Reference conditions and procedures for testing industrial and process measurement transmitters - Part 4: Specific procedures for level transmitters (IEC 62828-4:2020)

This part of IEC 62828 establishes specific procedures for testing level transmitters used in
measuring and control systems for industrial process and machinery control systems. For
general test procedures, reference is to be made to IEC 62828-1:2017, applicable to all types
of transmitters.
Throughout this document, the term "industrial transmitters" covers all types of transmitters
used in measuring and control systems for industrial processes and for machinery.
The requirements of this document are applicable to all level measurement principles.
Detailed description of transmitters is given for two main principles for improved clarity.

Referenzbedingungen und Testmethoden für Industrie- und Prozessmessgrößenumformer - Teil 4: Spezielle Testmethoden für Füllstandmessumformer (IEC 62828-4:2020)

Conditions de référence et procédures pour l'essai des transmetteurs de mesure industriels et de processus - Partie 4: Procédures spécifiques pour les transmetteurs de niveau (IEC 62828-4:2020)

L'IEC 62828-4:2020 établit les procédures spécifiques d'essai des transmetteurs de niveau utilisés dans les systèmes de mesure et de commande des processus industriels et des systèmes de commande des machines. Pour les procédures d'essais générales, référence doit être faite à l'IEC 62828-1:2017, applicable à tous les types de transmetteurs. Tout au long du présent document, le terme "transmetteurs industriels" couvre tous les types de transmetteurs utilisés dans les systèmes de mesure et de commande des processus industriels et des machines. Les exigences du présent document s'appliquent à tous les principes de mesure du niveau. Par souci de clarté, une description détaillée des transmetteurs est donnée pour deux principes principaux.

Referenčni pogoji in postopki za preskušanje industrijskih in procesnih merilnih oddajnikov - 4. del: Posebni postopki za oddajnike nivoja (IEC 62828-4:2020)

General Information

Status
Published
Public Enquiry End Date
11-Jul-2019
Publication Date
09-Nov-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Oct-2020
Due Date
12-Dec-2020
Completion Date
10-Nov-2020

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SLOVENSKI STANDARD
SIST EN IEC 62828-4:2020
01-december-2020
Referenčni pogoji in postopki za preskušanje industrijskih in procesnih merilnih
oddajnikov - 4. del: Posebni postopki za oddajnike nivoja (IEC 62828-4:2020)

Reference conditions and procedures for testing industrial and process measurement

transmitters - Part 4: Specific procedures for level transmitters (IEC 62828-4:2020)

Referenzbedingungen und Testmethoden für Industrie- und
Prozessmessgrößenumformer - Teil 4: Spezielle Testmethoden für
Füllstandmessumformer (IEC 62828-4:2020)
Conditions de référence et procédures pour l'essai des transmetteurs de mesure

industriels et de processus - Partie 4: Procédures spécifiques pour les transmetteurs de

niveau (IEC 62828-4:2020)
Ta slovenski standard je istoveten z: EN IEC 62828-4:2020
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
SIST EN IEC 62828-4:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62828-4:2020
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SIST EN IEC 62828-4:2020
EUROPEAN STANDARD EN IEC 62828-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2020
ICS 17.200.20; 25.040.40
English Version
Reference conditions and procedures for testing industrial and
process measurement transmitters - Part 4: Specific procedures
for level transmitters
(IEC 62828-4:2020)

Conditions de référence et procédures pour l'essai des Referenzbedingungen und Testmethoden für Industrie- und

transmetteurs de mesure industriels et de processus - Prozessmessgrößenumformer - Teil 4: Spezielle

Partie 4: Procédures spécifiques pour les transmetteurs de Testmethoden für Füllstandmessumformer

niveau (IEC 62828-4:2020)
(IEC 62828-4:2020)

This European Standard was approved by CENELEC on 2020-09-22. 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 CEN-CENELEC

Management Centre 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 CEN-CENELEC Management Centre 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62828-4:2020 E
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SIST EN IEC 62828-4:2020
EN IEC 62828-4:2020 (E)
European foreword

The text of document 65B/1178(F)/FDIS, future edition 1 of IEC 62828-4, prepared by SC 65B

“Measurement and control devices” of IEC/TC 65 “Industrial-process measurement, control and

automation” was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as

EN IEC 62828-4:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-06-22

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-09-22

document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 62828-4:2020 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 60529:1989 NOTE Harmonized as EN 60529:1991 (not modified)
IEC 60947-5-6:1999 NOTE Harmonized as EN 60947-5-6:2000 (not modified)
IEC 61140:2016 NOTE Harmonized as EN 61140:2016 (not modified)
IEC 61298-1:2008 NOTE Harmonized as EN 61298-1:2008 (not modified)
IEC 61298-2:2008 NOTE Harmonized as EN 61298-2:2008 (not modified)
IEC 61298-3:2008 NOTE Harmonized as EN 61298-3:2008 (not modified)
IEC 61987-1:2006 NOTE Harmonized as EN 61987-1:2007 (not modified)
IEC 61987-11:2016 NOTE Harmonized as EN 61987-11:2017 (not modified)
IEC 61987-15 NOTE Harmonized as EN 61987-15
IEC 62683-1:2017 NOTE Harmonized as EN 62683-1:2017 (not modified)
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SIST EN IEC 62828-4:2020
EN IEC 62828-4:2020 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the

relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-2-6 2007 Environmental testing - Part 2–6: Tests -EN 60068-2-6 2008
Test Fc: Vibration (sinusoidal)

IEC 60068-2-27 2008 Environmental testing - Part 2–27: Tests -EN 60068-2-27 2009

Test Ea and guidance: Shock

IEC 60068-2-64 2008 Environmental testing - Part 2–64: Tests -EN 60068-2-64 2008

Test Fh: Vibration, broadband random
and guidance
IEC 61326-2-3 2012 Electrical equipment for measurement,EN 61326-2-3 2013
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 62828-1 2017 Reference conditions and procedures forEN IEC 62828-1 2018
testing industrial and process
measurement transmitters - Part 1:
General procedures for all types of
transmitters
IEC 62828-2 2017 Reference conditions and procedures forEN IEC 62828-2 2018
testing industrial and process
measurement transmitters - Part 2:
Specific procedures for pressure
transmitters
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SIST EN IEC 62828-4:2020
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SIST EN IEC 62828-4:2020
IEC 62828-4
Edition 1.0 2020-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Reference conditions and procedures for testing industrial and process
measurement transmitters –
Part 4: Specific procedures for level transmitters
Conditions de reference et procedures pour l'essai des transmetteurs
de mesure industriels et de processus –
Partie 4: Procédures spécifiques pour les transmetteurs de niveau
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.200.20; 25.040.40 ISBN 978-2-8322-8757-6

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
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SIST EN IEC 62828-4:2020
– 2 – IEC 62828-4:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

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

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

3.1 Basic definitions ...................................................................................................... 9

3.2 Level transmitter definitions .................................................................................. 11

3.2.2 Pressure-based level transmitter definitions ................................................... 11

3.2.4 Float level transmitter definitions ................................................................... 12

3.2.6 Microwave/Radar level transmitter definitions ................................................ 12

3.2.7 Optical based level transmitter definitions ...................................................... 12

3.2.9 Capacitance and admittance level transmitter definitions ............................... 13

3.2.10 Mechanical level transmitter definitions ......................................................... 13

3.2.11 Electrical resistance level transmitter definitions ............................................ 14

3.3 Measurement parameters ..................................................................................... 14

3.4 Influence quantity definitions ................................................................................. 14

3.5 Reference to the IEC common data dictionary (CDD) ............................................ 15

4 General description of main types of level transmitters .................................................. 16

4.1 General ................................................................................................................. 16

4.2 Pressure-based level transmitters ......................................................................... 16

4.3 Microwave/radar level transmitter ......................................................................... 18

4.3.1 General ......................................................................................................... 18

4.3.2 Free-space radar level transmitter ................................................................. 18

4.3.3 Guided-wave radar level transmitter .............................................................. 19

5 Reference test conditions .............................................................................................. 20

5.1 General ................................................................................................................. 20

5.2 Standard reference test conditions ........................................................................ 20

5.2.1 General ......................................................................................................... 20

5.2.2 Environmental test conditions ........................................................................ 20

5.2.3 Power supply conditions ................................................................................ 21

5.2.4 Load conditions ............................................................................................. 21

5.2.5 Mounting positions for testing ........................................................................ 21

5.3 Reference test conditions for ambient and process quantities influencing

operation .............................................................................................................. 21

5.3.1 General ......................................................................................................... 21

5.3.2 Process conditions ........................................................................................ 22

5.3.3 Environmental atmospheric conditions ........................................................... 22

5.3.4 Mechanical vibration ...................................................................................... 23

5.3.5 Shock, drop and topple .................................................................................. 23

5.3.6 Power supply ................................................................................................. 23

5.3.7 Electromagnetic compatibility (EMC) ............................................................. 23

5.4 Reference design criteria ...................................................................................... 23

5.4.1 General ......................................................................................................... 23

5.4.2 Enclosure protection against solid, liquid (IP) and impact (IK) ........................ 23

5.4.3 Enclosure protection against corrosive and erosive influences ....................... 23

5.4.4 Electrical safety (insulation resistance, dielectric strength) ............................ 24

5.4.5 Hazardous environment (for application in explosive atmosphere) ................. 24

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SIST EN IEC 62828-4:2020
IEC 62828-4:2020 © IEC 2020 – 3 –

5.4.6 Functional safety ........................................................................................... 24

6 Test procedures ............................................................................................................ 24

6.1 General ................................................................................................................. 24

6.1.1 Overview ....................................................................................................... 24

6.1.2 Specific test setups and procedures .............................................................. 25

6.2 Type tests at standard reference conditions .......................................................... 28

6.2.1 General ......................................................................................................... 28

6.2.2 Accuracy and related factors ......................................................................... 29

6.2.3 Static behaviour ............................................................................................. 30

6.2.4 Dynamic behaviour ........................................................................................ 31

6.3 Type tests at operating reference test conditions .................................................. 31

6.3.1 General ......................................................................................................... 31

6.3.2 Ambient temperature effects .......................................................................... 31

6.3.3 Ambient relative humidity effects ................................................................... 32

6.3.4 Vibration effects ............................................................................................ 32

6.3.5 Shock, drop and topple .................................................................................. 32

6.3.6 Accelerated operational life test ..................................................................... 32

6.3.7 EMC tests ...................................................................................................... 32

6.3.8 Further test procedures ................................................................................. 32

6.3.9 Additional test for digital transmitters ............................................................. 32

6.4 Routine tests......................................................................................................... 32

6.5 Acceptance, integration, periodic and maintenance tests ...................................... 32

6.5.1 General ......................................................................................................... 32

6.5.2 Periodical verification .................................................................................... 32

6.5.3 Periodical calibration ..................................................................................... 32

7 Test report and technical documentation ....................................................................... 32

7.1 Test report ............................................................................................................ 32

7.2 Technical documentation ...................................................................................... 33

7.3 Total probable error TPE ....................................................................................... 33

7.3.1 General ......................................................................................................... 33

7.3.2 Specific errors ............................................................................................... 33

Annex A (informative) Main characteristics for level transmitters .......................................... 34

A.1 Properties of level transmitter classes ................................................................... 34

A.1.1 General ......................................................................................................... 34

A.1.2 Pressure-based level transmitter ................................................................... 34

A.1.3 Microwave/Radar level transmitter ................................................................. 36

A.2 Product properties ................................................................................................ 42

A.2.1 Library of properties used in the device classes ............................................. 42

A.2.2 Value lists of properties ................................................................................. 46

Annex B (informative) Example for the calculation of the TPE based on 7.3 and the

MRU and MRE ...................................................................................................................... 48

B.1 Overview of the parameters used for the error calculation ..................................... 48

B.2 Example test report pressure-based level transmitter ............................................ 48

B.2.1 General ......................................................................................................... 48

B.2.2 Test protocol ................................................................................................. 48

B.2.3 DUT characteristics ....................................................................................... 48

B.2.4 TPE calculation ............................................................................................. 49

B.2.5 MRU calculation ............................................................................................ 50

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SIST EN IEC 62828-4:2020
– 4 – IEC 62828-4:2020 © IEC 2020

B.3 Sub test processes ............................................................................................... 51

B.3.1 Inaccuracy test .............................................................................................. 51

B.3.2 Ambient temperature effect test ..................................................................... 52

B.3.3 Process temperature effect test ..................................................................... 53

B.3.4 Long-term stability test .................................................................................. 54

Bibliography .......................................................................................................................... 56

Figure 1 – Principle diagram of time values and their meanings ............................................ 10

Figure 2 – Principles of pressure-based level transmitters .................................................... 18

Figure 3 – Free-space radar level transmitter ........................................................................ 19

Figure 4 – Guided-wave radar level transmitter ..................................................................... 20

Figure 5 – Schematic example of a test set-up for pressure PMT .......................................... 25

Figure 6 – Typical test set-up for radar level transmitter ........................................................ 26

Figure 7 –Test setup simulated targets and simulated environment....................................... 27

Figure 8 – Example of test setup for wet test ........................................................................ 28

Table 1 – Environmental test conditions ................................................................................ 21

Table 2 – Influence quantities for the various level measurement principles .......................... 22

Table 3 – Number of measurement cycles and number and position of test points ................ 24

Table 4 – Example of statement of maximum error................................................................ 29

Table A.1 – Pressure-based level transmitter ........................................................................ 34

Table A.2 – Free-space radar level transmitter ...................................................................... 37

Table A.3 – Guided-wave radar level transmitter ................................................................... 39

Table A.4 – Library of properties used in the device classes ................................................. 42

Table A.5 – Value lists of properties ..................................................................................... 47

Table B.1 – Abbreviated terms .............................................................................................. 48

Table B.2 – DUT characteristics ............................................................................................ 49

Table B.3 – TPE calculation .................................................................................................. 49

Table B.4 – MRU calculation ................................................................................................. 50

Table B.5 – Reference test devices ....................................................................................... 51

Table B.6 – Reference test conditions ................................................................................... 51

Table B.7 – Test results ........................................................................................................ 52

Table B.8 – Reference test equipment .................................................................................. 52

Table B.9 – Reference test conditions ................................................................................... 53

Table B.10 – Test results ...................................................................................................... 53

Table B.11 – Reference test equipment ................................................................................ 53

Table B.12 – Reference test conditions ................................................................................. 54

Table B.13 – Test results ...................................................................................................... 54

Table B.14 – Reference test equipment ................................................................................ 55

Table B.15 – Reference test conditions ................................................................................. 55

Table B.16 – Test results ...................................................................................................... 55

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SIST EN IEC 62828-4:2020
IEC 62828-4:2020 © IEC 2020 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
REFERENCE CONDITIONS AND PROCEDURES FOR TESTING
INDUSTRIAL AND PROCESS MEASUREMENT TRANSMITTERS –
Part 4: Specific procedures for level transmitters
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 62828-4 has been prepared by subcommittee 65B: Measurement

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

and automation.

The IEC 62828 series cancels and replaces the IEC 60770 series and proposes revisions for

the IEC 61298 series.
The text of this International Standard is based on the following documents:
FDIS Report on voting
65B/1178/FDIS 65B/1182/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.

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SIST EN IEC 62828-4:2020
– 6 – IEC 62828-4:2020 © IEC 2020
This International Standard is to be used in conjunction with IEC 62828-1:2017.

A list of all parts in the IEC 62828 series, published under the general title Reference conditions

and procedures for testing industrial and process measurement transmitters, 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 document using a colour printer.

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SIST EN IEC 62828-4:2020
IEC 62828-4:2020 © IEC 2020 – 7 –
INTRODUCTION
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