Electrical and electronic measurement equipment - Expression of performance

Applies to the specification of performance, with primary reference to industrial applications, of the following kinds of electrical and electronic equipment: - indicating and recording instruments which measure electrical quantities; - material measures which supply electrical quantities; - instruments which measure non-electrical quantities using electrical means, for all parts of the measuring chain which present electrical output signals. It is based on the methods expounded in GUM for expressing and evaluating the uncertainty of measurement, and refers to GUM for the statistical procedures to be used in determining the intervals assigned to represent uncertainty (including the way to account for non-negligible uncertainties in the traceability chain). The object is to provide methods for ensuring uniformity in the specification and determination of uncertainties of equipment within its scope. All other necessary requirements have been reserved for dependent IEC product standards pertaining to particular types of equipment which fall within the scope of this standard.

Elektrische und elektronische Messeinrichtungen - Angabe zum Betriebsverhalten

Appareils de mesure électriques et électroniques - Expression des performances

S'applique à la spécification des performances, notamment dans le cadre des applications industrielles, des types d'appareils électriques et électroniques suivants: - appareils indicateurs et enregistreurs de mesure des grandeurs électriques; - dispositifs matériels fournissant des grandeurs électriques; - appareils mesurant des grandeurs non électriques par des moyens électriques, pour toute la partie de la chaîne de mesure où sont présents des signaux de sortie électriques. Elle repose sur les méthodes exposées dans le GUM pour l'expression et l'évaluation de l'incertitude des mesures, et renvoie à ce même document pour les procédures statistiques à employer en vue de déterminer les intervalles définis pour représenter l'incertitude (y compris la façon de prendre en compte les incertitudes non négligeables dans la chaîne de traçabilité). Son objet est de fournir des méthodes assurant une homogénéité dans la spécification et la détermination des incertitudes des appareils visés. Toutes les autres prescriptions nécessaires ont été réservées à des normes de produit de la CEI relatives à des types d'équipements particuliers tombant dans le domaine d'application de la présente norme.

Električna in elektronska merilna oprema – Izražanje lastnosti (IEC 60359:2001)

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SIST IEC 60359:1995
Electrical and electronic measurement equipment - Expression of performance
Elektrische und elektronische Messeinrichtungen - Angabe zum Betriebsverhalten
Appareils de mesure électriques et électroniques - Expression des performances
Ta slovenski standard je istoveten z: EN 60359:2002
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ICS 17.220.20
English version
Electrical and electronic measurement equipment -
Expression of performance
(IEC 60359:2001)
Appareils de mesure électriques Elektrische und elektronische
et électroniques - Messeinrichtungen -
Expression des performances Angabe zum Betriebsverhalten
(CEI 60359:2001) (IEC 60359:2001)
This European Standard was approved by CENELEC on 2002-03-01. CENELEC 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 Central Secretariat or to any CENELEC 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 CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60359:2002 E
The text of document 85/219/FDIS, future edition 3 of IEC 60359, prepared by IEC TC 85, Measuring
equipment for electrical and electromagnetic quantities, was submitted to the IEC-CENELEC parallel
vote and was approved by CENELEC as EN 60359 on 2002-03-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-03-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A and B are informative.
Annex ZA has been added by CENELEC.
Endorsement notice
The text of the International Standard IEC 60359:2001 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
IEC 60051 (Series) NOTE Harmonized as EN 60051 (Series) (not modified).
IEC 60068 (Series) NOTE Harmonized as EN 60068 (Series) (not modified).
IEC 60529 NOTE Harmonized as EN 60529:1991 (not modified).
IEC 60654 (Series) NOTE Harmonized as EN 60654 (Series) (not modified).
IEC 60721-3-0 NOTE Harmonized as HD 478.3.0 S1:1987 (not modified).
IEC 60851-5 NOTE Harmonized as EN 60851-5:1996 (not modified).
- 3 - EN 60359:2002
Annex ZA
Normative references to international publications
with their corresponding European publications
This European Standard incorporates, by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references, the latest edition of the publication referred to applies (including
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-300 2001 International Electrotechnical --
Vocabulary - Electrical and electronic
measurements and measuring
Part 311: General terms relating to
measurements -
Part 312: General terms relating to
electrical measurements -
Part 313: Types of electrical measuring
instruments -
Part 314: Specific terms according to
the type of instrument
ISO/IEC GUIDE 1995 Guide to the expression of uncertainty--
EXPRES in measurement (GUM)
Troisième édition
Third edition
Appareils de mesure électriques
et électroniques –
Expression des performances
Electrical and electronic measurement
equipment –
Expression of performance
 IEC 2001 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60359 © IEC:2001 – 3 –
1 Scope and object.11
2 Normative references .11
3 Definitions .13
4 Specification of values and ranges .31
5 Requirements for IEC standards related to the equipment .33
6 Specification of limits of uncertainty.33
7 Specification of influence quantities.49
8 General rules for compliance testing.53
Annex A (informative) Conceptual and terminological evolution from "error" to
"uncertainty" .55
Annex B (informative) Steps in the specification of performance .63
Figure 1 – Calibration diagram.35
Figure 2 – Calibration diagram with scale marks in units of measurement .37
Figure 3 – Calibration diagram in different operating conditions .41
Figure 4 – Calibration diagram for extended operating conditions .43
Figure B.1 – Steps in the specification of performance.63

60359 © IEC:2001 – 5 –
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use published in the form of
standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60359 has been prepared by IEC technical committee 85:
Measuring equipment for electrical and electromagnetic quantities.
This third edition cancels and replaces the second edition published in 1987 and its
amendment 1 (1991), of which it constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
85/219/FDIS 85/220/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This International Standard was prepared by IEC TC 85 following its resolution 85/45/AC of
1994-12-16 “to revise the IEC 60359, taking into account the "Guide to the Expression of
Uncertainty in Measurement" (GUM) published by ISO in 1993”.
The main technical changes from the previous edition of this International Standard consist in
adapting the requirements on the instrument performance to the approach on uncertainty
taken by the GUM, adapting the terminology to the new edition of the IEV, and offering a
wider and more correct choice of options in specifying the limits of uncertainty.

60359 © IEC:2001 – 7 –
Annexes A and B are for information only.
The committee has decided that the contents of this publication will remain unchanged until
2005-12. At this date, the publication will be:
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
60359 © IEC:2001 – 9 –
With the appearance of the interorganizational Guide to the expression of uncertainty in
measurement (GUM) that embodied the suggestions of CIPM Recommendation CI-1981, it
became clear that the classical approach to the precision and accuracy of measurement in
terms of true value and error is being superseded by the approach in terms of uncertainty.
The intrinsic pitfalls of the concept of true value (hence of error) had indeed led the operative
measurement world to rely increasingly on the concept of uncertainty, notwithstanding that the
main body of standards concerning the performance of measuring instruments was still written
in terms of the traditional approach. The widening gap between the best practice in metrology
and the wording of the standards prompted the normative organizations to invite their
Technical Committees to update these publications.
This new edition of the International Standard IEC 60359 was prepared in order to bring it into
agreement with the GUM. During the procedure for its approval the chapters on measurement
of the new edition of the International Electrotechnical Vocabulary (IEV) were published, and
the opportunity was taken to bring the standard into agreement with the terms used in the
The main performance characteristics of an instrument are those related to the uncertainty of
the results obtained by using the instrument. The GUM provides a general terminology and a
computational framework for combining uncertainties of different origin, but it substantially
deals with the issue of evaluating uncertainty in the measurement of a quantity defined as a
function of other measured quantities, and does not address the issue of evaluating
instrumental uncertainty, i.e. the uncertainty of the results of the single direct measurements
carried out by the instruments. The GUM treats it as a component of uncertainty of categ

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