SIST EN ISO 4064-1:2017
(Main)Water meters for cold potable water and hot water - Part 1: Metrological and technical requirements (ISO 4064-1:2014)
Water meters for cold potable water and hot water - Part 1: Metrological and technical requirements (ISO 4064-1:2014)
This part of ISO 4064|OIML R 49 specifies the metrological and technical requirements for water meters
for cold potable water and hot water flowing through a fully charged, closed conduit. These water meters
incorporate devices which indicate the integrated volume.
In addition to water meters based on mechanical principles, this part of ISO 4064|OIML R 49 applies to
devices based on electrical or electronic principles, and mechanical principles incorporating electronic
devices, used to measure the volume of cold potable water and hot water.
This part of ISO 4064|OIML R 49 also applies to electronic ancillary devices. Ancillary devices are
optional. However, it is possible for national or regional regulations to render some ancillary devices
mandatory in relation to the utilization of water meters.
NOTE Any national regulations apply in the country of use.
Wasserzähler zum Messen von kaltem Trinkwasser und heißem Wasser - Teil 1: Metrologische und technische Anforderungen (ISO 4064-1:2014)
Compteurs d'eau potable froide et d'eau chaude - Partie 1: Exigences métrologiques et techniques (ISO 4064-1:2014)
L'ISO 4064-1:2014|OIML R 49-1:2013 spécifie les exigences métrologiques et techniques applicables aux compteurs d'eau potable froide et d'eau chaude circulant dans une conduite fermée entièrement chargée. Ces compteurs d'eau comportent des dispositifs indiquant le volume compté.
En plus des compteurs d'eau dont le fonctionnement est basé sur des principes mécaniques, l'ISO 4064-1:2014|OIML R 49-1:2013 s'applique aux dispositifs dont le fonctionnement est basé sur un principe électrique ou électronique, ainsi qu'à un fonctionnement mécanique incluant des dispositifs électroniques utilisés pour mesurer le volume débité d'eau potable froide et d'eau chaude.
L'ISO 4064-1:2014|OIML R 49-1:2013 s'applique également à des dispositifs électroniques auxiliaires. Les dispositifs auxiliaires sont facultatifs. Il est cependant possible que des réglementations nationales ou régionales rendent certains dispositifs auxiliaires obligatoires selon l'utilisation du compteur d'eau.
Vodomeri za merjenje hladne pitne vode in vroče vode - 1. del: Metrološke in tehnične zahteve (ISO 4064-1:2014)
Ta del standarda ISO 4064|OIML R 49 določa metrološke in tehnične zahteve za vodomere za merjenje hladne pitne vode in vroče vode, ki teče skozi zaprto cev s polnim pretokom. Ti vodomeri imajo vgrajene naprave, ki prikazujejo vgrajen pretok.
Poleg mehansko delujočih vodomerov se ta del standarda ISO 4064|OIML R 49 uporablja za električno ali elektronsko delujoče naprave in naprave, delujoče na podlagi mehanskih načel z vgrajenimi elektronskimi napravami, ki se uporabljajo za merjenje pretoka hladne pitne vode in vroče vode.
Ta del standarda ISO 4064|OIML R 49 se uporablja tudi za elektronske pomožne naprave. Pomožne naprave so izbirne. Kljub temu lahko nacionalni ali regijski predpisi določajo obvezno uporabo nekaterih pomožnih naprav v povezavi z uporabo vodomerov.
OPOMBA: Veljajo vsi nacionalni predpisi v državi uporabe.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 4064-1:2017
01-september-2017
1DGRPHãþD
SIST EN ISO 4064-1:2014
9RGRPHUL]DPHUMHQMHKODGQHSLWQHYRGHLQYURþHYRGHGHO 0HWURORãNHLQ
WHKQLþQH]DKWHYH ,62
Water meters for cold potable water and hot water - Part 1: Metrological and technical
requirements (ISO 4064-1:2014)
Wasserzähler zum Messen von kaltem Trinkwasser und heißem Wasser - Teil 1:
Metrologische und technische Anforderungen (ISO 4064-1:2014)
Compteurs d'eau potable froide et d'eau chaude - Partie 1: Exigences métrologiques et
techniques (ISO 4064-1:2014)
Ta slovenski standard je istoveten z: EN ISO 4064-1:2017
ICS:
17.120.10 Pretok v zaprtih vodih Flow in closed conduits
91.140.60 Sistemi za oskrbo z vodo Water supply systems
SIST EN ISO 4064-1:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 4064-1:2017
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SIST EN ISO 4064-1:2017
EN ISO 4064-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2017
EUROPÄISCHE NORM
ICS 91.140.60 Supersedes EN ISO 4064-1:2014
English Version
Water meters for cold potable water and hot water - Part
1: Metrological and technical requirements (ISO 4064-
1:2014)
Compteurs d'eau potable froide et d'eau chaude - Wasserzähler zum Messen von kaltem Trinkwasser
Partie 1: Exigences métrologiques et techniques (ISO und heißem Wasser - Teil 1: Metrologische und
4064-1:2014) technische Anforderungen (ISO 4064-1:2014)
This European Standard was approved by CEN on 11 May 2017.
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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4064-1:2017 E
worldwide for CEN national Members.
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SIST EN ISO 4064-1:2017
EN ISO 4064-1:2017 (E)
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/32/EU aimed to be covered . 4
2
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SIST EN ISO 4064-1:2017
EN ISO 4064-1:2017 (E)
European foreword
The text of ISO 4064-1:2014 has been prepared by Technical Committee ISO/TC 30 “Measurement of
fluid flow in closed conduits” of the International Organization for Standardization (ISO) and has been
taken over as EN ISO 4064-1:2017 by Technical Committee CEN/TC 92 “Water meters” the secretariat
of which is held by SNV.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2017, and conflicting national standards
shall be withdrawn at the latest by November 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 4064-1:2014.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directives.
For relationship with EU Directives, see informative Annex ZA, which is an integral part of this
document.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 4064-1:2014 has been approved by CEN as EN ISO 4064-1:2017 without any
modification.
3
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SIST EN ISO 4064-1:2017
EN ISO 4064-1:2017 (E)
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of Directive 2014/32/EU aimed to be covered
This European Standard has been prepared under a Commission’s standardization request Mandate to
CEN and CENELEC for standardisation in the field of measuring instruments “M/374 EN” to provide one
voluntary means of conforming to essential requirements of Directive 2014/32/EU of the European
Parliament and the Council of 26 February 2014 on measuring instruments (Text with EEA relevance).
Once this standard is cited in the Official Journal of the European Union under that Directive
2014/32/EU, compliance with the normative clauses of this standard given in Table ZA.1 confers,
within the limits of the scope of this standard, a presumption of conformity with the corresponding
essential requirements of that Directive 2014/32/EU, and associated EFTA regulations.
Introduction:
The column “Comment” the term "Addressed" indicates the compliance between EN ISO 4064-1:2014
and the relevant requirement in Directive 2014/32/EU. The term "Not (fully) addressed" indicates that
compliance may not (fully) be realised, whilst "Addressed" may also be qualified in other ways. In the
case the requirement is "Not fully addressed", a short statement may explain what is covered. The
indication “Not applicable” means that the requirement in Annex I of Directive 2014/32/EU is not
relevant for Water Meters.
The original Directive 2004/22/EU had been amended by Directive 137/2009/EC. These have been
fully replaced by Directive 2014/32/EU. This latest directive has already been amended by Directive
2015/13/EU.
The numbering in the first column reflects the structure of the new Directive 2014/32/EU.
For purpose of cross-reference the second column indicates the structure of the original Directive
2004/22/EU.
4
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SIST EN ISO 4064-1:2017
EN ISO 4064-1:2017 (E)
Table ZA.1 — Correspondence between this European Standard and Annex I of Directive
2014/32/EU.
Essential Requirements (ERs)
Essential Requirements (ERs)
of Directive 22/2004/EC
Clause(s)/sub- Qualifying
of Directive 32/2014/EU
Annex I Essential
clause(s) remarks/
Annex I Essential
Requirements
Requirements
of this EN Notes
Note: Amended by Directive
Note: Amended by Directive
2009/137
2015/13/EU
4.2.2
Accuracy class 1
I.1.1 and 1.2 Allowable errors, I.1.1 and 1.2 Allowable errors,
4.2.3
Rated operating conditions Rated operating conditions
Accuracy class 2
6.4
I.1.3.1 Climatic environments, I.1.3.1 Climatic environments,
A.2 Classes B, O, or M
temperature limits temperature limits
I.1.3.2 Mechanical environments I.1.3.2 Mechanical environments A.2 Classes B, O, or M
I.1.3.3 Electromagnetic I.1.3.3 Electromagnetic
A.3 Classes E1 or E2
environments environments
7.2.12.2.2
I.1.3.4 Other influences I.1.3.4 Other influences Addressed
Annex A table A.1,
8.5.3
Addressed in EN
ISO 4064-2
Not addressed in EN
I.1.4.1 Basic rules for testing I.1.4.1 Basic rules for testing
ISO 4064-1 7.2.2,
7.4.2
7.4.3
Annex A table A.1,
I.1.4.2 Ambient humidity I.1.4.2 Ambient humidity Addressed
8.4
I.2 Reproducibility I.2 Reproducibility 7.2.9.3 Addressed
7.2.4 and
Addressed via
I.3 Repeatability I.3 Repeatability
Covered in EN
acceptance
ISO 4064-2,
criteria of tests
performance tests
Covered in EN Addressed via
I.4 Discrimination and
I.4 Discrimination and sensitivity ISO 4064-2, acceptance
sensitivity
performance tests criteria of tests
Addressed
I.5 Durability I.5 Durability 7.2.6
Addressed
I.6 Reliability I.6 Reliability 7.2.6
Covered in EN Addressed via
I.7 Suitability I.7 Suitability
ISO 4064-2, acceptance
performance tests criteria of tests.
EN ISO 4064-1, Implicitly
5
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SIST EN ISO 4064-1:2017
EN ISO 4064-1:2017 (E)
clauses 4 to 6 mentioned
Instrument
EN ISO 4064-5, 4.1
requirements
Addressed with
in the chapter
"Selection
criteria"
I.7.1 Fraudulent use I.7.1 Fraudulent use 6.1.7 Addressed
No individual See meter
I.7.2 Suitable for use I.7.2 Suitable for use
chapter classification
6.1.9
I.7.3 Unduly biasing I.7.3 Unduly biasing Addressed
6.2.1
Addressed in EN
I.7.4 Insensitivity to measurand I.7.4 Insensitivity to measurand Not addressed in EN ISO 4064-2
fluctuations fluctuations ISO 4064-1 performance
tests
I.7.5 Robustness and suitability I.7.5 Robustness and suitability
6.1 Addressed
of materials of materials
I.7.6 Allow for control after I.7.6 Allow for control after
Annex B Addressed
placing on the market placing on the market
5.1.1
I.8.1 Not to be influenced in any I.8.1 Not to be influenced in any
Addressed
admissible way admissible way
6.3
I.8.2 Securing of hardware I.8.2 Securing of hardware
6.8 Addressed
components components
I.8.3 Securing and identification I.8.3 Securing and identification
6.8 Addressed
of software of software
I.8.4 Measurement data I.8.4 Measurement data
adequately protected against adequately protected against 6.8 Addressed
corruption corruption
I.8.5 Total quantity supplied not I.8.5 Total quantity supplied not
6.8 Addressed
to be reset to be reset
I.9.1 Inscriptions I.9.1 Inscriptions 6.6 Addressed
I.9.2 Marking of packaging and I.9.2 Marking of packaging and
6.6 Addressed
documents documents
Not addressed in EN Addressed EN
I.9.3 Information on operation I.9.3 Information on operation
ISO 4064-1 ISO 4064-5, 4.2
I.9.4 Necessity of instruction I.9.4 Necessity of instruction Not addressed in EN Addressed EN
manual manual ISO 4064-1 ISO 4064-5, 4.2
6.7. 3.2.1
I.9.5 Scale interval for the I.9.5 Scale interval for the
Addressed
measurand measurand
6.7.3.2.3
Addressed in EN
Not addressed in EN
I.9.6 Material measure I.9.6 Material measure ISO 4064-2,
ISO 4064-1
6.4.3.2
6
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SIST EN ISO 4064-1:2017
EN ISO 4064-1:2017 (E)
I.9.7 Unit of measurement I.9.7 Unit of measurement 6.7.1.2 Addressed
I.9.8 Marking properties I.9.8 Marking properties 6.7.1 Addressed
Display is
addressed, the
I.10.1 Display or hard copy I.10.1 Display or hard copy 6.7.2 standard does
not address hard
copy
I.10.2 Reading properties I.10.2 Reading properties 6.7.1.1 Addressed
The standard
I.10.3 Hard-copy or print I.10.3 Hard-copy or print
- does not address
properties properties
hard copy
The standard
I.10.4 Direct sales trading I.10.4 Direct sales trading
- does not address
transactions transactions
hard copy
I.10.5 Properties of display for I.10.5 Properties of display for
6.1.8 Addressed
remote reading remote reading
I.11.1 Recording properties of I.11.1 Recording properties of
non-utility measuring non-utility measuring - Not applicable
instrument instrument
I.11.2 Availability of durable I.11.2 Availability of durable
- Not applicable
proof of measurement result proof of measurement result
Addressed
3.6
I.12 Conformity evaluation I.12 Conformity evaluation
together with
7.2
EN 4064-2
7.3
clause 10
Qualifying
Specific Requirements of Specific requirements of Clause(s)/subclaus
remarks/Notes
Annex III for WATER METERS Annex MI-001 for WATER e(s) of this
(MI-001) METERS European Standard
Rated Operating Conditions Rated Operating Conditions 3.3 and 6.4 Addressed
MI.1 Values of flow rate range
MI.1 Values of flow rate range
4.1 Addressed
Note: addresses amendment of
Directive 2015/13/EU
Addressed/MID
does not rate
MI.2 Temperature range of the MI.2 Temperature range of the temperatures
4.2.4
water water into classes but it
does give limits
though
Addressed,
meters rated
MI.3 Relative pressure of the MI.3 Relative pressure of the
with a relative
4.2.8 and 6.4
water water
pressure of the
water below
10bar are not
7
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SIST EN ISO 4064-1:2017
EN ISO 4064-1:2017 (E)
within the scope
of the MID
MI.4 Nominal value of AC
MI.4 Nominal value of AC voltage
voltage supply and limits of DC 5.2 Addressed
supply and limits of DC supply
supply
The MID
provides only for
MI.5 MPE ± 2 % for water meters
MI.5 MPE ± 2 % for water
temperature ≤ 30 °C for flow equivalent to
temperature ≤ 30 °C for flow rate 4.2.3
rate between Q2 (included) and accuracy class 2/
between Q2 (included) and Q4
Q4 The MID does
not recognize
classification
The MID
provides only for
MI.5 MPE ±3% for water meters
MI.5 MPE ±3% for water
temperature > 30 °C for flow equivalent to
temperature > 30 °C for flow rate 4.2.3
rate between Q2 (included) and accuracy class 2/
between Q2 (included) and Q4
Q4 The MID does
not recognize
classification
MI.6 MPE ± 5 % for any water MI.6 MPE ± 5 % for any water
temperature for flow rate temperature for flow rate 4.2.3 Not addressed
between Q1 and Q2 (excluded) between Q1 and Q2 (excluded)
7.2.3
(see: Directive 137/2009/EC
MI.6 Non exploitation of MPE Not addressed.
Requirements below)
7.3.6
Addressed in the
MI.7.1.1 Electromagnetic MI.7.1.1 Electromagnetic annex for
A.3
immunity immunity Electromagnetic
environment
Addressed in the
MI.7.1.2 Condition after MI.7.1.2 Condition after annex for
A.3
electromagnetic disturbance electromagnetic disturbance Electromagnetic
environment
Addressed in the
annex for
MI 7.1.3 Critical change value MI 7.1.3 Critical change value A.3
Electromagnetic
environment
MI 7.2.1 Variation of MI 7.2.1 Variation of
7.2.6.3 Addressed
measurement after durability measurement after durability
MI 7.2.2 Error of indication after MI 7.2.2 Error of indication after
7.2.6.3 Addressed
durability durability
MI.8.1 Meter able to be installed MI.8.1 Meter able to be installed
7.2.3 Addressed
in defined position in defined position
MI.8.2 Meter is not designed to MI.8.2 Meter is not designed to
4.2.7 Addressed
measure reverse flow measure reverse flow
8
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SIST EN ISO 4064-1:2017
EN ISO 4064-1:2017 (E)
MI.9 Cubic metre MI.9 Cubic metre 6.7.1.2 Addressed
Addressed in EN
Not addressed in EN
MI 10 Putting into use MI 10 Putting into use ISO 4064-5, 6.2.6
ISO 4064-1
and 8.3.2 and I.7
Clause(s)/subclause
Directive 137/2009/EC Qualifying
(s) of this European
Requirements remarks/Notes
Standard
"non-
exploitation of
7.2.3
the maximum
MI 001 6a Exploitation of MPE
permissible
7.3.6
errors", not
addressed
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
9
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SIST EN ISO 4064-1:2017
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SIST EN ISO 4064-1:2017
INTERNATIONAL ISO
STANDARD 4064-1
Fourth edition
2014-06-01
Water meters for cold potable water
and hot water —
Part 1:
Metrological and technical
requirements
Compteurs d’eau potable froide et d’eau chaude —
Partie 1: Exigences métrologiques et techniques
Reference number
ISO 4064-1:2014(E)
©
ISO 2014
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SIST EN ISO 4064-1:2017
ISO 4064-1:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved
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SIST EN ISO 4064-1:2017
ISO 4064-1:2014(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Water meter and its constituents. 1
3.2 Metrological characteristics . 5
3.3 Operating conditions . 6
3.4 Test conditions . 8
3.5 Electronic and electrical equipment .10
3.6 Use of certain terms within the European Economic Area .11
4 Metrological requirements .11
4.1 Values of Q , Q , Q , and Q .
1 2 3 4 11
4.2 Accuracy class and maximum permissible error .12
4.3 Requirements for meters and ancillary devices .13
5 Water meters equipped with electronic devices .15
5.1 General requirements .15
5.2 Power supply .15
6 Technical requirements .16
6.1 Materials and construction of water meters .16
6.2 Adjustment and correction . .17
6.3 Installation conditions.17
6.4 Rated operating conditions .19
6.5 Pressure loss .19
6.6 Marks and inscriptions .19
6.7 Indicating device .21
6.8 Protection devices .24
7 Metrological controls .24
7.1 Reference conditions .24
7.2 Type evaluation and approval .25
7.3 Initial verification .29
Annex A (normative) Performance tests for water meters with electronic devices .31
Annex B (normative) Checking facilities .33
Annex C (informative) Permissible errors in service and subsequent verification .37
Bibliography .38
© ISO 2014 – All rights reserved iii
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SIST EN ISO 4064-1:2017
ISO 4064-1:2014(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2, www.iso.org/directives.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received, www.iso.org/patents.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
The committees responsible for this document are Technical Committee ISO/TC 30, Measurement of fluid
flow in closed conduits, Subcommittee SC 7, Volume methods including water meters and OIML Technical
Subcommittee TC 8/SC 5 Water meters.
This fourth edition of ISO 4064-1 cancels and partially replaces the third edition (ISO 4064-1:2005), which
has been technically revised. Some provisions of the third edition are addressed in ISO 4064-4:2014.
ISO 4064 consists of the following parts, under the general title Water meters for cold potable water and
hot water:
— Part 1: Metrological and technical requirements
— Part 2: Test methods
— Part 3: Test report format
— Part 4: Non-metrological requirements not covered in ISO 4064-1
— Part 5: Installation requirements
This edition of ISO 4064-1 is identical to the corresponding edition of OIML R 49-1, which has been
issued concurrently. OIML R 49-1 was approved for final publication by the International Committee of
Legal Metrology at its 48th meeting in Ho Chi Minh City, Vietnam in October 2013. It will be submitted
to the International Conference on Legal Metrology in 2016 for formal sanction.
iv © ISO 2014 – All rights reserved
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SIST EN ISO 4064-1:2017
INTERNATIONAL STANDARD ISO 4064-1:2014(E)
Water meters for cold potable water and hot water —
Part 1:
Metrological and technical requirements
1 Scope
This part of ISO 4064|OIML R 49 specifies the metrological and technical requirements for water meters
for cold potable water and hot water flowing through a fully charged, closed conduit. These water meters
incorporate devices which indicate the integrated volume.
In addition to water meters based on mechanical principles, this part of ISO 4064|OIML R 49 applies to
devices based on electrical or electronic principles, and mechanical principles incorporating electronic
devices, used to measure the volume of cold potable water and hot water.
This part of ISO 4064|OIML R 49 also applies to electronic ancillary devices. Ancillary devices are
optional. However, it is possible for national or regional regulations to render some ancillary devices
mandatory in relation to the utilization of water meters.
NOTE Any national regulations apply in the country of use.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 4064-2:2014|OIML R 49-2:2013, Water meters for cold potable water and hot water — Part 2: Test
methods
3 Terms and definitions
For the purposes of this document, the following definitions apply.
[1]
NOTE This terminology conforms to that used in ISO/IEC Guide 99:2007|OIML V 2-200:2012, OIML V
[2] [3] [1] [3]
1:2013 and OIML D 11. Modified versions of some terms defined in References – are listed here.
3.1 Water meter and its constituents
3.1.1
water meter
instrument intended to measure continuously, memorize, and display the volume of water passing
through the measurement transducer at metering conditions
Note 1 to entry: A water meter includes at least a measurement transducer, a calculator (including adjustment or
correction devices, if present) and an indicating device. These three devices can be in different housings.
Note 2 to entry: A water meter may be a combination meter (see 3.1.16).
Note 3 to entry: In this International Standard, a water meter is also referred to as a “meter”.
© ISO 2014 – All rights reserved 1
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SIST EN ISO 4064-1:2017
ISO 4064-1:2014(E)
3.1.2
measurement transducer
part of the meter that transforms the flow rate or volume of water to be measured into signals which are
passed to the calculator and includes t
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