  safety of personnel and user;  comfort of personnel during installation, removal and maintenance of the meter;  easy reading of the meter index and relevant markings both by personnel and users. 5.1 Compliance with specified metrological characteristics 5.1.1 General The water meter shall be so installed that it is completely filled with water under normal conditions. Installation at a high point, leading to a risk of air accumulation, shall therefore be forbidden. If an entry of air is liable to occur which can either damage the water meter or alter its accuracy, an air eliminating device shall be placed at a sufficient distance upstream of the meter. The following influence quantities shall be taken into consideration when installing the water meter: I. meter operating position; II. hydraulic disturbances;
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