Ultrasonics - Hydrophones - Part 3: Properties of hydrophones for ultrasonic fields

IEC 62127-3:2022 is available as IEC 62127-3:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 62127-3:2022 specifies relevant hydrophone characteristics. This document is applicable to:
- hydrophones employing piezoelectric sensor elements, designed to measure the pulsed and continuous wave ultrasonic fields generated by ultrasonic equipment;
- hydrophones used for measurements made in water;
- hydrophones with or without an associated pre-amplifier.
IEC 62127-3:2022 cancels and replaces the first edition published in 2007 and Amendment 1:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition.
a) The upper frequency limit of 40 MHz has been removed.
b) Hydrophone sensitivity definitions have been changed to recognize sensitivities as complex-valued quantities.
c) Procedures to determine the effective hydrophone size have been changed according to the rationale outlined in Annex B.
d) Requirements on the frequencies for which the effective hydrophone size shall be provided have been changed to achieve practicality for increased frequency bands.
e) The new Annex B and Annex C have been added.
f) Annex A has been updated to reflect the changes of the normative parts.

Ultrasons - Hydrophones - Partie 3: Propriétés des hydrophones pour les champs ultrasoniques

IEC 62127-3:2022 est disponible sous forme de IEC 62127-3:2022 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 62127-3:2022 spécifie les caractéristiques pertinentes des hydrophones. Le présent document s'applique:
- aux hydrophones qui utilisent des capteurs piézoélectriques conçus pour mesurer les champs ultrasoniques à ondes par impulsions et entretenues générés par les appareils à ultrasons;
- aux hydrophones utilisés pour les mesurages réalisés dans l'eau;
- aux hydrophones avec ou sans préamplificateur associé.
L'IEC 62127-3:2022 annule et remplace la première édition parue en 2007 et son amendement 1:2013. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente.
a) La limite de fréquence supérieure de 40 MHz a été supprimée.
b) Les définitions de la sensibilité de l'hydrophone ont été modifiées afin de reconnaître les sensibilités comme des grandeurs à valeur complexe.
c) Les procédures de détermination de la taille efficace de l'hydrophone ont été modifiées conformément à la justification donnée à l'Annexe B.
d) Les exigences relatives aux fréquences pour lesquelles doit être fournie la taille efficace de l'hydrophone ont été modifiées afin de tenir compte des bandes de fréquences supérieures.
e) De nouvelles annexes ont été ajoutées (Annexe B et Annexe C).
f) L'Annexe A a été mise à jour afin de refléter les modifications apportées aux parties normatives.

General Information

Status
Published
Publication Date
18-Dec-2022
Technical Committee
Drafting Committee
Current Stage
PPUB - Publication issued
Start Date
13-Jan-2023
Completion Date
19-Dec-2022
Ref Project

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IEC 62127-3 ®
Edition 2.0 2022-12
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Ultrasonics – Hydrophones –
Part 3: Properties of hydrophones for ultrasonic fields up to 40 MHz

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 IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
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need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC 62127-3 ®
Edition 2.0 2022-12
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Ultrasonics – Hydrophones –
Part 3: Properties of hydrophones for ultrasonic fields up to 40 MHz
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 17.140.50 ISBN 978-2-8322-6313-6
– 2 – IEC 62127-3:2022 RLV © IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and symbols. 7
4 List of symbols . 11
5 Hydrophone characteristics . 12
5.1 General . 12
5.2 Basic information . 12
5.3 Sensitivity . 12
5.4 Frequency response . 13
5.4.1 Stated frequency band . 13
5.4.2 Frequency dependence . 13
5.5 Directional response . 14
5.5.1 General . 14
5.5.2 Determination of the directional response . 14
5.5.3 Symmetry of directional response . 15
5.6 Effective radius .
5.6 Effective hydrophone size . 16
5.6.1 General . 16
5.6.2 Model of directional response . 16
5.6.3 Fitting of experimental response to theoretical predictions . 17
5.7 Dynamic range, linearity and electromagnetic interference . 18
5.8 Electric output characteristics . 18
5.8.1 Hydrophone without pre-amplifier . 18
5.8.2 Hydrophone assembly . 19
5.8.3 Output lead configuration . 19
5.9 Environmental aspects . 20
5.9.1 Temperature range . 20
5.9.2 Water tightness . 20
5.9.3 Water properties and incompatible materials . 20
5.9.4 Exposed material . 20
5.10 Guidance manual . 20
5.11 List of hydrophone characteristics . 20
Annex A (informative) Examples of information on hydrophone properties . 21
A.1 General . 21
A.2 Basic information . 21
A.3 Sensitivity and frequency response . 21
A.4 Directional response . 24
A.5 Effective radius dimension . 26
A.6 Dynamic range, linearity and electromagnetic interference . 28
A.6.1 Lower dynamic limit . 28
A.6.2 Upper dynamic limit . 28
A.7 Electric output characteristics . 28
A.8 Environmental aspects . 28
Annex B (informative) Rationale . 30

B.1 General . 30
B.2 Changes to the determination of directional response . 30
B.3 Changes to the determination of effective radius . 30
Annex C (informative) Membrane hydrophone directivity model . 32
C.1 General . 32
C.2 Details of model . 32
Bibliography . 33

Figure A.1 – Frequency response of 0,2 mm needle hydrophone .
Figure A.1 – Frequency response of 0,2 mm needle hydrophone in the range 1 MHz to
40 MHz . 23
Figure A.2 – Frequency response of 0,2 mm needle hydrophone in the range 100 kHz
to 1 MHz . 23
Figure A.3 – Directional response of 0,2 mm needle hydrophone . 26
Figure A.4 – Effective radius of 0,2 mm needle hydrophone . 27
Figure A.5 – Comparison of modelled and experimentally derived directional response . 27

Table A.1 – Example of basic information for 0,2 mm needle hydrophone assembly . 21

– 4 – IEC 62127-3:2022 RLV © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ULTRASONICS – HYDROPHONES –
Part 3: Properties of hydrophones for ultrasonic fields up to 40 MHz

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
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rights. IEC shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition IEC 62127-3:2007+AMD1:2013 CSV. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in strikethrough
red text.
IEC 62127-3 has been prepared by IEC technical committee 87: Ultrasonics. It is an
International Standard.
This second edition cancels and replaces the first edition published in 2007 and
Amendment 1:2013. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition.
a) The upper frequency limit of 40 MHz has been removed.
b) Hydrophone
...


IEC 62127-3 ®
Edition 2.0 2022-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Ultrasonics – Hydrophones –
Part 3: Properties of hydrophones for ultrasonic fields

Ultrasons – Hydrophones –
Partie 3: Propriétés des hydrophones pour les champs ultrasoniques

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 IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
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Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 19 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
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need further assistance, please contact the Customer Service
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IEC 62127-3 ®
Edition 2.0 2022-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Ultrasonics – Hydrophones –
Part 3: Properties of hydrophones for ultrasonic fields

Ultrasons – Hydrophones –
Partie 3: Propriétés des hydrophones pour les champs ultrasoniques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.50 ISBN 978-2-8322-6210-8

– 2 – IEC 62127-3:2022 © IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and symbols. 7
4 List of symbols . 11
5 Hydrophone characteristics . 11
5.1 General . 11
5.2 Basic information . 11
5.3 Sensitivity . 12
5.4 Frequency response . 13
5.4.1 Stated frequency band . 13
5.4.2 Frequency dependence . 13
5.5 Directional response . 13
5.5.1 General . 13
5.5.2 Determination of the directional response . 13
5.5.3 Symmetry of directional response . 14
5.6 Effective hydrophone size . 15
5.6.1 General . 15
5.6.2 Model of directional response . 15
5.6.3 Fitting of experimental response to theoretical predictions . 16
5.7 Dynamic range, linearity and electromagnetic interference . 16
5.8 Electric output characteristics . 17
5.8.1 Hydrophone without pre-amplifier . 17
5.8.2 Hydrophone assembly . 18
5.8.3 Output lead configuration . 18
5.9 Environmental aspects . 18
5.9.1 Temperature range . 18
5.9.2 Water tightness . 18
5.9.3 Water properties and incompatible materials . 18
5.9.4 Exposed material . 18
5.10 Guidance manual . 19
5.11 List of hydrophone characteristics . 19
Annex A (informative) Examples of information on hydrophone properties . 20
A.1 General . 20
A.2 Basic information . 20
A.3 Sensitivity and frequency response . 20
A.4 Directional response . 23
A.5 Effective dimension . 23
A.6 Dynamic range, linearity and electromagnetic interference . 25
A.6.1 Lower dynamic limit . 25
A.6.2 Upper dynamic limit . 25
A.7 Electric output characteristics . 25
A.8 Environmental aspects . 25
Annex B (informative) Rationale . 27

B.1 General . 27
B.2 Changes to the determination of directional response . 27
B.3 Changes to the determination of effective radius . 27
Annex C (informative) Membrane hydrophone directivity model . 29
C.1 General . 29
C.2 Details of model . 29
Bibliography . 30

Figure A.1 – Frequency response of 0,2 mm needle hydrophone in the range 1 MHz to
40 MHz . 21
Figure A.2 – Frequency response of 0,2 mm needle hydrophone in the range 100 kHz
to 1 MHz . 22
Figure A.3 – Directional response of 0,2 mm needle hydrophone . 23
Figure A.4 – Effective radius of 0,2 mm needle hydrophone . 24
Figure A.5 – Comparison of modelled and experimentally derived directional response . 24

Table A.1 – Example of basic information for 0,2 mm needle hydrophone assembly . 20

– 4 – IEC 62127-3:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ULTRASONICS – HYDROPHONES –
Part 3: Properties of hydrophones for ultrasonic fields

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasona
...

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