Liquid pumps and pump units - Noise test code - Grades 2 and 3 of accuracy (ISO 20361:2007)

ISO 20361:2007 specifies all the information necessary to carry out efficiently and under standardized conditions the determination, declaration and verification of the airborne noise emission of liquid pumps or pump units. It specifies the noise measurement methods and the operating and mounting conditions that shall be used for the test.
The use of ISO 20361:2007 ensures the reproducibility of the determination of the airborne noise-emission characteristics within specified limits determined by the grade of accuracy of the basic airborne noise measurement method used. Noise measurement methods according to ISO 20361:2006 are engineering methods (grade 2) and survey methods (grade 3).
ISO 20361:2007 does not deal with the characterization of the structure-borne sound and liquid-borne noise generated by liquid pumps.

Flüssigkeitspumpen und -pumpenaggregate - Geräuschmessung - Genauigkeitsklassen 2 und 3 (ISO 20361:2007)

Diese Internationale Norm legt alle Informationen fest, um wirkungsvoll und unter genormten Bedingungen die
Bestimmung, Angabe und Feststellung der Übereinstimmung der Luftschallgeräuschemission von Flüssigkeitspumpen
oder -pumpenaggregaten durchzuführen (siehe 4.1). Sie legt die zugelassenen Geräuschmessverfahren
und die Betriebs- und Montagebedingungen fest, die zur Prüfung verwendet werden müssen.
Die Geräuschemissions-Kennwerte schließen den Emissionsschalldruckpegel einer festgelegten Position und
den Schalleistungspegel ein. Die Bestimmung dieser Größen ist erforderlich für:
 die Angabe der Geräusch-Emissionswerte;
 die Lärmminderung an der Quelle in der Konstruktionsphase.
ANMERKUNG 1 Die Bestimmung dieser Größen ist auch für den Vergleich der Geräuschemission in den Verkehr
gebrachter Flüssigkeitspumpen erforderlich.
Die Anwendung dieser Internationalen Norm stellt die Reproduzierbarkeit der Bestimmung von Luftschallgeräuschemissionskennwerten
innerhalb der festgelegten Grenzen der Genauigkeitsklasse des verwendeten
Luftschallgeräuschmessverfahrens sicher. Geräuschmessverfahren nach dieser Internationalen Norm sind
Genauigkeitsklasse 2 (en "Engineering methods") und Genauigkeitsklasse 3 (en "Survey methods").
Diese Internationale Norm behandelt nicht den von Flüssigkeitspumpen erzeugten Körperschall und Flüssigkeitsschall.
ANMERKUNG 2 Diese Internationale Norm dient der Vervollständigung von EN 809, Pumps and pump units for liquids —
Common safety requirements.

Pompes et groupes motopompes pour liquides - Code d'essai acoustique - Classes de précision 2 et 3 (ISO 20361:2007)

L'ISO 20361:2007 spécifie toutes les informations nécessaires pour réaliser efficacement et dans les conditions normalisées, la détermination, la déclaration et la vérification de l'émission de bruit aérien des pompes ou groupes motopompes pour liquides. Elle spécifie également les méthodes de mesurage du bruit ainsi que les conditions de fonctionnement et de montage qui doivent être utilisées pour l'essai.
L'utilisation de l'ISO 20361:2007 assure la reproductibilité de la détermination des caractéristiques d'émission de bruit aérien dans des limites spécifiées, déterminées par la classe de précision de la méthode de base de mesurage du bruit aérien utilisée. Les méthodes de mesurage du bruit selon l'ISO 20361:2007 sont des méthodes d'expertise (classe 2) et des méthodes de contrôle (classe 3).
L'ISO 20361:2007 ne traite pas de la caractérisation du bruit solidien ni du bruit liquidien générés par les pompes pour liquides.

Črpalke za tekočine in črpalni agregati - Merjenje hrupa - Razreda točnosti 2 in 3 (ISO 20361:2007)

General Information

Status
Withdrawn
Publication Date
21-Apr-2009
Withdrawal Date
09-Jun-2015
Technical Committee
Drafting Committee
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
10-Jun-2015

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO 20361:2009
01-junij-2009
1DGRPHãþD
SIST EN 12639:2001
SIST EN 12639:2001/AC:2002
SIST EN 12639:2001/AC:2004

ýUSDONH]DWHNRþLQHLQþUSDOQLDJUHJDWL0HUMHQMHKUXSD5D]UHGDWRþQRVWLLQ

,62
Liquid pumps and pump units - Noise test code - Grades 2 and 3 of accuracy (ISO
20361:2007)

Pompes et groupes motopompes pour liquides - Code d'essai acoustique - Classes de

précision 2 et 3 (ISO 20361:2007)
Ta slovenski standard je istoveten z: EN ISO 20361:2009
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
23.080 ýUSDONH Pumps
SIST EN ISO 20361:2009 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 20361:2009
---------------------- Page: 2 ----------------------
SIST EN ISO 20361:2009
EUROPEAN STANDARD
EN ISO 20361
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2009
ICS 17.140.20; 23.080 Supersedes EN 12639:2000
English Version
Liquid pumps and pump units - Noise test code - Grades 2 and
3 of accuracy (ISO 20361:2007)
Pompes et groupes motopompes pour liquides - Code
d'essai acoustique - Classes de précision 2 et 3 (ISO
20361:2007)
This European Standard was approved by CEN on 10 April 2009.

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: Avenue Marnix 17, B-1000 Brussels

© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20361:2009: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 20361:2009
EN ISO 20361:2009 (E)
Contents Page

Foreword ..............................................................................................................................................................3

Annex ZA (normative) Normative references to international publications with their following

European publications ..........................................................................................................................4

Annex ZB (informative) Relationship between this European Standard and the Essential

Requirements of EC Directive of EU Directive 98/37/CE ..................................................................6

Annex ZC (informative) Relationship between this European Standard and the Essential

Requirements of Directive EU Directive 2006/42/EC ..........................................................................7

---------------------- Page: 4 ----------------------
SIST EN ISO 20361:2009
EN ISO 20361:2009 (E)
Foreword

The text of ISO 20361:2007 has been prepared by Technical Committee ISO/TC 115 “Pumps” of the

International Organization for Standardization (ISO) and has been taken over as EN ISO 20361:2009 by

Technical Committee CEN/TC 197 “Pumps” the secretariat of which is held by AFNOR.

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 October 2009, and conflicting national standards shall be withdrawn at

the latest by December 2009.

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 12639:2000.

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 EC Directives.

For relationship with EC Directives, see informative Annexes ZB and ZC, which are 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, 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 the United Kingdom.
Endorsement notice

The text of ISO 20361:2007 has been approved by CEN as a EN ISO 20361:2009 without any modification.

NOTE Normative references to International Standards are listed in annex ZA (normative).

---------------------- Page: 5 ----------------------
SIST EN ISO 20361:2009
EN ISO 20361:2009 (E)
Annex ZA
(normative)
Normative references to international publications
with their following European publications

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.
Standard Year Title EN Year
1994 Acoustics — Determination of sound power levels of 1995 EN ISO 3743-1
ISO 3743-1
noise sources — Engineering methods for small,
movable sources in reverberant fields — Part 1:
Comparison method in hard-walled test rooms

ISO 3743-2 1994 Acoustics — Determination of sound power levels of 1996 EN ISO 3743-1

noise sources using sound pressure — Engineering
methods for small, movable sources in reverberant
fields — Part 2: Methods for special reverberation test
rooms
1994 Acoustics — Determination of sound power levels of 1995 EN ISO 3744
ISO 3744
noise sources using sound pressure — Engineering
method in an essentially free field over a reflecting
plane
1995 Acoustics — Determination of sound power levels of 1995 EN ISO 3746
ISO 3746
noise sources using sound pressure — Survey method
using an enveloping measurement surface over a
reflecting plane
ISO 4871 1996 Acoustics — Declaration and verification of noise 1996 EN ISO 4871
emission values of machinery and equipment

ISO 9614-1 1993 Acoustics — Determination of sound power levels of 1995 EN ISO 9614-1

noise sources using sound intensity — Part 1:
Measurement at discrete points

ISO 9614-2 1996 Acoustics — Determination of sound power levels of 1996 EN ISO 9614-2

noise sources using sound intensity — Part 2:
Measurement by scanning
1) To be published (Revision of ISO 3743-1:1994)
2) To be published (Revision of ISO 3744:1994)
3) To be published (Revision of ISO 3746:1995)
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SIST EN ISO 20361:2009
EN ISO 20361:2009 (E)
Standard Year Title EN Year
ISO 11203 1995 Acoustics — Noise emitted by machinery and 1995 EN ISO 11203
equipment — Determination of emission sound
pressure levels at the work station and at other
specified positions from the sound power level

ISO 12100-1 2003 Safety of machinery — Basic concepts, general 2003 EN ISO 12100-1

principles for design — Part 1 : Basic terminology,
methodology

ISO 12100-2 2003 Safety of machinery — Basic concepts, general 2003 EN ISO 12100-2

principles for design — Part 2 : Technical principles
(EN ISO 12100-2)
ISO 17769 2008 Liquid pumps – General terms and installation – 2000 EN 12723
Definitions, quantities, letter symbols and units
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SIST EN ISO 20361:2009
EN ISO 20361:2009 (E)
Annex ZB
(informative)
Relationship between this European Standard and the Essential Requirements of
EC Directive of EU Directive 98/37/CE

This European Standard has been prepared under a mandate given to CEN by the European Commission

and the European Free Trade Association] to provide a means of conforming to Essential Requirements of the

New Approach Directive 98/37/EC, amended by 98/79/EC

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 table ZB 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.

WARNING — Other requirements and other EC Directives may be applicable to the product(s) falling within

the scope of this standard.
---------------------- Page: 8 ----------------------
SIST EN ISO 20361:2009
EN ISO 20361:2009 (E)
Annex ZC
(informative)
Relationship between this European Standard and the Essential Requirements of
Directive EU Directive 2006/42/EC

This European Standard has been prepared under a mandate given to CEN by the European Commission

and the European Free Trade Association to provide a means of conforming to Essential Requirements of the

New Approach Directive 2006/42/EC on machinery.

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 table ZC 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.

WARNING — Other requirements and other EC Directives may be applicable to the product(s) falling within

the scope of this standard.
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SIST EN ISO 20361:2009
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SIST EN ISO 20361:2009
INTERNATIONAL ISO
STANDARD 20361
First edition
2007-02-01
Corrected version
2007-04-01
Liquid pumps and pump units — Noise
test code — Grades 2 and 3 of accuracy
Pompes et groupes motopompes pour liquides — Code d'essai
acoustique — Classes de précision 2 et 3
Reference number
ISO 20361:2007(E)
ISO 2007
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SIST EN ISO 20361:2009
ISO 20361:2007(E)
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© ISO 2007

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
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Published in Switzerland
ii © ISO 2007 – All rights reserved
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SIST EN ISO 20361:2009
ISO 20361:2007(E)
Contents Page

Foreword............................................................................................................................................................ iv

Introduction ........................................................................................................................................................ v

1 Scope ..................................................................................................................................................... 1

2 Normative references ........................................................................................................................... 1

3 Terms and definitions........................................................................................................................... 2

4 Pump family and pump configuration ................................................................................................ 2

5 Sound power level determination ....................................................................................................... 3

6 Emission sound pressure level determination................................................................................ 10

7 Installation and mounting conditions............................................................................................... 11

8 Operating conditions during noise measurement .......................................................................... 12

9 Information to be recorded ................................................................................................................ 12

10 Declaration and verification of noise emission values................................................................... 13

Annex A (normative) Pump alone — Measurement surface........................................................................ 14

Annex B (normative) Pump units — Microphone positions for sound pressure level measurement

on the measurement surface for different pump types and sizes................................................. 15

© ISO 2007 – All rights reserved iii
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SIST EN ISO 20361:2009
ISO 20361:2007(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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

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.

ISO 20361 was prepared by Technical Committee ISO/TC 115, Pumps.

This corrected version of ISO 20361:2007 incorporates the removal of “FDIS” from the footer on the cover

page and from the header on succeeding pages.
iv © ISO 2007 – All rights reserved
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SIST EN ISO 20361:2009
ISO 20361:2007(E)
Introduction

The noise emitted by a pump unit can be radiated by the casing of the pump, the driving system (e.g. motor,

gear box, coupling), the piping system and all the connected structures.

On site, the perceived noise can be significantly increased by reverberation effects or by the radiation of

extraneous sources.
Depending on the type of pump it may be useful to know
a) the noise of the pumping system (including piping);

b) the noise of the pump unit, including the driver and the transmission elements but excluding the noise of

the piping system;

c) the noise emitted by the pump alone, excluding the noise from the driver, transmission elements and the

pipings;

d) the noise emitted by each of those elements in respect to a given requirement or in view of an efficient

sound proofing of the installation.

This International Standard describes methods for the determination of the noise emitted by a pump unit

[case b)] or a pump alone [case c)]. Noise emission is expressed in terms of the sound power level of the

machine and the emission sound pressure level at the relevant work station (see 6.2).

This International Standard is intended to enable the manufacturer to
⎯ show the effectiveness of noise reduction,
⎯ declare the noise emission levels.

This International Standard is a type C standard as stated in ISO 12100-1 and ISO 12100-2.

When provisions of this type C standard are different from those which are stated in A or B standards, the

provisions of this type C standard take precedence.

The machinery concerned and the extent to which noise is covered are indicated in the scope of this

International Standard.
© ISO 2007 – All rights reserved v
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SIST EN ISO 20361:2009
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SIST EN ISO 20361:2009
INTERNATIONAL STANDARD ISO 20361:2007(E)
Liquid pumps and pump units — Noise test code — Grades 2
and 3 of accuracy
1 Scope

This International Standard specifies all the information necessary to carry out efficiently and under

standardized conditions the determination, declaration and verification of the airborne noise emission of liquid

pumps or pump units (see 4.1). It specifies the noise measurement methods and the operating and mounting

conditions that shall be used for the test.

Noise emission characteristics include emission sound pressure levels at specified positions and the sound

power level. The determination of these quantities is necessary for
⎯ declaring the noise emission values,
⎯ purpose of noise control at source at the design stage.

NOTE 1 The determination of these quantities is also necessary for comparing the noise emitted by liquid pumps on the

market.

The use of this International Standard ensures the reproducibility of the determination of the airborne noise-

emission characteristics within specified limits determined by the grade of accuracy of the basic airborne noise

measurement method used. Noise measurement methods according to this International Standard are

engineering methods (grade 2) and survey methods (grade 3).

This International Standard does not deal with the characterization of the structure-borne sound and liquid-

borne noise generated by liquid pumps.

NOTE 2 This International Standard is intended to complement EN 809, Pumps and pump units for liquids — Common

safety requirements.
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.

ISO 3743-1 , Acoustics — Determination of sound power levels and sound energy levels of noise sources

using sound pressure — Engineering method for small, movable sources in reverberant fields — Part 1:

Comparison method for a hard-walled test room

ISO 3743-2, Acoustics — Determination of sound power levels of noise sources using sound pressure —

Engineering methods for small, movable sources in reverberant fields — Part 2: Methods for special

reverberation test rooms

ISO 3744 , Acoustics — Determination of sound power levels of noise sources using sound pressure —

Engineering method in an essentially free field over a reflecting plane
1) To be published. (Revision of ISO 3743-1:1994)
2) To be published. (Revision of ISO 3744:1994)
© ISO 2007 – All rights reserved 1
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SIST EN ISO 20361:2009
ISO 20361:2007(E)

ISO 3746 , Acoustics — Determination of sound power levels of noise sources using sound pressure —

Survey method using an enveloping measurement surface over a reflecting plane

ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and

equipment

ISO/TR 7849, Acoustics — Estimation of airborne noise emitted by machinery using vibration measurement

ISO 9614-1, Acoustics — Determination of sound power levels of noise sources using sound intensity —

Part 1: Measurement at discrete points

ISO 9614-2:1996, Acoustics — Determination of sound power levels of noise sources using sound intensity —

Part 2: Measurement by scanning

ISO 11203:1995, Acoustics — Noise emitted by machinery and equipment — Determination of emission

sound pressure levels at the work station and at other specified positions from the sound power level

ISO 12100-1, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic

terminology, methodology

ISO 12100-2, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical

principles

ISO 17769, Liquid pumps — General terms and installation — Definitions, quantities, letter symbols and units

3 Terms and definitions

For the purposes of this document, the definitions given in ISO 17769 and the following apply.

3.1
pump

equipment that is defined as being terminated by its inlet and outlet branches as well as in general its shaft

ends
3.2
pump unit

equipment that is comprised of the pump as described in 3.1 and its driver (e.g. electric motor, steam turbine)

including transmission elements (e.g. coupling, gear), baseplates and any auxiliary equipment supplied with

the pump
4 Pump family and pump configuration

4.1 Pumps covered by this International Standard comprise liquid pumps of the rotodynamic and positive

displacement, rotary and reciprocating types.

4.2 This International Standard provides two possibilities of measurement, either pump alone (see Table 1),

or pump units (see Table 2). In these two cases, the pumps shall be installed
⎯ on site (see 7.2.2), or
⎯ on shop test stand (see 7.2.3), or
⎯ in a specific facility intended for acoustic measurement (see 7.2.4).
3) To be published. (Revision of ISO 3746:1995)
2 © ISO 2007 – All rights reserved
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SIST EN ISO 20361:2009
ISO 20361:2007(E)

4.3 Safety guards, e.g. coupling guards, insulation hoods etc., if any, shall be installed during

noise-emission determination.
5 Sound power level determination
5.1 General

One of the following grade 2 of accuracy methods for determining the sound power level shall be used:

⎯ ISO 3743-1 or ISO 3743-2;

NOTE 1 ISO 3743-1 is based upon a hard-walled room and low background noise. This International Standard

gives specifications to sound pressure level measurement in octave bands, in order to calculate the sound power

level.

NOTE 2 ISO 3743-2 is based upon special reverberation test room. This International Standard gives specifications

to A-weighted sound pressure level measurement in order to calculate the sound power level.

⎯ ISO 3744;

NOTE 3 ISO 3744 is based upon a non reverberant environment and low background noise. This International

Standard specifies a method to calculate the sound power level from the measured A-weighted sound pressure

levels or sound pressure levels in octave or third octave bands.
⎯ ISO 9614-1 or ISO 9614-2.

If it has been shown that the applicability requirements of these grade 2 standards cannot be attained, e.g. too

much background noise, then one of the following grade 3 methods shall be used:
⎯ ISO 3746;

NOTE 4 ISO 3746 is less demanding, it only gives specifications to the measurement of A-weighted sound pressure

levels and provides A-weighted sound power levels with grade 3 of accuracy.
⎯ ISO 9614-1 or ISO 9614-2;

NOTE 5 ISO 9614 (all parts) can be used in all environments, including reverberation and extraneous noise sources

to a large extent. This International Standard gives specifications to sound intensity and sound pressure

measurement. Depending on the level of the reverberation and extraneous noise, it provides the sound power level

either as A-weighted overall level or in octave or third-octave band. For grade 3 measurements, only the overall

A-weighted sound power level is available.

NOTE 6 ISO 9614-1 requires measurements of sound intensity and simultaneously sound pressure level (at

discrete points). In this case, the number of points is generally higher than the number of points used for the

standards based on sound pressure measurements.

NOTE 7 ISO 9614-2 requires measurement of sound intensity and simultaneously sound pressure level by scanning.

This can be made on partial or global surface depending on the configuration of the machine. The method generally

reduces the measurement time.
⎯ ISO/TR7849.

NOTE 8 ISO/TR 7849 is a technical report that can be used only when the prescriptions of the other methods are

not fulfilled. This method is based upon measurement of vibration velocity of the relevant parts of the pump or pump

unit. It provides an estimation of the A-weighted sound power level or sound power level in octave or third octave

bands.

For selection of the basic International Standard for determination of the sound power level of a pump, Table 1

for pumps (pump alone) and Table 2 for pump units shall be used.
© ISO 2007 – All rights reserved 3
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SIST EN ISO 20361:2009
ISO 20361:2007(E)
The reflecting plane shall be either a hard plane or a surface of water.

The International Standard, indicated in bold letters in Tables 1 and 2, describes the preferred method and

shall be used where practical. If it is not practical, one of the other noted basic International Standards shall be

used.
Table 1 — Pump (pump alone) — Selection of International Standards for
determination of sound power level
Pump power input
Test
Grade
arrangement
0,5 < P u 15 15 < P u 75 75 < P u 300 P > 300
b b
Specific 2 ISO 3744
ISO 9614 ISO 9614
ISO 3743-2 ISO 9614
facility ISO 3744 ISO 3744
ISO 9614 ISO 3743-2 ISO 3744
Shop test 2 impractical
ISO 9614
stand
b b
3 ISO 9614 ISO 9614
ISO 3746
On site 2 impractical
ISO 9614
b b
3 ISO 9614 ISO 9614
ISO 3746 ISO TR 7849

A facility can be qualified as specifically designed for noise measurements if it yields grade 2 measurements.

ISO 9614 means ISO 9614-1 or ISO 9614-2.
Table 2 — Pump unit — Selection of standards for determination
of sound power level
Pump power input
Test
Grade
arrangement
0,5 < P u 15 15 < P u 75 75 < P u 300 0,5 < P u 15
Specific 2 ISO 3744 ISO 3744 ISO 9614
a b
facility ISO 3743-2 ISO 9614 ISO 3744
ISO 9614
Shop test 2 ISO 3744 ISO 3744 ISO 9614
c b b
stand ISO 3743-1 ISO 9614 ISO 3744 ISO 9614
ISO 9614
b b
3 ISO 3746 ISO 9614 ISO 9614
ISO 9614 ISO 3746 ISO 3746
b b
On site 2 ISO 9614 ISO 9614
ISO 3744
3 ISO 3746 ISO 9614
ISO 9614 ISO 3746

A facility can be qualified as specifically designed for noise measurements if it yields grade 2 measurements.

ISO 9614 means ISO 9614-1 or ISO 9614-2.

ISO 3743-1 may be used for pump units in a shop test stand at the condition that pipings are properly lagged.

4 © ISO 2007 – All rights reserved
---------------------- Page: 20 ----------------------
SIST EN ISO 20361:2009
ISO 20361:2007(E)
5.2 Specific considerations for reference box, measurement surface, position of
microphones and intensity probe
5.2.1 General
When ISO 3744, ISO 3746 or ISO 9614 is used, 5.2.2 to 5.2.4 apply.
5.2.2 Reference box

The reference box is an hypothetical surface, the smallest simple volume (parallelepiped, box, cylinder, etc.)

containing the pump unit or pump and the flanges of the machine but excluding the pipings for the pump unit

and pipings, transmission elements and driver for pumps (pump alone) and small individual components of the

source that do not contribute to the sound radiation. For ISO 3744 and ISO 3746, the reference box is a

parallelepiped. The box encloses the source and terminates on the reflecting plane (hard ground or water).

For examples of reference boxes see Figures 1 and 2.
Key
1 reflecting plane
2 reference box
3 pump
4 driver
Figure 1 — Reference box for pump unit (example)
© ISO 2007 – All rights reserved 5
---------------------- Page: 21 ----------------------
SIST EN ISO 20361:2009
ISO 20361:2007(E)
Key
1 reflecting plane
2 reference box
3 pump
4 driver
Figure 2 — Reference box for pump (alone) (example)
5.2.3 Measurement surface and microphone
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Pompes et groupes motopompes pour liquides - Code d'essai acoustique - Classes de précision 2 et 3 (ISO 20361:2007)Liquid pumps and pump units - Noise test code - Grades 2 and 3 of accuracy (ISO 20361:2007)23.080ýUSDONHPumps17.140.20Emisija hrupa naprav in opremeNoise emitted by machines and equipmentICS:Ta slovenski standard je istoveten z:prEN ISO 20361kSIST prEN ISO 20361:2009en01-januar-2009kSIST prEN ISO 20361:2009SLOVENSKI

STANDARD
kSIST prEN ISO 20361:2009

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMFINAL DRAFTprEN ISO 20361October 2008ICS 17.140.20; 23.080Will supersede EN 12639:2000

English VersionLiquid pumps and pump units - Noise test code - Grades 2 and3 of accuracy (ISO 20361:2007)Pompes et groupes motopompes pour liquides - Coded'essai acoustique - Classes de précision 2 et 3 (ISO20361:2007)This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the TechnicalCommittee CEN/TC 197.If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations whichstipulate the conditions for giving this European Standard the status of a national standard without any alteration.This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other languagemade by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has thesame 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.Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice andshall not be referred to as a European Standard.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. prEN ISO 20361:2008: EkSIST prEN ISO 20361:2009

prEN ISO 20361:2008 (E) 2 Contents Page Foreword..............................................................................................................................................................3 Annex ZA (normative)

Normative references to international publications with their following European publications..........................................................................................................................4 Annex ZB (informative)

Relationship between this
European
Standard and the Essential Requirements

of EC Directive of EU Directive 98/37/CE..................................................................6 Annex ZC (informative)

Relationship between this
European

Standard and the Essential Requirements of Directive EU Directive 2006/42/EC..........................................................................7

kSIST prEN ISO 20361:2009

prEN ISO 20361:2008 (E) 3 Foreword The text of ISO 20361:2007 has been prepared by Technical Committee ISO/TC 115 “Pumps” of the International Organization for Standardization (ISO) and has been taken over as prEN ISO 20361:2008 by Technical Committee CEN/TC 197 “Pumps” the secretariat of which is held by AFNOR. This document is currently submitted to the Unique Acceptance Procedure. This document will supersede EN 12639:2000. 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 EC Directives. For relationship with EC Directives, see informative Annexes ZB and ZC, which are integral part of this document. Endorsement notice The text of ISO 20361:2007 has been approved by CEN as a prEN ISO 20361:2008 without any modification. NOTE Normative references to International Standards are listed in annex ZA (normative). kSIST prEN ISO 20361:2009

prEN ISO 20361:2008 (E) 4 Annex ZA (normative)

Normative references to international publications with their following European publications 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. Standard Year Title EN Year ISO 3743-11)

1994 Acoustics — Determination of sound power levels of noise sources — Engineering methods for small, movable sources in reverberant fields — Part 1: Comparison method in hard-walled test rooms 1995 EN ISO 3743-1 ISO 3743-2 1994 Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for small, movable sources in reverberant fields — Part 2: Methods for special reverberation test rooms 1996 EN ISO 3743-1 ISO 37442)

1994 Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane 1995 EN ISO 3744 ISO 37463)

1995 Acoustics — Determination of sound power levels of noise sources using sound pressure — Survey method using an enveloping measurement surface over a reflecting plane 1995 EN ISO 3746 ISO 4871 1996 Acoustics — Declaration and verification of noise emission values of machinery and equipment 1996 EN ISO 4871 ISO 9614-1 1993 Acoustics — Determination of sound power levels of noise sources using sound intensity

— Part 1: Measurement at discrete points 1995 EN ISO 9614-1 ISO 9614-2 1996 Acoustics — Determination of sound power levels of noise sources using sound intensity

— Part 2: Measurement by scanning 1996 EN ISO 9614-2

1) To be published (Revision of ISO 3743-1:1994) 2) To be published (Revision of ISO 3744:1994) 3) To be published (Revision of ISO 3746:1995) kSIST prEN ISO 20361:2009

prEN ISO 20361:2008 (E) 5

Standard Year Title EN Year ISO 11203 1995 Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at the work station and at other specified positions from the sound power level 1995 EN ISO 11203 ISO 12100-1 2003 Safety of machinery — Basic concepts, general principles for design — Part 1 : Basic terminology, methodology 2003 EN ISO 12100-1 ISO 12100-2 2003 Safety of machinery — Basic concepts, general principles for design — Part 2 : Technical principles (EN ISO 12100-2) 2003 EN ISO 12100-2 ISO 17769 2008 Liquid pumps – General terms and installation – Definitions, quantities, letter symbols and units 2000 EN 12723

kSIST prEN ISO 20361:2009
prEN ISO 20361:2008 (E) 6 Annex ZB (informative)
Relationship between this
European
Standard and the Essential Requirements

of EC Directive of EU Directive 98/37/CE This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association] to provide a means of conforming to Essential Requirements of the New Approach Directive 98/37/EC, amended by 98/79/EC

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 table ZA 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.

WARNING — Other requirements and other EC Directives may be applicable to the product(s) falling within the scope of this standard. kSIST prEN ISO 20361:2009

prEN ISO 20361:2008 (E) 7 Annex ZC (informative)
Relationship between this
European

Standard and the Essential Requirements of Directive EU Directive 2006/42/EC This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide a means of conforming to Essential Requirements of the New Approach Directive 2006/42/EC on machinery. 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 table ZA 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.

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

kSIST prEN ISO 20361:2009
kSIST prEN ISO 20361:2009
Reference numberISO 20361:2007(E)© ISO 2007

INTERNATIONAL STANDARD ISO20361First edition2007-02-01Corrected version2007-04-01Liquid pumps and pump units — Noise test code — Grades 2 and 3 of accuracy Pompes et groupes motopompes pour liquides — Code d'essai acoustique — Classes de précision 2 et 3

kSIST prEN ISO 20361:2009

ISO 20361:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

ISO 2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing 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 2007 – All rights reserved
kSIST prEN ISO 20361:2009

ISO 20361:2007(E) © ISO 2007 – All rights reserved iiiContents Page Foreword............................................................................................................................................................iv Introduction........................................................................................................................................................v 1 Scope.....................................................................................................................................................1 2 Normative references...........................................................................................................................1 3 Terms and definitions...........................................................................................................................2 4 Pump family and pump configuration................................................................................................2 5 Sound power level determination.......................................................................................................3 6 Emission sound pressure level determination................................................................................10 7 Installation and mounting conditions...............................................................................................11 8 Operating conditions during noise measurement..........................................................................12 9 Information to be recorded................................................................................................................12 10 Declaration and verification of noise emission values...................................................................13 Annex A (normative)

Pump alone — Measurement surface........................................................................14 Annex B (normative)

Pump units — Microphone positions for sound pressure level measurement on the measurement surface for different pump types and sizes.................................................15

kSIST prEN ISO 20361:2009

ISO 20361:2007(E) iv © ISO 2007 – All rights reserved 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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. ISO 20361 was prepared by Technical Committee ISO/TC 115, Pumps. This corrected version of ISO 20361:2007 incorporates the removal of “FDIS” from the footer on the cover page and from the header on succeeding pages. kSIST prEN ISO 20361:2009

ISO 20361:2007(E) © ISO 2007 – All rights reserved vIntroduction The noise emitted by a pump unit can be radiated by the casing of the pump, the driving system (e.g. motor, gear box, coupling), the piping system and all the connected structures. On site, the perceived noise can be significantly increased by reverberation effects or by the radiation of extraneous sources. Depending on the type of pump it may be useful to know a) the noise of the pumping system (including piping); b) the noise of the pump unit, including the driver and the transmission elements but excluding the noise of the piping system; c) the noise emitted by the pump alone, excluding the noise from the driver, transmission elements and the pipings; d) the noise emitted by each of those elements in respect to a given requirement or in view of an efficient sound proofing of the installation. This International Standard describes methods for the determination of the noise emitted by a pump unit [case b)] or a pump alone [case c)]. Noise emission is expressed in terms of the sound power level of the machine and the emission sound pressure level at the relevant work station (see 6.2). This International Standard is intended to enable the manufacturer to ⎯ show the effectiveness of noise reduction, ⎯ declare the noise emission levels. This International Standard is a type C standard as stated in ISO 12100-1 and ISO 12100-2. When provisions of this type C standard are different from those which are stated in A or B standards, the provisions of this type C standard take precedence. The machinery concerned and the extent to which noise is covered are indicated in the scope of this International Standard.

kSIST prEN ISO 20361:2009
kSIST prEN ISO 20361:2009

INTERNATIONAL STANDARD ISO 20361:2007(E) © ISO 2007 – All rights reserved 1Liquid pumps and pump units — Noise test code — Grades 2 and 3 of accuracy 1 Scope This International Standard specifies all the information necessary to carry out efficiently and under standardized conditions the determination, declaration and verification of the airborne noise emission of liquid pumps or pump units (see 4.1). It specifies the noise measurement methods and the operating and mounting conditions that shall be used for the test. Noise emission characteristics include emission sound pressure levels at specified positions and the sound power level. The determination of these quantities is necessary for ⎯ declaring the noise emission values, ⎯ purpose of noise control at source at the design stage. NOTE 1 The determination of these quantities is also necessary for comparing the noise emitted by liquid pumps on the market. The use of this International Standard ensures the reproducibility of the determination of the airborne noise-emission characteristics within specified limits determined by the grade of accuracy of the basic airborne noise measurement method used. Noise measurement methods according to this International Standard are engineering methods (grade 2) and survey methods (grade 3). This International Standard does not deal with the characterization of the structure-borne sound and liquid-borne noise generated by liquid pumps. NOTE 2 This International Standard is intended to complement EN 809, Pumps and pump units for liquids — Common safety requirements. 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. ISO 3743-11), Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering method for small, movable sources in reverberant fields — Part 1: Comparison method for a hard-walled test room ISO 3743-2, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for small, movable sources in reverberant fields — Part 2: Methods for special reverberation test rooms ISO 37442), Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane

1) To be published. (Revision of ISO 3743-1:1994) 2) To be published. (Revision of ISO 3744:1994) kSIST prEN ISO 20361:2009

ISO 20361:2007(E) 2 © ISO 2007 – All rights reserved ISO 37463), Acoustics — Determination of sound power levels of noise sources using sound pressure — Survey method using an enveloping measurement surface over a reflecting plane ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and equipment ISO/TR 7849, Acoustics — Estimation of airborne noise emitted by machinery using vibration measurement ISO 9614-1, Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points ISO 9614-2:1996, Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 2: Measurement by scanning ISO 11203:1995, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at the work station and at other specified positions from the sound power level ISO 12100-1, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology ISO 12100-2, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles ISO 17769, Liquid pumps — General terms and installation — Definitions, quantities, letter symbols and units 3 Terms and definitions For the purposes of this document, the definitions given in ISO 17769 and the following apply. 3.1 pump equipment that is defined as being terminated by its inlet and outlet branches as well as in general its shaft ends 3.2 pump unit equipment that is comprised of the pump as described in 3.1 and its driver (e.g. electric motor, steam turbine) including transmission elements (e.g. coupling, gear), baseplates and any auxiliary equipment

supplied with the pump 4 Pump family and pump configuration 4.1 Pumps covered by this International Standard comprise liquid pumps of the rotodynamic and positive displacement, rotary and reciprocating types. 4.2 This International Standard provides two possibilities of measurement, either pump alone (see Table 1), or pump units (see Table 2). In these two cases, the pumps shall be installed ⎯ on site (see 7.2.2), or ⎯ on shop test stand (see 7.2.3), or ⎯ in a specific facility intended for acoustic measurement (see 7.2.4).

3) To be published. (Revision of ISO 3746:1995) kSIST prEN ISO 20361:2009

ISO 20361:2007(E) © ISO 2007 – All rights reserved 34.3 Safety guards, e.g. coupling guards, insulation hoods etc., if any, shall be installed during noise-emission determination. 5 Sound power level determination 5.1 General One of the following grade 2 of accuracy methods for determining the sound power level shall

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