IEC 60068-3-5:2018
(Main)Environmental testing - Part 3-5: Supporting documentation and guidance - Confirmation of the performance of temperature chambers
Environmental testing - Part 3-5: Supporting documentation and guidance - Confirmation of the performance of temperature chambers
IEC 60068-3-5:2018 provides a uniform and reproducible method of confirming that temperature test chambers, without specimens, conform to the requirements specified in climatic test procedures of IEC 60068-2 (all parts) and other standards. This document is intended for users when conducting regular chamber performance monitoring. This second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Confirmation procedures are clarified.
This bilingual version (2019-05) corresponds to the monolingual English version, published in 2018-01.
The French version of this standard has not been voted upon.
Essais d'environnement - Partie 3-5: Documentation d’accompagnement et guide - Confirmation des performances des chambres d’essai en température
L’IEC 60068-3-5:2018 fournit une méthode uniforme et reproductible pour confirmer que les chambres d’essai en température, sans spécimens, sont conformes aux exigences spécifiées dans les méthodes d’essai climatique de l’IEC 60068-2 (toutes les parties) et d’autres normes. Ce document est destiné à aider les utilisateurs lorsqu’ils réalisent des contrôles réguliers des performances de leur chambre d’essai.
Cette deuxième édition annule et remplace la première édition, parue en 2001. Elle constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
- Les procédures de confirmation sont clarifiées.
La présente version bilingue (2019-05) correspond à la version anglaise monolingue publiée en 2018-01.
La version française de cette norme n'a pas été soumise au vote.
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IEC 60068-3-5 ®
Edition 2.0 2018-01
REDLINE VERSION
INTERNATIONAL
STANDARD
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inside
Environmental testing –
Part 3-5: Supporting documentation and guidance – Confirmation of the
performance of temperature chambers
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IEC 60068-3-5 ®
Edition 2.0 2018-01
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Environmental testing –
Part 3-5: Supporting documentation and guidance – Confirmation of the
performance of temperature chambers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 19.040 ISBN 978-2-8322-5318-2
– 2 – IEC 60068-3-5:2018 RLV © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Measuring chamber performances . 9
4.1 Test area environment . 9
4.2 Temperature measurement system . 9
4.3 Temperature chamber test loads specimens . 9
4.4 Installation Specified location of temperature sensors in working space . 9
4.5 Determination of temperature performance Measurement method . 11
4.5.1 General . 11
4.5.2 Achieved temperature . 11
4.5.3 Temperature stabilization . 11
4.5.4 Temperature fluctuation . 12
4.5.5 Temperature gradient . 13
4.5.6 Temperature variation in space . 14
4.5.7 Temperature rate of change . 14
4.6 Standard temperature sequence . 15
Evaluation criteria .
5 Information to be given in the performance test report . 16
Bibliography . 17
Figure 1 – Working space . 7
Figure 2 – Example of temperature differences . 8
Figure 3 – Location of air temperature sensors for temperature chambers up to 2 000 l . 10
Figure 4 – Location of minimal additional air temperature sensors for temperature
chambers over 2 000 l . 10
Figure 5 – Example of achieved temperature . 11
Figure 6 – Example of temperature stabilization for chambers up to 2 000 l . 12
Figure 7 – Example of temperature fluctuation . 12
Figure 8 – Example of temperature gradient for chambers up to 2 000 l . 13
Figure 9 – Example of temperature gradient for chambers <2 000 L . 14
Figure 10 – Example of temperature rate of change for heating and cooling of a test
chamber . 15
Table 1 – Practical dimensions . 8
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 3-5: Supporting documentation and guidance –
Confirmation of the performance of temperature chambers
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 reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent 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. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
– 4 – IEC 60068-3-5:2018 RLV © IEC 2018
International Standard IEC 60068-3-5 has been prepared by IEC technical committee 104:
Environmental conditions, classification and methods of test.
This second edition cancels and replaces the first edition published in 2001. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Confirmation procedures are clarified.
The text of this International Standard is based on the following documents:
FDIS Report on voting
104/759/FDIS 104/778/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60068 series, published under the general title Environmental
testing, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.
INTRODUCTION
IEC 60068 (all parts) contains fundamental information on environmental testing procedures
and severities.
The expression "environmental conditioning" or "environmental testing" covers the natural and
artificial environments to which components or equipment may be exposed so that an
assessment can be made of their performance under conditions of use, transport and storage
to which they may be exposed in practice.
Temperature chambers used for "environmental conditioning" or "environmental testing" are
not described in any publication, although the method of maintaining and measuring
temperature and/or humidity has a great influence on test results. The physical characteristics
of temperature chambers can also influence test results.
– 6 – IEC 60068-3-5:2018 RLV © IEC 2018
ENVIRONMENTAL TESTING –
Part 3-5: Supporting documentation and guidance –
Confirmation of the performance of temperature chambers
1 Scope
This part of IEC 60068 provides a uniform and reproducible method of confirming that
temperature test chambers, without load specimens, conform to the requirements specified in
climatic test procedures of IEC 60068-2 (all parts) and other standards. This document is
intended for users when conducting regular chamber performance monitoring.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only
...
IEC 60068-3-5 ®
Edition 2.0 2018-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 3-5: Supporting documentation and guidance – Confirmation of the
performance of temperature chambers
Essais d’environnement –
Partie 3-5: Documentation d’accompagnement et guide – Confirmation des
performances des chambres d’essai en température
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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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
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.
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and withdrawn publications. Also known as the International Electrotechnical Vocabulary
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IEC 60068-3-5 ®
Edition 2.0 2018-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 3-5: Supporting documentation and guidance – Confirmation of the
performance of temperature chambers
Essais d’environnement –
Partie 3-5: Documentation d’accompagnement et guide – Confirmation des
performances des chambres d’essai en température
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.040 ISBN 978-2-8322-6968-8
– 2 – IEC 60068-3-5:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Measuring chamber performances . 8
4.1 Test area environment . 8
4.2 Temperature measurement system . 8
4.3 Temperature chamber test specimens . 8
4.4 Specified location of temperature sensors in working space . 9
4.5 Measurement method . 10
4.5.1 General . 10
4.5.2 Achieved temperature . 10
4.5.3 Temperature stabilization . 10
4.5.4 Temperature fluctuation . 11
4.5.5 Temperature gradient . 12
4.5.6 Temperature variation in space . 12
4.5.7 Temperature rate of change . 13
4.6 Standard temperature sequence . 14
5 Information to be given in the performance test report . 14
Bibliography . 16
Figure 1 – Working space . 7
Figure 2 – Example of temperature differences . 8
Figure 3 – Location sensors for temperature chambers up to 2 000 l . 9
Figure 4 – Location of minimal additional sensors for temperature chambers
over 2 000 l . 9
Figure 5 – Example of achieved temperature . 10
Figure 6 – Example of temperature stabilization for chambers up to 2 000 l . 11
Figure 7 – Example of temperature fluctuation . 11
Figure 8 – Example of temperature gradient for chambers up to 2 000 l . 12
Figure 9 – Example of temperature gradient for chambers <2 000 L . 13
Figure 10 – Example of temperature rate of change . 14
Table 1 – Practical dimensions . 7
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 3-5: Supporting documentation and guidance –
Confirmation of the performance of temperature chambers
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 reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60068-3-5 has been prepared by IEC technical committee 104:
Environmental conditions, classification and methods of test.
This bilingual version (2019-05) corresponds to the monolingual English version, published in
2018-01.
This second edition cancels and replaces the first edition published in 2001. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Confirmation procedures are clarified.
– 4 – IEC 60068-3-5:2018 © IEC 2018
The text of this International Standard is based on the following documents:
FDIS Report on voting
104/759/FDIS 104/778/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
The French version of this standard has not been voted upon.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60068 series, published under the general title Environmental
testing, can be found on the IEC website.
...
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