Fibre optic sensors - Part 1: Generic specification (IEC 61757:2018)

This document is a generic specification covering optical fibres, components and subassemblies
as they pertain specifically to fibre optic sensing applications. It has been
designed to be used as a common working and discussion tool by the vendors of components
and subassemblies intended to be integrated in fibre optic sensors, as well as by designers,
manufacturers and users of fibre optic sensors independent of any application or installation.
The objective of this document is to define, classify and provide the framework for specifying
fibre optic sensors, and their specific components and subassemblies. The requirements of
this document apply to all related fibre optic sensor standards which belong to IEC 61757 (all
parts). Standards of IEC 61757 (all parts) contain requirements specific to sensors for
particular quantities subject to measurement, and for a particular style or variant of such a
fibre optic sensor.

LWL-Sensoren - Teil 1: Fachgrundspezifikation (IEC 61757:2018)

Capteurs a fibres optiques - Partie 1: Spécification générique (IEC 61757:2018)

IEC 61757:2018 est une spécification générique qui traite des fibres optiques, des composants et des sous-ensembles intervenant de manière spécifique dans des applications de capteurs à fibres optiques. Il a été conçu pour être utilisé comme un outil de travail et un support de discussion par les vendeurs de composants et de sous-ensembles destinés à être intégrés à des capteurs à fibres optiques, ainsi que par les concepteurs, les fabricants et les utilisateurs de capteurs à fibres optiques indépendants de toute application ou installation. Le présent document a pour objectif de définir, de classer et de fournir un cadre de travail pour la spécification des capteurs à fibres optiques, de leurs composants et de leurs sous-ensembles spécifiques. Les exigences du présent document s'appliquent à toutes les normes sur les capteurs à fibres optiques associées qui appartiennent à l'IEC 61757 (toutes les parties). Les normes de l'IEC 61757 (toutes les parties) contiennent des exigences spécifiques aux capteurs pour des grandeurs particulières à mesurer et pour un modèle particulier ou une variante d'un tel capteur à fibres optiques.
Mots clés: capteurs à fibres optiques

Optična zaznavala - 1. del: Splošna specifikacija (IEC 61757:2018)

Ta dokument je splošna specifikacija, ki zajema optična vlakna, sestavne dele in sklope, ki se nanašajo zlasti na zaznavo v zvezi z optičnimi vlakni. Pripravljen je bil kot skupno orodje za delo in razpravo, ki bi ga uporabljali prodajalci sestavnih delov in sklopov, ki so namenjeni za vključitev v optične senzorje, ter projektanti, proizvajalci in uporabniki optičnih senzorjev ne glede na uporabo ali namestitev.
Namen tega dokumenta je opredeliti, razvrstiti in zagotoviti okvir za specifikacijo optičnih zaznaval ter njihovih posebnih sestavnih delov in sklopov. Zahteve tega dokumenta se uporabljajo za vse povezane standarde za optična zaznavala, ki spadajo v skupino standardov UEC 61757 (vsi deli). Standardi IEC 61757 (vsi deli) vsebujejo zahteve za določena zaznavala za posamezne količine, ki so predmet meritve, ter za določen slog ali različico takega optičnega zaznavala.

General Information

Status
Published
Publication Date
05-Nov-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
24-Oct-2018
Due Date
29-Dec-2018
Completion Date
06-Nov-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LWL-Sensoren - Teil 1: Fachgrundspezifikation (IEC 61757:2018)Capteurs a fibres optiques - Partie 1: Spécification générique (IEC 61757:2018)Fibre optic sensors - Part 1: Generic specification (IEC 61757:2018)33.180.99YODNQDOther fibre optic equipmentICS:Ta slovenski standard je istoveten z:EN IEC 61757:2018SIST EN IEC 61757-1:2018en01-december-2018SIST EN IEC 61757-1:2018SLOVENSKI
STANDARDSIST EN 61757-1:20121DGRPHãþD



SIST EN IEC 61757-1:2018



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN IEC 61757
October 2018 ICS 33.180.99
Supersedes
EN 61757-1:2012
English Version
Fibre optic sensors - Generic specification (IEC 61757:2018)
Capteurs à fibres optiques - Spécification générique (IEC 61757:2018)
LWL-Sensoren - Fachgrundspezifikation (IEC 61757:2018) This European Standard was approved by CENELEC on 2018-03-01. 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 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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 © 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61757:2018 E SIST EN IEC 61757-1:2018



EN IEC 61757:2018 (E) 2 European foreword The text of document 86C/1461/CDV, future edition 1 of IEC 61757, prepared by SC 86C "Fibre optic systems and active devices" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61757:2018. The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2019-04-19 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2021-10-19
This document supersedes EN 61757-1:2012. This document constitutes a technical revision including the following technical changes with respect to EN 61757-1:2012:
a. change of the document number due to a new structure of the fibre optic sensor standard series; b. update of the normative references and bibliography; c. revision of Annex A. 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 61757:2018 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 60654-4 NOTE Harmonized as EN 60654-4. IEC 60721-1 NOTE Harmonized as EN 60721-1. SIST EN IEC 61757-1:2018



EN IEC 61757:2018 (E) 3 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 60050 series
International Electrotechnical Vocabulary
- series
IEC 60060-1 -
High-voltage test techniques -- Part 1: General definitions and test requirements EN 60060-1 -
IEC 60068-1 -
Environmental testing -- Part 1: General and guidance EN 60068-1 -
IEC 60068-2-1 -
Environmental testing - Part 2-1: Tests - Test A: Cold EN 60068-2-1 -
IEC 60068-2-2 -
Environmental testing - Part 2-2: Tests - Test B: Dry heat EN 60068-2-2 -
IEC 60068-2-5 -
Environmental testing – Part 2-5: Tests – Test Sa: Simulated solar radiation at ground level and guidance for solar radiation testing EN IEC 60068-2-5 -
IEC 60068-2-6 -
Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal) EN 60068-2-6 -
IEC 60068-2-10 -
Environmental testing - Part 2-10: Tests - Test J and guidance: Mould growth EN 60068-2-10 -
IEC 60068-2-11 -
Basic environmental testing procedures - Part 2-11: Tests - Test Ka: Salt mist EN 60068-2-11 -
IEC 60068-2-13 -
Basic environmental testing procedures - Part 2-13: Tests - Test M: Low air pressure EN 60068-2-13 -
IEC 60068-2-14 -
Environmental testing - Part 2-14: Tests - Test N: Change of temperature EN 60068-2-14 -
IEC 60068-2-27 -
Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock EN 60068-2-27 -
IEC 60068-2-30 -
Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle) EN 60068-2-30 -
SIST EN IEC 61757-1:2018



EN IEC 61757:2018 (E) 4 Publication Year Title EN/HD Year IEC 60068-2-42 -
Environmental testing - Part 2-42: Tests - Test Kc: Sulphur dioxide test for contacts and connections EN 60068-2-42 -
IEC 60068-2-43 -
Environmental testing - Part 2-43: Tests - Test Kd: Hydrogen sulphide test for contacts and connections EN 60068-2-43 -
IEC 60068-2-78 -
Environmental testing -- Part 2-78: Tests - Test Cab: Damp heat, steady state EN 60068-2-78 -
IEC 60079-28 -
Explosive atmospheres -- Part 28: Protection of equipment and transmission systems using optical radiation EN 60079-28 -
IEC 60529 -
Degrees of protection provided by enclosures (IP Code) - -
IEC 60793-1-20 -
Optical fibres - Part 1-20: Measurement methods and test procedures - Fibre geometry EN 60793-1-20 -
IEC 60793-1-21 -
Optical fibres -- Part 1-21: Measurement methods and test procedures - Coating geometry EN 60793-1-21 -
IEC 60793-1-31 -
Optical fibres -- Part 1-31: Measurement methods and test procedures - Tensile strength EN 60793-1-31 -
IEC 60793-1-32 -
Optical fibres -- Part 1-32: Measurement methods and test procedures - Coating strippability EN 60793-1-32 -
IEC 60793-1-47 -
Optical fibres – Part 1-47: Measurement methods and test procedures – Macrobending loss EN IEC 60793-1-47 -
IEC 60793-1-54 -
Optical fibres – Part 1-54: Measurement methods and test procedures – Gamma irradiation EN IEC 60793-1-54 -
IEC 60794-1-21 -
Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test procedures - Mechanical tests methods EN 60794-1-21 -
IEC 60825-1 -
Safety of laser products -- Part 1: Equipment classification and requirements EN 60825-1 -
IEC 60874-1 -
Fibre optic interconnecting devices and passive components - Connectors for optical fibres and cables -- Part 1: Generic specification EN 60874-1 -
IEC 61000-4-2 -
Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test EN 61000-4-2 -
IEC 61000-4-3 -
Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test - -
SIST EN IEC 61757-1:2018



EN IEC 61757:2018 (E) 5 Publication Year Title EN/HD Year IEC 61000-4-4 -
Electromagnetic compatibility (EMC) -- Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test EN 61000-4-4 -
IEC 61000-4-5 -
Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test EN 61000-4-5 -
IEC 61300 series
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures
EN 61300 series
IEC 61300-2-1 -
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-1: Tests - Vibration (sinusoidal) EN 61300-2-1 -
IEC 61300-2-9 -
Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-9: Tests – Shock EN 61300-2-9 -
IEC 61300-2-18 -
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures -- Part 2-18: Tests - Dry heat - High temperature endurance EN 61300-2-18 -
IEC 61300-2-22 -
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-22: Tests - Change of temperature EN 61300-2-22 -
IEC 61300-2-34 -
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures -- Part 2-34: Tests - Resistance to solvents and contaminating fluids of interconnecting components and closures EN 61300-2-34 -
IEC 61300-2-46 -
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-46: Tests - Damp heat cyclic EN 61300-2-46 -
IEC 61300-3-35 -
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-35: Examinations and measurements - Visual inspection of fibre optic connectors and fibre-stub transceivers EN 61300-3-35 -
IEC 61753 series
Fibre optic interconnecting devices and passive components performance standard
EN 61753 series
IEC/TR 61931 -
Fibre optic - Terminology - -
IEC/TR 62222 -
Fire performance of communication cables installed in buildings - -
IEC/TR 62283 -
Optical fibres - Guidance for nuclear radiation tests - -
SIST EN IEC 61757-1:2018



EN IEC 61757:2018 (E) 6 Publication Year Title EN/HD Year IEC/TR 62627-01 -
Fibre optic interconnecting devices and passive components - Part 01: Fibre optic connector cleaning methods - -
ISO/IEC Guide 99 -
International vocabulary of metrology - Basic and general concepts and associated terms (VIM) - -
SIST EN IEC 61757-1:2018



IEC 61757 Edition 1.0 2018-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic sensors – Generic specification
Capteurs à fibres optiques – Spécification générique
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE
ICS 33.180.99
ISBN 978-2-8322-5303-8
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ®
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. SIST EN IEC 61757-1:2018



– 2 – IEC 61757:2018 © IEC 2018 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Terms and definitions . 10 4 Quality assurance . 17 5 Test and measurement procedures . 17 5.1 General . 17 5.2 Standard conditions for testing . 17 5.3 Test and measurement equipment requirements . 18 5.4 Visual inspection . 18 5.5 Dimensions . 18 5.6 Metrological properties. 18 5.6.1 General . 18 5.6.2 Metrological parameters . 19 5.7 Optical tests . 19 5.7.1 General . 19 5.7.2 Optical power . 19 5.7.3 Nominal wavelength and appropriate spectral characteristics . 19 5.7.4 State of polarization . 19 5.7.5 Fibre connector performance . 19 5.8 Electrical tests . 19 5.8.1 General . 19 5.8.2 Parameters and test procedures . 20 5.8.3 Voltage stress. 20 5.9 Mechanical tests . 20 5.9.1 General . 20 5.9.2 Parameters and test procedures . 20 5.10 Climatic and environmental tests . 21 5.10.1 General . 21 5.10.2 Parameters and test procedures . 21 5.11 Susceptibility to ambient light . 22 5.12 Resistance to solvents and contaminating fluids . 22 6 Classification . 22 6.1 General . 22 6.2 Measurand . 23 6.2.1 General . 23 6.2.2 Presence/absence of objects or features . 23 6.2.3 Position . 23 6.2.4 Rate of positional change . 23 6.2.5 Flow . 23 6.2.6 Temperature . 23 6.2.7 Force per directional vector . 23 6.2.8 Force per area . 24 6.2.9 Strain . 24 6.2.10 Electromagnetic quantities . 24 SIST EN IEC 61757-1:2018



IEC 61757:2018 © IEC 2018 – 3 –
6.2.11 Ionizing and nuclear radiation . 24 6.2.12 Other physical properties of materials . 24 6.2.13 Composition and specific chemical quantities . 24 6.2.14 Particulates . 24 6.2.15 Imaging . 24 6.3 Transduction principle . 24 6.3.1 General . 24 6.3.2 Active generation of light . 24 6.3.3 Atom-field interaction . 24 6.3.4 Coherence modulation . 25 6.3.5 Intensity modulation . 25 6.3.6 Optical spectrum modulation . 25 6.3.7 Phase modulation . 25 6.3.8 Polarization modulation . 25 6.4 Spatial distribution . 25 6.5 Interface level . 25 7 Marking, labelling, packaging and instruction manual . 25 7.1 Marking of component . 25 7.2 Marking of sealed package and instruction manual . 26 8 IEC type designation . 26 9 Safety aspects . 26 9.1 General . 26 9.2 Personal safety . 26 9.3 Safety in explosive environment . 26 10 Ordering information . 26 11 Drawings . 26 Annex A (informative)
Examples of fibre optic sensors . 27 A.1 General . 27 A.2 Presence/absence of objects or features. 27 A.2.1 Limit sensor (button, lever, key) . 27 A.2.2 Level . 27 A.2.3 Proximity . 27 A.2.4 Photo-interruption . 27 A.3 Position . 28 A.3.1 Linear position . 28 A.3.2 Angular position . 28 A.3.3 Proximity . 28 A.3.4 Zone (area) . 28 A.3.5 Dimensional . 28 A.4 Rate of positional change. 28 A.4.1 Linear speed or velocity . 28 A.4.2 Rotational speed or velocity . 28 A.4.3 Gyroscope . 29 A.4.4 Linear acceleration . 29 A.4.5 Rotational acceleration . 29 A.5 Flow . 29 A.6 Temperature . 29 A.7 Force per directional vector . 30 SIST EN IEC 61757-1:2018



– 4 – IEC 61757:2018 © IEC 2018 A.7.1 Seismic. 30 A.7.2 Vibration . 30 A.7.3 Torque . 30 A.7.4 Weight . 30 A.8 Force per area . 30 A.8.1 Acoustic . 30 A.8.2 Pressure . 30 A.9 Strain . 31 A.10 Electromagnetic quantities . 32 A.10.1 Magnetic field . 32 A.10.2 Electrical current . 32 A.10.3 Electric field . 32 A.10.4 Voltage . 32 A.10.5 Electromagnetic radiation . 33 A.11 Ionizing and nuclear radiation . 33 A.12 Other physical properties of materials . 33 A.12.1 Material refractive index . 33 A.12.2 Density . 33 A.12.3 Viscosity . 33 A.12.4 Damage . 33 A.13 Composition and specific chemical quantities . 33 A.13.1 Chemical . 33 A.14 Particulates . 34 A.14.1 Count . 34 A.14.2 Atomic . 34 A.14.3 Turbidity . 34 A.15 Spatial distribution . 34 A.15.1 Single point . 34 A.15.2 Multiple point . 34 A.15.3 Integrating . 34 A.15.4 Distributed . 34 Bibliography . 35
Figure 1 – Fibre optic sensor configuration with a passive sensing element and separate fibre leads for optical input and output . 12 Figure 2 – Fibre optic sensor configuration with an active sensing element and one optical fibre lead for optical output . 12 Figure 3 – Fibre optic sensor configuration with a passive sensing element and one fibre lead for optical input and output . 13
Table 1 – Electrical test parameters and procedures . 20 Table 2 – Mechanical test parameters and procedures. 21 Table 3 – Climatic and environmental test parameters and procedures . 22
SIST EN IEC 61757-1:2018



IEC 61757:2018 © IEC 2018 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
FIBRE OPTIC SENSORS –
GENERIC SPECIFICATION
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 confo
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