ISO 16063-21:2003/FDAmd 2

Methods for the calibration of vibration and shock transducers — Part 21: Vibration calibration by comparison to a reference transducer — Amendment 2

Méthodes pour l'étalonnage des transducteurs de vibrations et de chocs — Partie 21: Étalonnage de vibrations par comparaison à un transducteur de référence — Amendement 2

General Information

• Status: Not Published
• ICS: 17.160 - Vibrations, shock and vibration measurements
• Technical Committee: ISO/TC 108 - Mechanical vibration, shock and condition monitoring
• Drafting Committee: ISO/TC 108 - Mechanical vibration, shock and condition monitoring
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 03-Sep-2024
• Completion Date: 03-Sep-2024

Relations

• Amends: ISO 16063-21:2003 - Methods for the calibration of vibration and shock transducers — Part 21: Vibration calibration by comparison to a reference transducer
• Effective Date: 17-Sep-2022

Standards Content (Sample)

FINAL DRAFT
Amendment
ISO 16063-21:2003/
FDAM 2
ISO/TC 108
Methods for the calibration of
Secretariat: BSI
vibration and shock transducers —
Voting begins on:
2024-09-03
Part 21:
Vibration calibration by comparison
Voting terminates on:
2024-10-29
to a reference transducer
AMENDMENT 2
Méthodes pour l'étalonnage des transducteurs de vibrations et de
chocs —
Partie 21: Étalonnage de vibrations par comparaison à un
transducteur de référence
AMENDEMENT 2
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO 16063-21:2003/FDAM 2:2024(en) © ISO 2024

FINAL DRAFT
ISO 16063-21:2003/FDAM 2:2024(en)
Amendment
ISO 16063-21:2003/
FDAM 2
ISO/TC 108
Methods for the calibration of
Secretariat: BSI
vibration and shock transducers —
Voting begins on:
Part 21:
Vibration calibration by comparison
Voting terminates on:
to a reference transducer
AMENDMENT 2
Méthodes pour l'étalonnage des transducteurs de vibrations et
de chocs —
Partie 21: Étalonnage de vibrations par comparaison à un
transducteur de référence
AMENDEMENT 2
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO 16063-21:2003/FDAM 2:2024(en) © ISO 2024

ii
ISO 16063-21:2003/FDAM 2:2024(en)
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 document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 108, Mechanical vibration, shock and condition
monitoring.
A list of all parts in the ISO 16063 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iii
ISO 16063-21:2003/FDAM 2:2024(en)
Methods for the calibration of vibration and shock
transducers —
Part 21:
Vibration calibration by comparison to a reference
transducer
AMENDMENT 2
Introduction
Add the following paragraph at the end of the Introduction:
ISO 16063-21:2003/Amd 2 aims to explain better the use of reference transducers, different calibration set-
ups and opens up the frequency limits for the applicable calibration range.

1  Scope
Add the following sentence at the end of the scope before the NOTE:
"This document is applicable to calibrations outside the frequency range from 0,4 Hz to 10 kHz, considering
the additional facts described in 4.3. Systems have been demonstrated to cover the range from 0,01 Hz to
30 kHz."
4.3
Replace the last but one paragraph by the following:
"The reference transducer may be of the back-to-back type meant for direct mounting of the transducer to
be calibrated on top of it, in a back-to-back configuration, see Figure 1 a). It may also be a transducer used in
a fixture, see Figure 1 b), or underneath the exciter mounting platform (built-in reference transducer), see
Figure 1 c), always in line with the transducer to be calibrated. In the setup shown in Figure 1 c) the reference
might even be an integral part of the exciter (which means it cannot be detached). To reduce the influence
of rocking motions, the centres of the seismic elements of both transducers should be superimposed on one
axis coinciding with the axis of vibration. It is not recommended to mount the two transducers side by side
as rocking motions will often be present, causing large errors in many circumstances.
For low frequency calibrations requiring measurements below a few Hz, long stroke exciters a
...

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ISO 16063-21:2003/FDAMFDAmd 2:2024(en)
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ISO /TC 108/WG 34
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Secretariat: BSI
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Date: 2024-08-02xx
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Methods for the calibration of vibration and shock transducers —
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Part 21: Style Definition
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Vibration calibration by comparison to a reference transducer — Style Definition
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AMENDMENT 2
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Méthodes pour l'étalonnage des transducteurs de vibrations et de chocs —
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Partie 21: Étalonnage de vibrations par comparaison à un transducteur de référence — Amendement
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FDIS stage
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St l D fi iti
ISO 16063-21:2003/FDAMFDAmd 2:2024(E(en) Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Formatted: Font: Bold
Formatted: HeaderCentered
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
Formatted: Right: 1.5 cm, Bottom: 1 cm, Gutter: 0 cm,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
Header distance from edge: 1.27 cm, Footer distance
at the address below or ISO’s member body in the country of the requester.
from edge: 0.5 cm
Formatted: Default Paragraph Font
ISO copyright office
CP 401 • Ch. de Blandonnet 8
Formatted: Default Paragraph Font
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Formatted: French (France)
EmailE-mail: [e-mail]
Formatted: French (France)
Website: www.iso.orgwww.iso.org
Formatted: French (France)
Published in Switzerland
Formatted: Font: 11 pt
Formatted: FooterPageRomanNumber, Space After: 0
pt, Line spacing: single
2 © ISO 2023 – All rights reserved
ii
ISO 16063-21:2003/FDAMFDAmd 2:2024(en)
Formatted: Font: Bold
Formatted: Font: Bold
Formatted: Font: Bold
Foreword
Formatted: HeaderCentered, Left
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 document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Formatted: English (United Kingdom)
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 108, Mechanical vibration, shock and condition
monitoring.
A list of all parts in the ISO 16063 series can be found on the ISO website.
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
Any feedback or questions on this document should be directed to the user’s national standards body. A
Formatted: Default Paragraph Font
complete listing of these bodies can be found at www.iso.org/members.html.www.iso.org/members.html.
Formatted: Font: 10 pt
Formatted: Font: 10 pt
Formatted: Font: 10 pt
Formatted: FooterCentered, Left, Space Before: 0 pt,
Tab stops: Not at 17.2 cm
Formatted: Font: 11 pt
Formatted: FooterPageRomanNumber, Left, Space
After: 0 pt, Tab stops: Not at 17.2 cm
© ISO 2024 – All rights reserved
iii
ISO 16063-21:2003/FDAM 2:2024(en)
Formatted: Left
Formatted: Right: 1.5 cm, Bottom: 1 cm, Gutter: 0 cm,
Methods for the calibration of vibration and shock transducers — Header distance from edge: 1.27 cm, Footer distance
from edge: 0.5 cm
Part 21:
Vibration calibration by comparison to a reference transducer

Formatted: Main Title 2, Adjust space between Latin
AMENDMENT 2
and Asian text, Adjust space between Asian text and
numbers
Introduction
Add the following paragraph at the end of the Introduction:
ISO 16063-21:2003/Amd 2:— aims to explain better the use of reference transducers, different calibration
Formatted: Default Paragraph Font
set-ups and opens up the frequency limits for the applicable calibration range.
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font

Formatted: Default Paragraph Font
1  Scope
Add the following sentence at the end of the scope before the NOTE:
"This document is applicable to calibrations outside the frequency range from 0,4 Hz to 10 kHz, considering
the additional facts described in 4.3. Systems have been demonstrated to cover the range from 0,01 Hz to
30 kHz."
4.3
Replace the last but one paragraph by the following:
"The reference transducer may be of the back-to-back type meant for direct mounting of the transducer to be
calibrated on top of it, in a back-to-back configuration, see Figure 1 a). It may also be a transducer used in a
fixture, see Figure 1 b), or underneath the exciter mounting platform (built-in reference transducer), see
Figure 1 c), always in line with the transducer to be calibrated. In the setup shown in Figure 1 c) the reference
might even be an integral part of the exciter (which means it cannot be detached). To reduce the influence of
rocking motions, the centres of the seismic elements of both transducers should be superimposed on one axis
coinciding with the axis of vibration. It is not recommended to mount the two transducers side by side as
rocking motions will often be present, causing large errors in many circumstances.
For low frequency calibrations requiring measurements below a few Hz, long stroke exciters are used giving
displacements of 100 mm or more. The setups are normally like the one shown schematically in Figure 2. The
principle is the same as Figure 1 b) but the armature is a sledge driven by an electromagnetic system or
otherwise. The sledge configuration permits heavy transducers to be calibrated. Some transducers (e.g.
seismometers) are sensitive in the transverse direction with respect to their mounting surface. Th
...