Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-3: Particular requirements - Test configuration, operational conditions and performance criteria for transducers with integrated or remote signal conditioning

IEC 61326-2-3:2020 is available as IEC 61326-2-3:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61326-2-3:2020 specifies more detailed test configurations, operational conditions and performance criteria for transducers with integrated or remote signal conditioning. This document applies only to transducers characterized by their ability to transform, with the aid of an auxiliary energy source, a non-electric quantity to a process-relevant electrical signal, and to output the signal at one or more PORTS. This document includes transducers for electrochemical and biological measured quantities. The transducers covered by this document can be powered by AC or DC voltage and/or by battery or with internal power supply.

Matériel électrique de mesure, de commande et de laboratoire - Exigences relatives à la CEM - Partie 2-3: Exigences particulières - Configurations d'essai, conditions de fonctionnement et critères de performance des transducteurs avec un système de conditionnement du signal intégré ou à distance

IEC 61326-2-3:2020 est disponible sous forme de IEC 61326-2-3:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L’IEC 61326-2-3:2020 spécifie de façon plus détaillée les configurations d’essai, les conditions de fonctionnement et les critères de performance des transducteurs avec un système de conditionnement du signal intégré ou à distance. Le présent document s’applique uniquement aux transducteurs caractérisés par leur capacité à transformer, avec l’aide d’une source d’énergie auxiliaire, une grandeur non électrique en un signal électrique approprié pour un processus, et à fournir un signal sur un ou plusieurs ACCES. Le présent document inclut les transducteurs pour le mesurage de grandeurs électrochimiques et biologiques. Les transducteurs couverts par ce document peuvent être alimentés par une tension alternative ou continue et/ou par batterie ou par une alimentation interne.

General Information

Status
Published
Publication Date
25-Oct-2020
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
26-Oct-2020
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IEC 61326-2-3:2020 - Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-3: Particular requirements - Test configuration, operational conditions and performance criteria for transducers with integrated or remote signal conditioning
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IEC 61326-2-3
Edition 3.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical equipment for measurement, control and laboratory use –
EMC requirements –
Part 2-3: Particular requirements – Test configuration, operational conditions
and performance criteria for transducers with integrated or remote signal
conditioning
Matériel électrique de mesure, de commande et de laboratoire –
Exigences relatives à la CEM –
Partie 2-3: Exigences particulières – Configurations d’essai, conditions de
fonctionnement et critères de performance des transducteurs avec un système
de conditionnement du signal intégré ou à distance
IEC 61326-2-3:2020-10(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61326-2-3
Edition 3.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical equipment for measurement, control and laboratory use –
EMC requirements –
Part 2-3: Particular requirements – Test configuration, operational conditions
and performance criteria for transducers with integrated or remote signal
conditioning
Matériel électrique de mesure, de commande et de laboratoire –
Exigences relatives à la CEM –
Partie 2-3: Exigences particulières – Configurations d’essai, conditions de
fonctionnement et critères de performance des transducteurs avec un système
de conditionnement du signal intégré ou à distance
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20; 25.040.40; 33.100.20 ISBN 978-2-8322-8980-8

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 61326-2-3:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 8

4 General ........................................................................................................................... 9

5 EMC test plan .................................................................................................................. 9

5.1 General ................................................................................................................... 9

5.2 Configuration of EUT during testing ........................................................................ 9

5.3 Operation conditions of EUT during testing ........................................................... 10

5.4 Specification of FUNCTIONAL PERFORMANCE ............................................................ 10

5.5 Test description .................................................................................................... 10

6 Immunity requirements .................................................................................................. 10

6.1 Conditions during the tests.................................................................................... 10

6.2 Immunity test requirements ................................................................................... 11

6.3 Random aspects ................................................................................................... 11

6.4 Performance criteria ............................................................................................. 11

7 Emission requirements .................................................................................................. 12

7.1 Conditions during measurements .......................................................................... 12

7.2 Emission limits ...................................................................................................... 12

8 Test results and test report ............................................................................................ 12

9 Instructions for use ........................................................................................................ 12

Annex A (normative) Immunity test requirements for PORTABLE TEST AND MEASUREMENT

EQUIPMENT powered by battery or from the circuit being measured ........................................ 13

Annex AA (normative) Additional requirements and exceptions for specific types of

transducers – Transducers for measurement of tension and compressive forces (force

transducers) ......................................................................................................................... 14

AA.1 General considerations ......................................................................................... 14

AA.2 Test configuration ................................................................................................. 14

AA.3 Operation conditions ............................................................................................. 15

Annex BB (normative) Additional requirements and exceptions for specific types of

transducers – Transducers for measurement of pressure (pressure transducers) .................. 17

BB.1 General considerations ......................................................................................... 17

BB.2 Test configuration ................................................................................................. 17

BB.3 Operation conditions ............................................................................................. 18

Annex CC (normative) Additional requirements and exceptions for specific types of

transducers – Transducers for measurement of temperature (temperature transducer) ......... 19

CC.1 General considerations ......................................................................................... 19

CC.2 Test configuration ................................................................................................. 19

CC.3 Operation conditions ............................................................................................. 20

Bibliography .......................................................................................................................... 22

Figure 101 – Example of a TRANSDUCER WITH INTEGRATED SIGNAL CONDITIONING ....................... 7

Figure 102 – Example of a TRANSDUCER WITH REMOTE SIGNAL CONDITIONING ............................. 8

Figure AA.1 – Example of the configuration of a force transducer with remote signal

conditioning .......................................................................................................................... 15

---------------------- Page: 4 ----------------------
IEC 61326-2-3:2020 © IEC 2020 – 3 –

Figure BB.1 – Example of the configuration of a pressure transducer ................................... 18

Figure CC.1 – Example of the configuration of a temperature transducer with sensor

and signal conditioning in the same housing ......................................................................... 20

Figure CC.2 – Example of the configuration of a temperature transducer with remote

signal conditioning ................................................................................................................ 20

Table 101 – Performance criteria for the different functions .................................................. 12

Table AA.1 – Circuitry actions for generating an output signal for simulation of a

mechanical load on the transducer ........................................................................................ 16

---------------------- Page: 5 ----------------------
– 4 – IEC 61326-2-3:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL EQUIPMENT FOR MEASUREMENT,
CONTROL AND LABORATORY USE –
EMC REQUIREMENTS –
Part 2-3: Particular requirements –
Test configuration, operational conditions and performance
criteria for transducers with integrated or remote signal conditioning
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

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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

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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 International Standard IEC 61326-2-3 has been prepared by subcommittee 65A: System

aspects, of IEC technical committee 65: Industrial-process measurement, control and

automation.

This third edition cancels and replaces the second edition published in 2012. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
– update of the document with respect to IEC 61326-1:2020.
---------------------- Page: 6 ----------------------
IEC 61326-2-3:2020 © IEC 2020 – 5 –
The text of this International Standard is based on the following documents:
FDIS Report on voting
65A/980/FDIS 65A/991/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.

In this document the following print types are used:

– Terms used throughout this document which have been defined in Clause 3 of this document

and of IEC 61326-1:2020: SMALL CAPITALS.

This part of the IEC 61326 series is to be used in conjunction with IEC 61326-1:2020 and follows

the same numbering of clauses, subclauses, tables and figures.

When a particular subclause of IEC 61326-1 is not mentioned in this part, that subclause applies

as far as is reasonable. When this standard states “addition”, “modification” or “replacement”,

the relevant text in IEC 61326-1 is to be adapted accordingly.
NOTE The following numbering system is used:

– subclauses, tables and figures that are numbered starting from 101 are additional to those in

IEC 61326-1;

– unless notes are in a new subclause or involve notes in IEC 61326-1, they are numbered starting from 101

including those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.

A list of all parts of the IEC 61326 series, under the general title Electrical equipment for

measurement, control and laboratory use – EMC requirements, 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.
---------------------- Page: 7 ----------------------
– 6 – IEC 61326-2-3:2020 © IEC 2020
ELECTRICAL EQUIPMENT FOR MEASUREMENT,
CONTROL AND LABORATORY USE –
EMC REQUIREMENTS –
Part 2-3: Particular requirements –
Test configuration, operational conditions and performance
criteria for transducers with integrated or remote signal conditioning
1 Scope

In addition to the requirements of IEC 61326-1, this part of IEC 61326 specifies more detailed

test configurations, operational conditions and performance criteria for transducers with

integrated or remote signal conditioning.

This document applies only to transducers characterized by their ability to transform, with the

aid of an auxiliary energy source, a non-electric quantity to a process-relevant electrical signal,

and to output the signal at one or more PORTS. This document includes transducers for electro-

chemical and biological measured quantities.

The transducers covered by this document can be powered by AC or DC voltage and/or by

battery or with internal power supply.

Transducers referred to by this document comprise at least the following items (see Figure 101

and Figure 102):

– one or more elements for transforming a non-electrical input quantity to an electrical

quantity;

– a TRANSMISSION LINK for transferral of the electrical quantity to a component for signal

conditioning;

– a unit for signal conditioning that converts the electrical quantity to a process-relevant

electrical signal;
– an enclosure for enclosing the above-stated components fully or in parts.

Transducers referred to by this document can also have the following items (see Figure 101

and Figure 102):
– a communication and control unit;
– a display unit;
– control elements such as keys, buttons, switches, etc.;

– transducer output signals (for example, switch outputs, alarm outputs) which are clearly

assigned to the input signal(s);
– transducers with signal conditioning which may be integrated or remote.

The manufacturer specifies the environment for which the product is intended to be used and

utilizes the corresponding test levels of IEC 61326-1.

Additional requirements and exceptions for specific types of transducers are given in Annex AA,

Annex BB and Annex CC to this document.
---------------------- Page: 8 ----------------------
IEC 61326-2-3:2020 © IEC 2020 – 7 –
Key
1 non-electrical quantity
2 electrical quantity
3 TRANSMISSION LINK
4 signal conditioning
5 communication and control unit
6 input/output PORTS
7 power supply
8 signal PORT
9 AC/DC POWER PORT
10 enclosure
Figure 101 – Example of a TRANSDUCER WITH INTEGRATED SIGNAL CONDITIONING
---------------------- Page: 9 ----------------------
– 8 – IEC 61326-2-3:2020 © IEC 2020
Key
1 non-electrical quantity
2 electrical quantity
3 TRANSMISSION LINK
4 signal conditioning
5 communication and control unit
6 input/output PORTS
7 power supply
8 signal PORT
9 AC/DC POWER PORT
10 enclosure
Figure 102 – Example of a TRANSDUCER WITH REMOTE SIGNAL CONDITIONING
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 the edition cited applies.

For undated references, the latest edition of the referenced document (including any

amendments) applies.
Clause 2 of IEC 61326-1:2020 applies, except as follows:
Addition:

IEC 61326-1:2020, Electrical equipment for measurement, control and laboratory use – EMC

requirements – Part 1: General requirements
3 Terms and definitions

For the purposes of this document, the terms and definitions of IEC 61326-1:2020 apply, except

as follows.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
---------------------- Page: 10 ----------------------
IEC 61326-2-3:2020 © IEC 2020 – 9 –
Addition:
3.101
transducer with integrated signal conditioning

transducer in which all components for signal conditioning are integrated in the enclosure

Note 1 to entry: See Figure 101.
3.102
transducer with remote signal conditioning

transducer whose components for signal conditioning are installed in separate enclosures

Note 1 to entry: See Figure 102.
3.104
transmission link
connection between the individual components of a TRANSDUCER WITH REMOTE SIGNAL
CONDITIONING
3.105
range

range of indications obtainable with a particular setting of the controls of a measuring instrument

Note 1 to entry: The (nominal) RANGE is normally stated in terms of its lower and upper limits. Where the lower limit

is zero, the (nominal) RANGE is commonly stated solely in terms of its upper limit.

[SOURCE: IEC 60050-300:2001, 311-03-14]
3.106
measuring range (of a transducer)

range defined by two values of the measured quantity within which the relationship between the

output and input signals complies with the accuracy requirements

Note 1 to entry: For a 4 mA to 20 mA system, the output current 4 mA represents the lower limit for the measured

quantity and 20 mA represent the upper limit.

[SOURCE: IEC 60050-300:2001, 314-04-04, modified – "output signal" has been changed to

"measured quantity" and the note to entry has been added]
3.107
span

algebraic difference between the values of the upper and lower limits of the MEASURING RANGE

[SOURCE: IEC 60050-300:2001, 311-03-13]
4 General
Clause 4 of IEC 61326-1:2020 applies.
5 EMC test plan
5.1 General
Subclause 5.1 of IEC 61326-1:2020 applies.
5.2 Configuration of EUT during testing
Subclause 5.2 of IEC 61326-1:2020 applies, except as follows.
---------------------- Page: 11 ----------------------
– 10 – IEC 61326-2-3:2020 © IEC 2020
5.2.1 General
Subclause 5.2.1 of IEC 61326-1:2020 applies, except as follows:
Addition:

A system for monitoring the behaviour of the EUT and for registering the output values shall be

designed in such a way that the electromagnetic compatibility characteristics of the EUT are

not impaired. The monitoring system shall also be designed such that its response is not

affected by the immunity tests. The input impedance of the monitoring system shall correspond

to the terminating impedance of the transducer, specified by the manufacturer. The distance

between the monitoring system and the EUT should be at least 1,5 m.

The measurement uncertainty and the bandwidth of the monitoring system shall be adapted to

the characteristics of the transducer.
TRANSMISSION LINKS are considered as separate input and output lines.

The tests shall be conducted in compliance with the environmental conditions for the transducer

specified by the manufacturer and using the specified supply voltage.

In the case of battery-operated transducers that can also be used when connected with a power

supply, both operating modes (stand-alone and externally supplied) shall be tested.

In cases in which the manufacturer's installation instructions stipulate the use of external

protective equipment or particular protective measures that are explicitly stated in the operating

manual, the test requirements given in this part of the document shall be applied for use

together with the external protective equipment or measures.
5.3 Operation conditions of EUT during testing
Subclause 5.3 of IEC 61326-1:2020 applies.
5.4 Specification of FUNCTIONAL PERFORMANCE
Subclause 5.4 of IEC 61326-1:2020 applies.
5.5 Test description
Subclause 5.5 of IEC 61326-1:2020 applies.
6 Immunity requirements
6.1 Conditions during the tests
Subclause 6.1 of IEC 61326-1:2020 applies except as follows:
Addition:

Transducers shall be operated during the test with all lines connected, provided the PORTS do

not have functions that disable the transducer's normal operation.
Configurations with alternative PORTS shall be tested separately.

Transducers shall be set to the most sensitive ranges or combination of ranges unless other

ranges are known to provide worst-case immunity results within normal application.

---------------------- Page: 12 ----------------------
IEC 61326-2-3:2020 © IEC 2020 – 11 –

Only operational functions compliant with the specified use under the nominal conditions are

permitted. Defined functions that cannot be set under electromagnetic compatibility test

conditions shall be simulated by appropriate measures. This shall be done in such a way that

the electromagnetic compatibility behaviour of the transducer is not affected.

Measurement and supply circuits shall be grounded in accordance with the manufacturer's

specifications. If no such specifications are given, the tests shall be carried out with the circuits

grounded and with the circuits ungrounded.
6.2 Immunity test requirements
Subclause 6.2 of IEC 61326-1:2020 applies except as follows:
Addition:
After or during each test, the function of the transducer shall be tested.

Power inputs for voltages up to 75 V DC or voltages up to 50 V AC that are fed in a single cable

together with the input and output PORTS are tested as input and output PORTS.

Power inputs for voltages up to 75 V DC or voltages up to 50 V AC with superimposed output

signals (for example, 4 mA to 20 mA current loop with two-wire technology) are also tested as

input/output PORTS.

The TRANSMISSION LINK of a TRANSDUCER WITH REMOTE SIGNAL CONDITIONING is tested as an

input/output PORT.

If insulation resistance is specified, it shall be verified after ESD, fast transient and surge

immunity tests.

If the insulation's specifications are not satisfied, the transducer is deemed to have failed the

EMC tests.
6.3 Random aspects
Subclause 6.3 of IEC 61326-1:2020 applies.
6.4 Performance criteria
Subclause 6.4 of IEC 61326-1:2020 applies except as follows:
Addition:

The performance criteria are used to assess the defined functions of a transducer under the

effects of external electromagnetic disturbances. Since a transducer is often part of a chain of

functions in a large process, effects on the overall process due to malfunctions of a transducer

caused by external interference factors cannot be predicted without great difficulty. For this

reason, it is particularly important that the behaviour of transducers under the influence of

electromagnetic disturbances is described with performance criteria.

Table 101 describes the permissible effects of a disturbance on the different functions of a

transducer with regard to the required performance criteria.
---------------------- Page: 13 ----------------------
– 12 – IEC 61326-2-3:2020 © IEC 2020
Table 101 – Performance criteria for the diffe
...

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