FprEN IEC 62127-2:2024
(Main)Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields
Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields
IEC 62127-2:2025 specifies: - absolute hydrophone calibration methods; - relative (comparative) hydrophone calibration methods. Recommendations and references to accepted literature are made for the various relative and absolute calibration methods in the frequency range covered by this document. This document is applicable to - hydrophones used for measurements made in water and in the ultrasonic frequency range 50 kHz to 100 MHz; - hydrophones employing piezoelectric sensor elements, designed to measure the pulsed wave and continuous wave ultrasonic fields generated by ultrasonic equipment; - hydrophones with or without a hydrophone pre-amplifier. IEC 62127-2:2025 cancels and replaces the first edition published in 2007, Amendment 1:2013 and Amendment 2:2017. 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) directional response measurement and effective size determination procedures have been updated in 12.5.1 to align with recent changes in IEC 62127-3; d) Annex F has been amended to comprise a calibration technique for high-frequency complex-valued calibration; e) the reciprocity method description in Annex K was extended to also comprise focusing transducers.
Ultraschall - Hydrophone - Teil 2: Kalibrierung für Ultraschallfelder
Ultrasons - Hydrophones - Partie 2: Etalonnage des champs ultrasoniques
L'IEC 60601-2-40:2025 s'applique à la SECURITE DE BASE et aux PERFORMANCES ESSENTIELLES des ELECTROMYOGRAPHES et des APPAREILS A POTENTIEL EVOQUE, désignés ci-après sous le terme APPAREILS EM. Si un article ou un paragraphe est spécifiquement destiné à être applicable uniquement aux APPAREILS EM, ou uniquement aux SYSTEMES EM, le titre et le contenu de cet article ou de ce paragraphe l’indiquent. Si cela n’est pas le cas, l’article ou le paragraphe s’applique à la fois aux APPAREILS EM et aux SYSTEMES EM, selon le cas. Les APPAREILS EM suivants sont exclus de la liste: - APPAREILS EM destinés à une application thérapeutique; - APPAREILS EM destinés à être utilisés avec les neurostimulateurs électriques transcutanés et les stimulateurs musculaires électriques (APPAREILS EM couverts par l'IEC 60601-2-10). L'IEC 60601-2-40:2024 annule et remplace la deuxième édition parue en 2016. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) des exigences relatives aux stimulateurs à tension constante ont été ajoutées; b) des exigences relatives aux STIMULATEURS VISUELS ont été clarifiées. L'IEC 62127-2:2024 spécifie: - les méthodes d'étalonnage absolues de l'hydrophone; - les méthodes d'étalonnage (comparatives) relatives de l'hydrophone. Des recommandations et des références à des documents validés sont indiquées pour les différentes méthodes d'étalonnage relatif et absolu dans la plage de fréquences couverte par le présent document. Le présent document s'applique: - aux hydrophones utilisés pour des mesurages réalisés dans l'eau et dans la plage de fréquences ultrasonores comprise entre 50 kHz et 100 MHz; - aux hydrophones qui utilisent des capteurs piézoélectriques, conçus pour mesurer les champs ultrasoniques à ondes pulsées et entretenues, générés par les équipements à ultrasons; - aux hydrophones avec ou sans préamplificateur d'hydrophone. L'IEC 62127-2:2025 annule et remplace la première édition parue en 2007, l'Amendement 1:2013 et l'Amendement 2:2017. 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 mesure de la réponse directionnelle et de détermination de la taille efficace ont été mises à jour au 12.5.1 pour s'aligner sur les modifications récentes de l'IEC 62127-3; d) l'Annexe F a été modifiée pour inclure une technique d'étalonnage pour l'étalonnage à haute fréquence à valeurs complexes; e) la description de la méthode par réciprocité de l'Annexe K a été élargie pour comprendre également les transducteurs à focalisation.
Ultrazvok - Hidrofoni - 2. del: Kalibracija za ultrazvočna polja
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 62127-2:2024
01-februar-2024
Ultrazvok - Hidrofoni - 2. del: Kalibracija za ultrazvočna polja
Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields
Ultrasons - Hydrophones - Partie 2: Etalonnage des champs ultrasoniques
Ta slovenski standard je istoveten z: prEN IEC 62127-2:2023
ICS:
11.040.01 Medicinska oprema na Medical equipment in general
splošno
17.140.50 Elektroakustika Electroacoustics
oSIST prEN IEC 62127-2:2024 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN IEC 62127-2:2024
oSIST prEN IEC 62127-2:2024
87/840/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62127-2 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-11-24 2024-02-16
SUPERSEDES DOCUMENTS:
87/826/CD, 87/831A/CC
IEC TC 87 : ULTRASONICS
SECRETARIAT: SECRETARY:
United Kingdom Mr Petar Luzajic
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they
are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In So me Countries” clauses
to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC
clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Ultrasonics – Hydrophones – Part 2: Calibration for ultrasonic fields
PROPOSED STABILITY DATE: 2027
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You
may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without permis sion
in writing from IEC.
oSIST prEN IEC 62127-2:2024
87/840/CDV – 2 – IEC CDV 62127-2 © IEC 2023
NOTE FROM TC/SC OFFICERS:
oSIST prEN IEC 62127-2:2024
IEC CDV 62127-2 © IEC 2023 – 3 – 87/840/CDV
1 CONTENTS
2 CONTENTS . 1
3 FOREWORD . 9
4 INTRODUCTION . 11
5 1 Scope . 12
6 2 Normative references . 12
7 3 Terms, definitions and symbols . 13
8 4 List of symbols . 21
9 5 Overview of calibration procedures . 23
10 5.1 Principles . 23
11 5.2 Summary of calibration procedures . 24
12 5.3 Reporting of results . 26
13 5.4 Recommended calibration periods . 28
14 6 Generic requirements of a hydrophone calibration system . 28
15 6.1 Mechanical positioning . 28
16 General . 28
17 Accuracy of the axial hydrophone position . 28
18 Accuracy of the lateral hydrophone position . 28
19 6.2 Temperature measurements and temperature stability . 29
20 6.3 Hydrophone size . 29
21 6.4 Measurement vessel and water properties . 29
22 6.5 Measurement of output voltage . 30
23 7 Electrical considerations . 30
24 7.1 Signal type . 30
25 7.2 Earthing . 30
26 7.3 Measurement of hydrophone output voltage . 31
27 General . 31
28 Electrical loading by measuring instrument . 31
29 Electrical loading by extension cables . 31
30 Noise . 31
31 Cross-talk (radio-frequency rf pick-up) and acoustic interference . 32
32 Integral hydrophone pre-amplifiers . 32
33 8 Preparation of hydrophones. 32
34 8.1 General . 32
35 8.2 Wetting . 32
36 8.3 Hydrophone support . 32
37 8.4 Influence of cable . 33
38 9 Free field reciprocity calibration . 33
39 9.1 General . 33
40 9.2 Object . 33
41 9.3 General principles . 33
42 General . 33
43 Three-transducer reciprocity calibration method . 33
44 Self-reciprocity calibration method . 33
45 Two-transducer reciprocity calibration method . 34
46 9.4 Two-transducer reciprocity calibration method . 34
oSIST prEN IEC 62127-2:2024
87/840/CDV – 4 – IEC CDV 62127-2 © IEC 2023
47 Auxiliary transducers . 34
48 Reflector . 34
49 Measurement field . 35
50 Reciprocity approach . 35
51 Measurement procedure . 35
52 10 Free field calibration by planar scanning. 35
53 10.1 General . 35
54 10.2 Object . 35
55 10.3 General principle . 35
56 10.4 Procedural requirements . 37
57 Hydrophone scanning . 37
58 10.5 Procedure . 37
59 Power measurement . 37
60 Transducer mounting . 37
61 Measurement conditions . 38
62 Measurements . 38
63 10.6 Corrections and sources of uncertainty . 38
64 11 Free field calibration by optical interferometry . 38
65 11.1 General . 38
66 11.2 Principle . 38
67 12 Calibration by comparison using a standard hydrophone . 39
68 12.1 General . 39
69 12.2 Object . 39
70 12.3 Principle . 39
71 12.4 Procedural requirements . 39
72 Source transducer . 39
73 Source transducer drive signal . 40
74 Measurement system . 40
75 12.5 Procedure . 40
76 Measurements (Type I): determination of the directional response of
77 a hydrophone . 40
78 Measurements (Type II): calibration by comparison using a standard
79 hydrophone . 41
80 12.6 Maximum hydrophone size . 41
81 Annex A (informative) Assessment of uncertainty in free field calibration of
82 hydrophones . 42
83 A.1 General . 42
84 A.2 Overall (expanded) uncertainty . 42
85 A.3 Common sources of uncertainty . 42
86 Annex B (informative) Behaviour of PVDF polymer sensors in high intensity ultrasonic
87 fields . 44
88 B.1 General . 44
89 B.2 Theoretical background . 44
90 B.3 Tests . 44
91 B.4 Results . 45
92 B.5 Conclusions . 46
93 Annex C (informative) Electrical loading corrections . 47
oSIST prEN IEC 62127-2:2024
IEC CDV 62127-2 © IEC 2023 – 5 – 87/840/CDV
94 C.1 General . 47
95 C.2 Corrections using complex impedance . 47
96 C.3 Corrections using only capacitances . 47
97 Annex D (informative) Absolute calibration of hydrophones using the planar scanning
98 technique .
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