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BSIThe European Standard EN 14154-2:2005, incorporating amendment A1:2007, has the status of a British Standard

ICS 91.140.60Water meters Part 2 : Installation and conditions ouseBRITISH STANDARD BS EN 14154-2:2005Incorporating amendment no. 1

BS EN 14154-2:2005

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BSIThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 June 2005

BSI 2007

ISBN 978 0 580 59201 0Amendments issued since publication

Amd. No. Date Comments

17172 29 June 2007 Implementation of CEN amendment A1:2007request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National foreword

This British Standard is the UK implementation of EN 14154-2:2005, incorporating amendment A1:2007. It supersedes BS ISO 4064-2:2001 and BS ISO 7858-2:2000 which are withdrawn.The UK participation in its preparation was entrusted by Technical Committee CPI/30, Measurement of fluid flow in closed conduits, to Subcommittee CPI/30/7/1, Water meters.A list of organizations represented on this subcommittee can be obtained on

EUROPEAN STANDARD

NORME EUROPENNE

EUROPISCHE NORM

EN 14154-2:2005+A1

April 2007

ICS 91.140.60 Supersedes EN 14154-2:2005

English Version

Water meters - Part 2: Installation and conditions of use

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

Wasserzhler - Teil 2: Einbau und Voraussetzungen fr die Verwendung

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 C O M IT E U R O P E N DE N O R M AL IS A T I ON EUROPISCHES KOMITE E FR 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 14154-2:2005+A1:2007: E

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EN 14154-2:2005+A1:2007 (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.....................................................................................................................................11 5.3.3 Manhole installation ....................................................................................................................................11 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 Annex ZA (informative) !!!!Relationship between this European Standard and the Essential

Requirements of EU Directive 22/2004/EC on Measuring Instruments..................................................16 Bibliography ..............................................................................................................................................................19

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EN 14154-2:2005+A1:2007 (E)

3

Foreword

This document (EN 14154-2:2005+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 14154-2:2005.

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 1: General requirements

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 anticipate the requirements of the forthcoming EU Measuring Instruments Directive.

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.

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EN 14154-2:2005+A1:2007 (E)

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 14154-1:2005+A1", 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.

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EN 14154-2:2005+A1:2007 (E)

5

4 Criteria for the selection of water meters

4.1 General considerations

The type, metrological characteristics, size, and flowrate range of the meter are determined according to the operating conditions of the installation and the environmental class(es) demanded, taking into account the following conditions :

expected flowrates: the typical flowrates of the meter, as defined in !EN 14154-1:2005+A1", shall be compatible with the expected flowrate conditions of the installation; including the water flow direction or directions. When using

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 meters 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.

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EN 14154-2:2005+A1:2007 (E)

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;

III. water temperature;

IV. ambient relative humidity;

V. water pressure;

VI. transmission of vibrations;

VII. water quality (suspended particles);

VIII. electrostatic discharge;

IX. continuous magnetic field;

X. electromagnetic disturbances;

XI. any other relevant mechanical, chemical, climatic, electrical or hydraulic conditions.

The installation and environmental conditions shall be such that the water meter remains within its rated operating conditions for all influence quantities during the product lifetime specified by the manufacturer.

5.1.2 Meter operating position

The position and orientation of the water meter shall be appropriate to its type, as marked, and shall not change following installation. Where it can only be used in limited operating positions the manufacturer shall specify the positional limits within which the meter can operate satisfactorily in terms of:

angles of the pipe axis related to the horizontal;

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EN 14154-2:2005+A1:2007 (E)

7

permissible angular rotation of the meter about the pipe axis related to the vertical ; applicable where the meter is read from above, looking downward.

5.1.3 Hydraulic disturbances

5.1.3.1 General considerations

Many types of meters are sensitive to upstream flow disturbances, which cause large errors and premature wear. This comment also applies, although to a lesser extent, to downstream flow disturbances.

It should be realised that proper functioning of a particular design of water meter is related not only to its construction but to its specific installation conditions.

The installer shall comply with the manufacturers recommendations and, if applicable, the type approval certificate.

5.1.3.2 Types of disturbances

A flow can be subject to two types of disturbances: velocity-profile distortion and swirl; both of which may affect the errors of indication of the particular water meter.

Velocity-profile distortion is typically caused by an obstruction partially blocking the pipe, for instance the presence of a partly closed valve; a misaligned flange joint; an incorrectly positioned or dimensioned washer/gasket; a butterfly valve; an orifice; a flow or pressure regulator, etc

Swirl can be caused in many ways, for example by two or more bends in different planes; a single bend in combination with a reducer or partly closed valve; a centrifugal pump; a tangential inlet of supply line into the main line in which the water meter is installed.

5.1.3.3 Methods to eliminate disturbances

The circumstances leading to flow disturbances are by nature complex and too numerous to detail in this document. However, potential causes should be eliminated prior to the implementation of remedial devices such as flow straightening devices.

For example:

a) Velocity-profile distortion can easily be eliminated by careful application of installation procedures. This is particularly true in the case of coning down, abrupt section reduction and the mal-installation of joint washers/gaskets. In addition, when the water meter is in service, it is essential to ensure that the upstream and downstream valves remain in the fully open position. These valves require to be of a type which do not cause any disturbance to the water flow whilst in the open position;

b) Swirl can be controlled either by ensuring an adequate length of straight pipe upstream of the water meter, or by installing a straightening device, or by a combination of the two;

c) Swirl caused by two or more bends in different planes may be controlled by either installing the bends downstream or, when the bends are located upstream, moving them as far as possible from the water meter or by separating the bends as far as possible from each other;

d) Swirl caused by the connection of a minor feed to the main pipe work may be controlled by optimising the flow as shown in Figure 1. However, wherever possible, pipe work configurations which are known to generate swirl should be avoided.

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EN 14154-2:2005+A1:2007 (E)

8

Key a Bad b Good 1 Feed line 2 Main line

Figure 1

A compatible flow straightening device may be used upstream of the water meter to reduce or even eliminate the straight lengths of pipe detailed above. However, the instructions of the meter manufacturer shall be followed.

NOTE Special consideration should be given to bi-directional applications.

5.1.4 Water quality (suspended particles)

If, for the specific installation conditions, the accuracy of measurement of volume flow by the water meter is likely to be affected by the presence of suspended particles in the water, then it may be installed with a strainer or filter. The strainer or filter should be placed either at the inlet of the water meter or in the pipework upstream.

5.1.5 Electromagnetic meters

To ensure accurate measurement and prevent galvanic corrosion at the electrodes the meter and the measured fluid shall be electrically connected at the same potential. Whilst in general this means grounding the water, the manufacturers individual installation instructions for a particular meter design shall be followed.

On a conducting but uninsulated fluid pipe, without a non-conducting internal coating, the connecting point(s) of the meters primary element shall be electrically linked to the secondary element and both connected to ground.

On non-conducting pipes, or pipes isolated from the fluid, metal grounding rings shall be interposed between the pipe and the primary element of the meter. These shall be electrically linked to the secondary element and both to ground.

Where the fluid cannot be grounded for technical reasons, the meter may be connected without referencing the fluid potential but only when the meter model and manufacturers instructions permit.

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EN 14154-2:2005+A1:2007 (E)

9

5.1.6 Meters operating in parallel or in a group

Means shall be provided to permit installation, reading, servicing, in situ dismantling and removal of any meter without interference from, or interfering with, the operation of any other parallel or group meter.

For multiple meter operation, with common outlet, check valves shall be installed, downstream of each meter, to prevent back flow through the meter.

For multiple meter operation means shall be provided immediately adjacent to, or affixed on, each water meter, to identify the source or delivery, which each water meter is registering.

5.2 Protection of the meter

5.2.1 General considerations

The meter shall be protected from the risk of damage that may be caused by :

a) frost;

b) flooding or rain leaking in;

c) shock or vibration either transmitted from or induced by the installation;

d) reverse water flow;

e) adverse hydraulic conditions (cavitation, overpressure, water hammer);

f) excessive water or ambient air temperatures;

g) damp heat and dry heat;

h) installation induced stress and unbalance;

i) external electrolytic or environmental corrosion;

j) intentional fraud;

k) electromagnetic disturbances;

l) electrostatic discharge;

m) electrical bursts;

n) short time power reduction;

o) power voltage variation;

p) sinusoidal vibration.

5.2.2 Frost

Special arrangements shall be made to avoid freezing of the water meter but without restricting access. Insulating materials, where applied, shall be rot-proof.

5.2.3 Shock or vibration either transmitted from or induced by the installation

Special arrangements shall be made to ensure that the meter is not affected by vibration in accordance with the manufacturer's specifications.

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EN 14154-2:2005+A1:2007 (E)

10

Potential causes of vibration should be eliminated prior to the installation of the water meter. However, when necessary, flexible joints may be provided on the pipe work. For large meters (typically 150 mm and above), blocks and anchor stops shall be isolated from the groundwork by flexible footings.

5.2.4 Reverse water flow

The water meter shall be installed in accordance with both National Regulations and manufacturers instructions, where applicable.

Where national regulation(s) neither exist nor apply, protection against reverse water flow shall be provided when the type of meter installed is designed or specified to correctly meter in one direction only and where reverse flow could cause either (i) failure to comply with MPE or (ii) lead to the deterioration of the meter.

Where the meter design provides for correct metering of reverse flow without detriment, a reverse flow indicating device may be implemented as an alternative to protection. For example: in the case of a bi-directional electromagnetic meter.

In the case of commercial transactions, whenever the flow of water through the meter is required to be unidirectional, protection should consist of an approved anti-pollution non-return device: which may be incorporated into the meter drain valve or other associated fitting.

Protection against reverse flow may be incorporated into the design of the meter assembly.

5.2.5 Installation induced stress and unbalance

The water meter shall not be subjected to unbalanced or undue stresses: caused either by misalignment of pipes and fittings; by lack of adequate support; or by being mounted on misaligned supports.

5.2.6 Intentional fraud

For all commercial transactions a protective device for sealing the meter onto the inlet pipe shall be installed. This shall prevent the removal or the water meter, without the protecting device being visibly damaged.

Use of such protective devices may be implemented for non-commercial transactions, as appropriate.

5.3 Safety of personnel and users

5.3.1 General

It shall be a requirement that all installations conform with local and National Regulations in regard to Health and Safety: including Hazardous Area zoning as applicable.

It is therefore prohibited to install meters in hazardous locations. Furthermore, it is essential to avoid all installation conditions that could constitute a risk to the health of personnel or users.

Reasonable provision in regard to lighting, ventilation, non-slip surfaces, floor level changes and avoidance of obstructions shall be made.

For water meters of mass in excess of 25 kg, clear access shall be provided to the installation site, in order to allow the water meter to be brought to, or removed from, its working position. Additionally, adequate space shall be provided around the working position to allow for the installation of lifting gear.

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EN 14154-2:2005+A1:2007 (E)

11

5.3.2 Pipework anchoring

The pipework upstream and downstream shall be adequately anchored to ensure that no part of the installation can be displaced by water thrust; either during normal operation; during the period when the meter is dismantled ; or when the meter is disconnected on one side/flange.

5.3.3 Manhole installation

The manhole lid shall resist the ingress of water, shall be easy to manipulate by a single person and shall be specified to resist the loads encountered in the particular location.

When so required by the depth of the manhole, rungs with a handrail, or stairs for large chambers, shall be installed. The installation shall comply with all relevant Health and Safety Regulations.

5.3.4 Installations Requirements for pipes greater than DN 40

In all cases where the meter is not buried there shall be a minimum free space above the meter and its associated fittings equal to 700 mm.

5.3.5 Protection against hazard related to electrical installations

It shall be a requirement that all installations conform to local and National Regulations with regard to electrical Health and Safety: including Hazardous Area zoning and Earthing, as applicable.

In the case where the water meter is part of an electrical earth path, in order to minimise the risk to operational staff, there shall be a permanent shunt across the water meter and its associated fittings.

The use of water pipe connections as the grounding system for electrical installations is strictly prohibited. Such use implicitly creates hazards for the user and the personnel in charge of installing and maintaining connections, meters and associated fittings.

Whilst National Regulations shall always take precedent it is recommended that consideration be given to electrically isolating the water system inside a private installation from the water connection itself. This may require the interposition of an insulating length of at least two meters between the origin of any internal piping and the metallic accessory furthest downstream of the connection.

NOTE The installer should be aware that even when the electrical installation grounding is properly executed and independent from the water pipe connection, there may still be a danger to personnel working on the meter and its associated fittings. This is true in the following cases :

when there are equipotential links between the internal water system and the independent ground point;

when the user, as part of the current regulations in terms of electrical work, utilises drinking water conduits inside buildings, located after the meter, for connecting the various electrical equipment to the building ground.

5.4 Comfort of personnel

5.4.1 Access to the water meter and fittings

5.4.1.1 General considerations

The system, comprising the meter and associated fittings, should be capable of separation from the installation, including the pipe, in which it is installed. The installation, removal and replacement of the meter and its associated fittings shall be carried out without deterioration or removal of material from the construction and without having to displace any equipment or miscellaneous objects. This requires the presence of one or several disassembly joints.

For water meters weighing more than 40 kg, a suitable gangway, path, access road or similar shall be provided for bringing the meter to its installation point.

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EN 14154-2:2005+A1:2007 (E)

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Except in the case of in-line meters, which fit into specific metering pits or metering assemblies, sufficient clearance shall be provided between any side wall or obstacle and not less than one side of the installed water meter/associated fittings. This clearance is recommended to be at least one pipe diameter + 300 mm.

5.4.1.2 Installation in manholes

For installation in a manhole, the base of the manhole shall normally be above water.

The meter and its fittings shall be installed at a sufficient height above the base of the manhole to prevent any risk of contamination. If necessary, the manhole shall be equipped with a sump or drain to evacuate water.

The manhole should contain only the meter and its accessories.

The manhole shall be built of rot-proof materials offering sufficient mechanical strength.

5.4.2 Associated fittings

The upstream and downstream equipment to be installed will depend on operational conditions. The equipment should be specified and designed to avoid generating hydraulic conditions, which could adversely affect the performance of the water meter within its Rated Operating Conditions.

The water meter installation may therefore include the following fittings, as applicable:

Upstream :

stopcock or valve, with the flow direction and the direction of the valve opening and closing indicated;

filter, fitted between the stopcock / valve and the meter. Depending upon the installation requirements of the meter a flow straightening device and/or straight length(s) may be placed between the valve and/or the filter and the meter;

protective device, for sealing the meter onto the inlet pipe. This protective device shall prevent the removal of the water meter, without the protective device being visibly damaged.

Downstream :

adjustable length device to allow for easy installation and removal of the water meter;

the use of this device is intended to allow for replacement of the water meter by equipment of different models or sizes and to facilitate checking in-situ. Such an installation is recommended for meters having Q3 > 16 m3/h;

stopcock or valve for meters having Q3 > 4 m3/h; this valve shall operate in the same direction as the upstream valve;

approved anti-pollution non-return device, if required : which may be incorporated into the meter drain valve or other associated fitting;

device including a drain valve, which may be used for pressure monitoring, sterilisation and water sampling.

5.5 Ease of reading

The location of the meter and its indicating device shall enable Users and personnel to read directly the metered volume with ease: and, where implemented, other parameters such as flowrate, etc.

Ease of direct reading of the indicating device by the User shall be the primary consideration.

Where the meter indicating device is separated from the primary sensing element all requirements which apply to an integral indicating device shall be observed.

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13

Reading of the indicating device shall be possible at a distance not exceeding 1 m, within a cone of 30 degrees, relative to an axis passing through the meter and perpendicular to it.

The reading of the indicating device shall not require the use of a mirror.

Access to read the meter shall not require the use of a mobile ladder.

Where easy reading of the indicating device is required by both User and personnel but cannot be provided because of access or similar difficulties, the use of a remote reading technology to access the index shall be implemented.

6 First operation of new or repaired water meters

6.1 General considerations

Before installation, the water-main shall be flushed. All debris will be removed from the supply pipe and the surrounding area will be made clean and dry to prevent any possibility of debris entering the water meter or the supply pipe.

After installation, water shall be let into the main slowly and with air bleeds opened so that entrapped air does not cause the water meter to overspeed, thereby causing damage.

6.2 Meters operating in parallel or in group

When one or more water meters of a group commence operation, the possibility of reverse flow through other meters in the group. Means to avoid this situation shall be taken, for example by using control valves, non-return valves, etc.

Flow regulation devices, when required, shall be installed downstream of the water meter.

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Annex A (informative)

Examples of Concentric Manifold Solutions

Example A.

Key

1 45 chamfer

2 Water flow out

3 Water flow in

NOTE All machined surfaces to be unless otherwise stated. Tolerance on all angles to be 3.

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EN 14154-2:2005+A1:2007 (E)

15

Example B.

Key

1 45 chamfer

2 Water flow out

3 Water flow in

4 16,0 min. full thread

NOTE All machined surfaces to be unless otherwise stated. Tolerance on all angles to be 1.

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Annex ZA (informative)

!Relationship between this European Standard and the Essential Requirements of EU

Directive 22/2004/EC on Measuring Instruments

This European Standard has been prepared under a Mandate given by the European Commission and the European Free Trade Association to provide a means of conforming to Essential Requirements of the New Approach Directive 22/2004/EC on Measuring Instruments.

Once this standard is cited in the Official Journal of the European Communities under that Directive and has been implemented as a national standard in at least one Member State, compliance with the clauses of this standard given in Tables ZA.1 and ZA.2 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations.

Table ZA.1 Correspondence between this European Standard and Directive 22/2004/EC on Measuring Instruments

Relevant clauses for water meters intended for Residential and Commercial use

Clause(s)/subclause(s) of this European Standard

Essential Requirements (ERs) of Directive 22/2004/EC Annex I Suitability

Qualifying remarks/Notes

- I.7.4 Insensitivity to small fluctuations of measurand at constant value

Not applicable

Clause(s)/subclause(s) of this European Standard

Information to be borne by and to accompany the instrument

4.2 I.9.3 Information on operation (unless simplicity makes this unnecessary)

- I.9.4 Individual instruction manual not necessary in some cases

Not applicable

Clause(s)/subclause(s) of this European Standard

Indication of result

5.5 I.10.2 Clear and unambiguous and easy reading

- I.10.3 Hard-copy or print easy legible and non erasable

Not applicable

- I.10.4 Direct sales trading transactions

Not applicable

5.5 I.10.5 Utility measurement instrument with possibility for remote reading, must have metrologically controlled display of measurement result accessible for consumer without tools

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Table ZA.1 (concluded)

Clause(s)/subclause(s) of this European Standard

Further processing of data to conclude trading transaction

- I.11.1 Other than utility measuring instrument to record in durable way the measurement result and information to identity the transaction when

- measurement is non-repeatable

- normally one of trading partners is absent

Not applicable

- I.11.2 Availability of durable proof of measurement result available on request when measurement is concluded

Not applicable

Table ZA.2 Correspondence between this European Standard and Directive 22/2004/EC on Measuring Instruments

Relevant clauses for water meters intended for Light Industrial use

Clause(s)/subclause(s) of this European Standard

Essential Requirements (ERs) of Directive 22/2004/EC Annex I Suitability

Qualifying remarks/Notes

- I.7.4 Insensitivity to small fluctuations of measurand at constant value

Not applicable

Clause(s)/subclause(s) of this European Standard

Information to be borne by and to accompany the instrument

4.2 I.9.3 Information on operation (unless simplicity makes this unnecessary)

- I.9.4 Individual instruction manual not necessary in some cases.

Not applicable

Clause(s)/subclause(s) of this European Standard

Indication of result

- I.10.3 Hard-copy or print easy legible and non erasable

Not applicable

- I.10.4 Direct sales trading transactions

Not applicable

5.5 I.10.5 Utility measurement instrument with possibility for remote reading, must have metrologically controlled display of measurement result accessible for consumer without tools.

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Table ZA.2 (concluded)

Clause(s)/subclause(s) of this European Standard

Further processing of data to conclude trading transaction

- I.11.1 Other than utility measuring instrument to record in durable way the measurement result and information to identity the transaction when- measurement is non-repeatable - normally one of trading partners is absent

Not applicable

- I.11.2 Availability of durable proof of measurement result available on request when measurement is concluded.

Not applicable

WARNING Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard."

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!deleted text"

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BSI389 Chiswick High RoadLondonW4 4AL14154-2:2005www.bz

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