SIST EN 60770-1:2011
(Main)Transmitters for use in industrial-process control systems - Part 1: Methods for performance evaluation (IEC 60770-1:2010)
Transmitters for use in industrial-process control systems - Part 1: Methods for performance evaluation (IEC 60770-1:2010)
This part of IEC 60770 is applicable to transmitters which have either a standard analogue electric current output signal or a standard pneumatic output analogue signal in accordance with IEC 60381-1 or IEC 60382. The tests detailed herein may be applied to transmitters which have other output signals, provided that due allowance is made for such differences. For the evaluation of the intelligent transmitters see IEC 60770-3. For certain types of transmitters where the sensor is an integral part, other specific IEC or ISO standards may need to be consulted (e.g. for chemical analysers, flowmeters, etc.) This standard is intended to specify uniform methods of test for the evaluation of the
performance of transmitters with pneumatic or electric output signals. The methods of evaluation specified in this standard are intended for use by manufacturers to determine the performance of their products and by users or independent testing establishments to verify manufacturers' performance specifications. The test conditions defined in this standard, for example the range of ambient temperatures and power supply, represent those which commonly arise in use. Consequently, the values specified herein should be used where no other values are specified by the manufacturer.
The tests specified in this standard are not necessarily sufficient for instruments specifically designed for unusually arduous or safety related duties. Conversely, a restricted series of test
may be suitable for instruments designed to perform within a more limited range of conditions. When a full evaluation in accordance with this standard is not required, those tests which are required shall be performed and the results reported in accordance with those parts of the standard which are relevant.
Messumformer für industrielle Prozessleittechnik - Teil 1: Methoden für die Bewertung des Betriebsverhaltens (IEC 60770-1:2010)
Transmetteurs utilisés dans les systèmes de conduite des processus industriels - Partie 1: Méthodes d’évaluation des performances (CEI 60770-1:2010)
La CEI 60770-1:2010 spécifie des méthodes uniformes d'essai pour l'évaluation des performances des transmetteurs à signaux de sortie électriques ou pneumatiques. Elle s'applique aux transmetteurs ayant pour signal de sortie normalisé soit un courant électrique analogique, soit un signal pneumatique analogique, conformément à la CEI 60381-1 ou à la CEI 60382. Les essais détaillés dans cette norme peuvent être applicables à des transmetteurs dotés d'autres signaux de sortie, à condition de tenir compte, de façon appropriée, de ces différences. Cette deuxième édition annule et remplace la première édition, parue en 1999, dont elle constitue une révision technique. La modification technique principale par rapport à l'édition précédente est la suivante: 4.3 Conditions de charge, pour les transmetteurs pneumatiques, des détails de charge ont été ajoutés. Cette publication doit être lue conjointement avec la CEI 61298-1:2008, la CEI 61298-2:2008, la CEI 61298-3:2008 et la CEI 61298-4:2008.
Oddajniki za uporabo v sistemih vodenja industrijskih procesov - 1. del: Metode vrednotenja lastnosti (IEC 60770-1:2010)
Ta del IEC 60770 velja za oddajnike, ki imajo ali standardni analogni električni tokovni izhodni signal ali standardni pnevmatični analogni izhodni signal v skladu z IEC 60381-1 ali IEC 60382. Preskusi, ki so tukaj podrobno opisani, se lahko uporabijo za oddajnike, ki imajo druge izhodne signale, pod pogojem, da se ustrezno upoštevajo te razlike. Za vrednotenje inteligentnih oddajnikov glej IEC 60770-3. Za nekatere vrste oddajnikov, kjer je senzor sestavni del, je morda treba upoštevati druge določene standarde IEC ISO (npr. za kemične analizatorje, merilnike pretoka itd). Ta standard je namenjen določevanju enotnih metod preskušanja za vrednotenje
delovanja oddajnikov s pnevmatičnimi ali električnimi izhodnimi signali. Metode vrednotenja, določene v tem standardu, so namenjene uporabi proizvajalca za določanje delovanja njihovih proizvodov in uporabnikov ali neodvisnih preskusnih organizacij za potrditev proizvajalčevih specifikacij delovanja. Okoliščine preskusov, določene v tem standardu, na primer razpon temperatur okolice in napajanje, predstavljajo tiste, ki se običajno pojavljajo pri uporabi. Posledično se morajo vrednosti, navedene tukaj, uporabiti, kadar proizvajalec ne poda drugih vrednosti.Preskusi, določeni v tem standardu, niso nujno zadostni za instrumente, posebej načrtovane za nenavadno naporne dolžnosti, povezane z varnostjo. Oziroma, omejene serije preskusov so
lahko primerne za instrumente, načrtovane za delovanje v bolj omejenem nizu pogojev. Kadar ni potrebno celotno ocenjevanje v skladu s tem standardom, se izvedejo ti preskusi, ki se zahtevajo, in rezultati izrazijo v skladu z ustreznimi deli tega standarda.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60770-1:2011
01-april-2011
1DGRPHãþD
SIST EN 60770-1:2001
Oddajniki za uporabo v sistemih vodenja industrijskih procesov - 1. del: Metode
vrednotenja lastnosti (IEC 60770-1:2010)
Transmitters for use in industrial-process control systems - Part 1: Methods for
performance evaluation (IEC 60770-1:2010)
Messumformer für industrielle Prozessleittechnik - Teil 1: Methoden für die Bewertung
des Betriebsverhaltens (IEC 60770-1:2010)
Transmetteurs utilisés dans les systèmes de conduite des processus industriels - Partie
1: Méthodes d’évaluation des performances (CEI 60770-1:2010)
Ta slovenski standard je istoveten z: EN 60770-1:2011
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
SIST EN 60770-1:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60770-1:2011
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SIST EN 60770-1:2011
EUROPEAN STANDARD
EN 60770-1
NORME EUROPÉENNE
February 2011
EUROPÄISCHE NORM
ICS 25.040.40 Supersedes EN 60770-1:1999
English version
Transmitters for use in industrial-process control systems -
Part 1: Methods for performance evaluation
(IEC 60770-1:2010)
Transmetteurs utilisés dans les systèmes Messumformer für industrielle
de conduite des processus industriels - Prozessleittechnik -
Partie 1: Méthodes d’évaluation des Teil 1: Methoden für die Bewertung des
performances Betriebsverhaltens
(CEI 60770-1:2010) (IEC 60770-1:2010)
This European Standard was approved by CENELEC on 2011-01-02. 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, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60770-1:2011 E
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SIST EN 60770-1:2011
EN 60770-1:2011 - 2 -
Foreword
The text of document 65B/656/CDV, future edition 2 of IEC 60770-1, prepared by SC 65B, Devices &
process analysis, of IEC TC 65, Industrial-process measurement, control and automation, was submitted
to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60770-1 on 2011-01-02.
This European Standard supersedes EN 60770-1:1999.
The significant technical change with respect to EN 60770-1:1999 is as follows:
– 4.3 Load conditions: For pneumatic transmitters, load details have been added.
This standard should be read in conjunction with EN 61298-1, EN 61298-2, EN 61298-3 and EN 61298-4.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2011-10-02
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2014-01-02
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60770-1:2010 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 indicated:
IEC 61187:1993 NOTE Harmonized as EN 61187:1994 (modified).
IEC 61326-1:2005 NOTE Harmonized as EN 61326-1:2006 (not modified).
__________
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SIST EN 60770-1:2011
- 3 - EN 60770-1:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
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 instruments -
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
IEC 60068-2-1 2007 Environmental testing - EN 60068-2-1 2007
Part 2-1: Tests - Test A: Cold
1) 2)
IEC 60068-2-2 1974 Environmental testing - EN 60068-2-2 1993
Part 2: Tests - Tests B: Dry heat
IEC 60068-2-31 2008 Environmental testing - EN 60068-2-31 2008
Part 2-31: Tests - Test Ec: Rough handling
shocks, primarily for equipment-type
specimens
IEC 60381-1 1982 Analogue signals for process HD 452.1 S1 1984
control systems -
Part 1: Direct current signals
IEC 60382 1991 Analogue pneumatic signal for process EN 60382 1993
control systems
IEC 60529 2001 Degrees of protection provided by - -
enclosures (IP Code)
IEC 60770-3 2006 Transmitters for use in industrial-process EN 60770-3 2006
control systems -
Part 3: Methods for performance evaluation of
intelligent transmitters
IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) - EN 61000-4-2 2009
Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity
test
1)
EN 60068-2-2 includes supplement(s) A to IEC 60068-2-2.
2)
EN 60068-2-2 is superseded by EN 60068-2-2:2007, which is based on IEC 60068-2-2:2007.
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SIST EN 60770-1:2011
EN 60770-1:2011 - 4 -
Publication Year Title EN/HD Year
IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) - EN 61000-4-3 2006
Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency,
electromagnetic field immunity test
IEC 61000-4-4 2004 Electromagnetic compatibility (EMC) - EN 61000-4-4 2004
Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst
immunity test
IEC 61000-4-5 2005 Electromagnetic compatibility (EMC) - EN 61000-4-5 2006
Part 4-5: Testing and measurement
techniques - Surge immunity test
IEC 61000-4-6 2008 Electromagnetic compatibility (EMC) - EN 61000-4-6 2009
Part 4-6: Testing and measurement
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
IEC 61000-4-8 2009 Electromagnetic compatibility (EMC) - EN 61000-4-8 2010
Part 4-8: Testing and measurement
techniques - Power frequency magnetic field
immunity test
IEC 61000-4-10 1993 Electromagnetic compatibility (EMC) - EN 61000-4-10 1993
Part 4-10: Testing and measurement
techniques - Damped oscillatory magnetic
field immunity test
IEC 61000-4-11 2004 Electromagnetic compatibility (EMC) - EN 61000-4-11 2004
Part 4-11: Testing and measurement
techniques - Voltage dips, short interruptions
and voltage variations immunity tests
IEC 61000-4-12 2006 Electromagnetic compatibility (EMC) - EN 61000-4-12 2006
Part 4-12: Testing and measurement
techniques - Ring wave immunity test
IEC 61000-4-16 1998 Electromagnetic compatibility (EMC) - EN 61000-4-16 1998
Part 4-16: Testing and measurement
techniques - Test for immunity to conducted,
common mode disturbances in the frequency
range 0 Hz to 150 kHz
IEC 61010-1 2001 Safety requirements for electrical EN 61010-1 2001
3)
equipment for measurement, control, and + corr. June 2002
laboratory use -
Part 1: General requirements
IEC 61032 1997 Protection of persons and equipment by EN 61032 1998
enclosures - Probes for verification
IEC 61298-1 2008 Process measurement and control devices - EN 61298-1 2008
General methods and procedures for
evaluating performance -
Part 1: General considerations
IEC 61298-2 2008 Process measurement and control devices - EN 61298-2 2008
General methods and procedures for
evaluating performance -
Part 2: Tests under reference conditions
3)
EN 61010-1 is superseded by EN 61010-1:2010, which is based on IEC 61010-1:2010.
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SIST EN 60770-1:2011
- 5 - EN 60770-1:2011
Publication Year Title EN/HD Year
IEC 61298-3 2008 Process measurement and control devices - EN 61298-3 2008
General methods and procedures for
evaluating performance -
Part 3: Tests for the effects of influence
quantitites
IEC 61298-4 2008 Process measurement and control devices - EN 61298-4 2008
General methods and procedures for
evaluating performance -
Part 4: Evaluation report content
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SIST EN 60770-1:2011
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SIST EN 60770-1:2011
IEC 60770-1
®
Edition 2.0 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Transmitters for use in industrial-process control systems –
Part 1: Methods for performance evaluation
Transmetteurs utilisés dans les systèmes de conduite des processus
industriels –
Partie 1: Méthodes d’évaluation des performances
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 25.040.40 ISBN 978-2-88912-082-6
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 60770-1:2011
– 2 – 60770-1 © IEC:2010
CONTENTS
FOREWORD.3
1 Scope and object .5
2 Normative references.5
3 Terms and definitions .7
4 General conditions for tests .7
4.1 Overview .7
4.2 Supply conditions.7
4.3 Load conditions .7
4.4 Input variable quality.7
5 Analysis and classification of transmitter performance.7
6 General testing procedures and precautions.8
7 Test procedures and reporting .8
8 Other considerations.13
8.1 General .13
8.2 Safety.13
8.3 Degree of protection provided by enclosure.13
8.4 Documentary information (see IEC 61187) .13
8.5 Installation.14
8.6 Routine maintenance and adjustment .14
8.7 Repair .14
8.8 Protective finishes .14
8.9 Design features .14
8.10 Variants.14
8.11 Tools and equipment .14
9 Test report and documentation.14
Annex A (informative) Analysis and classification of the instrument performance .15
Bibliography .19
Figure A.1 – Instrument model .15
Table 1 – Tests for all transmitters .8
Table 2 – Additional tests for electrically powered transmitters.10
Table 3 – Additional tests for pneumatic transmitters .13
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SIST EN 60770-1:2011
60770-1 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TRANSMITTERS FOR USE IN INDUSTRIAL-PROCESS
CONTROL SYSTEMS –
Part 1: Methods for performance evaluation
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 60770-1 has been prepared by subcommittee 65B: Devices &
process analysis, of IEC technical committee 65: Industrial-process measurement, control and
automation.
This second edition cancels and replaces the first edition published in 1999. This edition
constitutes a technical revision.
The significant technical change with respect to the previous edition is as follows:
• 4.3 Load conditions: For pneumatic transmitters, load details have been added.
This standard should be read in conjunction with IEC 61298-1, IEC 61298-2, IEC 61298-3 and
IEC 61298-4.
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SIST EN 60770-1:2011
– 4 – 60770-1 © IEC:2010
The text of this standard is based on the following documents:
CDV Report on voting
65B/656/CDV 65B/720/CDV
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 publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 60770 series, published under the general title Transmitters for use in
industrial-process control systems, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN 60770-1:2011
60770-1 © IEC:2010 – 5 –
TRANSMITTERS FOR USE IN INDUSTRIAL-PROCESS
CONTROL SYSTEMS –
Part 1: Methods for performance evaluation
1 Scope and object
This part of IEC 60770 is applicable to transmitters which have either a standard analogue
electric current output signal or a standard pneumatic output analogue signal in accordance
with IEC 60381-1 or IEC 60382. The tests detailed herein may be applied to transmitters which
have other output signals, provided that due allowance is made for such differences.
For the evaluation of the intelligent transmitters see IEC 60770-3.
For certain types of transmitters where the sensor is an integral part, other specific IEC or ISO
standards may need to be consulted (e.g. for chemical analysers, flowmeters, etc.)
This standard is intended to specify uniform methods of test for the evaluation of the
performance of transmitters with pneumatic or electric output signals.
The methods of evaluation specified in this standard are intended for use by manufacturers to
determine the performance of their products and by users or independent testing establish-
ments to verify manufacturers' performance specifications.
The test conditions defined in this standard, for example the range of ambient temperatures
and power supply, represent those which commonly arise in use. Consequently, the values
specified herein should be used where no other values are specified by the manufacturer.
The tests specified in this standard are not necessarily sufficient for instruments specifically
designed for unusually arduous or safety related duties. Conversely, a restricted series of test
may be suitable for instruments designed to perform within a more limited range of conditions.
When a full evaluation in accordance with this standard is not required, those tests which are
required shall be performed and the results reported in accordance with those parts of the
standard which are relevant.
2 Normative references
The following referenced documents are indispensable for the application of this document. For
dated references, only the edition cited applies. For undated references, the latest edition of
the referenced document (including any amendments) applies.
IEC 60050-300:2001, International Electrotechnical Vocabulary – Electrical and electronic
measurements and measuring instruments – 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
IEC 60068-2-1:2007, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2:1974, Environmental testing – Part 2-2: Tests – Test B: Dry heat
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SIST EN 60770-1:2011
– 6 – 60770-1 © IEC:2010
IEC 60068-2-31:2008, Environmental testing – Part 2-31: Tests – Test Ec: Rough handling
shocks, primarily for equipment-type specimens
IEC 60381-1:1982, Analogue signals for process control systems – Part 1: Direct current
signals
IEC 60382:1991, Analogue pneumatic signal for process control systems
IEC 60529:2001, Degrees of protection provided by enclosures (IP Code)
IEC 60770-3:2006, Transmitters for use in industrial-process control systems – Part 3: Methods
for performance evaluation of intelligent transmitters
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2008, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4:2004, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
IEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8: Testing and
measurement techniques – Power frequency magnetic field immunity test
IEC 61000-4-10:2001, Electromagnetic compatibility (EMC) – Part 4-10: Testing and
measurement techniques – Damped oscillatory magnetic field immunity test
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations immunity
tests
IEC 61000-4-12:2006, Electromagnetic compatibility (EMC) – Part 4-12: Testing and
measurement techniques – Ring wave immunity test
IEC 61000-4-16:2002, Electromagnetic compatibility (EMC) – Part 4-16: Testing and
measurement techniques – Test for immunity to conducted, common mode disturbances in the
frequency range 0 Hz to 150 kHz
IEC 61010-1:2001, Safety requirements for electrical equipment for measurement, control, and
laboratory use – Part 1: General requirements
IEC 61032:1997, Protection of persons and equipment by enclosures – Probes for verification
IEC 61298-1:2008, Process measurement and control devices – General methods and
procedures for evaluating performance – Part 1: General considerations
IEC 61298-2:2008, Process measurement and control devices – General methods and
procedures for evaluating performance – Part 2: Tests under reference conditions
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SIST EN 60770-1:2011
60770-1 © IEC:2010 – 7 –
IEC 61298-3:2008, Process measurement and control devices – General methods and
procedures for evaluating performance – Part 3: Tests for the effects of influence quantities
IEC 61298-4:2008, Process measurement and control devices – General methods and
procedures for evaluating performance – Part 4: Evaluation report content
3 Terms and definitions
For the purposes of this part of IEC 60770, definitions given in IEC 60050-300 and in
IEC 61298-1 are applicable.
4 General conditions for tests
4.1 Overview
For the purpose of this standard, the general test conditions (e.g. environmental test
conditions, supply conditions, load conditions, mounting position, externally induced vibrations,
external mechanical constraints, constancy of the operating conditions and settings, input
variable quality, delivery of the transmitter, etc.) specified in IEC 61298-1 apply, together with
the additional information below.
NOTE It is desirable that the closest communication should be maintained between the manufacturer and the
evaluating body. The manufacturer's specifications for the instrument should be taken into account when the test
programme is being decided, and the manufacturer should be invited to comment on both the test programmes and
the results.
4.2 Supply conditions
For the two-wire transmitters, the normal supply voltage might be 24 V d.c. For pneumatic
transmitters, the normal pressure supply might be 140 kPa (1,4 bar).
Tolerances on supply conditions, as given in IEC 61298-1, are not applicable to transmitters
with self-contained power supplies (e.g. battery-powered). The tolerance for battery-powered
equipment shall be agreed.
4.3 Load conditions
The value of the load to be used shall be agreed. A load of 250 Ω is a commonly used value
for electrical transmitters. For pneumatic transmitters, unless otherwise specified, a test load
3
consisting of an 8 m long rigid pipe with a 4 mm internal diameter, followed by a 20 cm
capacity (or more), shall be used. Care should be taken to ensure that pneumatic connections
are leak-tight.
4.4 Input variable quality
For transmitters that are to be evaluated with an integral sensor, the conditions and
requirements for maintaining the quantities to be measured (physical/chemical) shall be
properly stated (e.g. for flow transmitters, the fluid through the measuring device shall be that
specified by the manufacturer; the temperature of the fluid shall be maintained within ±2 °C of
the value specified in order to ensure the correct values of density and viscosity).
5 Analysis and classification of transmitter performance
In determining the test programme and test values to be used in the evaluation, the physical
and functional design of transmitter should be taken into account.
Guidance on this process can be found in Annex A.
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SIST EN 60770-1:2011
– 8 – 60770-1 © IEC:2010
6 General testing procedures and precautions
For the purpose of this standard, the general testing procedures and precautions (e.g.
identification and inspection, preparation for the tests, uncertainty of the measuring system,
traceability, tapping, setting of adjustments, preconditioning, sequence of tests, interruption
and duration of each series of measurements, anomalies and failures during tests, re-start of a
test, input/output variable relationships, error assessment, symbols and units of measurement,
etc.) specified in IEC 61298-1 shall be applied. The instrument shall be calibrated by the
manufacturer and tested without recalibration. Then additional measurements should be made
at the lowest and highest possible span and the remainder of the tests should be carried out at
the mean value.
7 Test procedures and reporting
The tests given in Tables 1, 2 and 3 are suitable for industrial process transmitters. If a full
evaluation is planned, each applicable test should be conducted. The results should be
reported as a percentage of the output span. Unexpected events, including faults and
malfunctions, shall be reported.
The test procedures and precautions are described in detail in IEC 61298-2 an
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