IEC 61757:2018 is a generic specification covering optical fibres, components and sub-assemblies 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. Keywords: fibre optic sensors<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figures Figure 1 \u2013 Fibre optic sensor configuration with a passive sensing elementand separate fibre leads for optical input and output Figure 2 \u2013 Fibre optic sensor configuration with an active sensing elementand one optical fibre lead for optical output <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Figure 3 \u2013 Fibre optic sensor configuration with a passive sensing elementand one fibre lead for optical input and output <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 4 Quality assurance 5 Test and measurement procedures 5.1 General 5.2 Standard conditions for testing <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 5.3 Test and measurement equipment requirements 5.4 Visual inspection 5.5 Dimensions 5.6 Metrological properties 5.6.1 General <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 5.6.2 Metrological parameters 5.7 Optical tests 5.7.1 General 5.7.2 Optical power 5.7.3 Nominal wavelength and appropriate spectral characteristics 5.7.4 State of polarization 5.7.5 Fibre connector performance 5.8 Electrical tests 5.8.1 General <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 5.8.2 Parameters and test procedures 5.8.3 Voltage stress 5.9 Mechanical tests 5.9.1 General 5.9.2 Parameters and test procedures Tables Table 1 \u2013 Electrical test parameters and procedures <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 5.10 Climatic and environmental tests 5.10.1 General 5.10.2 Parameters and test procedures Table 2 \u2013 Mechanical test parameters and procedures <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 5.11 Susceptibility to ambient light 5.12 Resistance to solvents and contaminating fluids 6 Classification 6.1 General Table 3 \u2013 Climatic and environmental test parameters and procedures <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 6.2 Measurand 6.2.1 General 6.2.2 Presence\/absence of objects or features 6.2.3 Position 6.2.4 Rate of positional change 6.2.5 Flow 6.2.6 Temperature 6.2.7 Force per directional vector <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 6.2.8 Force per area 6.2.9 Strain 6.2.10 Electromagnetic quantities 6.2.11 Ionizing and nuclear radiation 6.2.12 Other physical properties of materials 6.2.13 Composition and specific chemical quantities 6.2.14 Particulates 6.2.15 Imaging 6.3 Transduction principle 6.3.1 General 6.3.2 Active generation of light 6.3.3 Atom-field interaction <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 6.3.4 Coherence modulation 6.3.5 Intensity modulation 6.3.6 Optical spectrum modulation 6.3.7 Phase modulation 6.3.8 Polarization modulation 6.4 Spatial distribution 6.5 Interface level 7 Marking, labelling, packaging and instruction manual 7.1 Marking of component <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 7.2 Marking of sealed package and instruction manual 8 IEC type designation 9 Safety aspects 9.1 General 9.2 Personal safety 9.3 Safety in explosive environment 10 Ordering information 11 Drawings <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Annex A (informative) Examples of fibre optic sensors A.1 General A.2 Presence\/absence of objects or features A.2.1 Limit sensor (button, lever, key) A.2.2 Level A.2.3 Proximity A.2.4 Photo-interruption <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | A.3 Position A.3.1 Linear position A.3.2 Angular position A.3.3 Proximity A.3.4 Zone (area) A.3.5 Dimensional A.4 Rate of positional change A.4.1 Linear speed or velocity A.4.2 Rotational speed or velocity <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | A.4.3 Gyroscope A.4.4 Linear acceleration A.4.5 Rotational acceleration A.5 Flow A.6 Temperature <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | A.7 Force per directional vector A.7.1 Seismic A.7.2 Vibration A.7.3 Torque A.7.4 Weight A.8 Force per area A.8.1 Acoustic A.8.2 Pressure <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | A.9 Strain <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | A.10 Electromagnetic quantities A.10.1 Magnetic field A.10.2 Electrical current A.10.3 Electric field A.10.4 Voltage <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | A.10.5 Electromagnetic radiation A.11 Ionizing and nuclear radiation A.12 Other physical properties of materials A.12.1 Material refractive index A.12.2 Density A.12.3 Viscosity A.12.4 Damage A.13 Composition and specific chemical quantities A.13.1 Chemical <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | A.14 Particulates A.14.1 Count A.14.2 Atomic A.14.3 Turbidity A.15 Spatial distribution A.15.1 Single point A.15.2 Multiple point A.15.3 Integrating A.15.4 Distributed <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fibre optic sensors. Generic specification<\/b><\/p>\n |