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BS EN IEC 61757-1-2:2023

BS EN IEC 61757-1-2:2023

$142.49

Fibre optic sensors – Strain measurement. Distributed sensing based on Brillouin scattering

Published By Publication Date Number of Pages
BSI 2023 30
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PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
6 English
CONTENTS
7 FOREWORD
9 INTRODUCTION
10 1 Scope
2 Normative references
3 Terms, definitions, abbreviated terms and symbols
3.1 Terms and definitions
12 Figures
Figure 1 – Optical fibre strain profile and related strain sample points
14 3.2 Abbreviated terms
15 3.3 Symbols
4 General test setups for measurement of performance parameters
4.1 General and test setup requirements
16 Figure 2 – General test setup for single-ended configuration
17 Figure 3 – General test setup for loop configuration
19 Figure 4 – Measured versus applied strain (typical curve)
Figure 5 – Brillouin frequency shift as a function of elongationof a standard telecommunication fibre
20 4.2 General documentation requirements
5 Measurement procedures for performance parameters
5.1 Strain measurement error
5.1.1 Test procedure and conditions
21 5.1.2 Parameter calculation and reporting
5.2 Spatial resolution
5.2.1 Test procedure and conditions
22 5.2.2 Parameter calculation and reporting
5.3 Strain repeatability
5.3.1 Test procedure and conditions
5.3.2 Parameter calculation and reporting
23 5.4 Spatial strain uncertainty
5.4.1 Test procedure and conditions
5.4.2 Parameter calculation and reporting
24 5.5 Warm-up time
5.5.1 Test procedure and conditions
5.5.2 Parameter calculation and reporting
5.6 System performance with altered attenuation
5.6.1 General
25 5.6.2 At distance measurement range
Figure 6 – Performance evaluation at distance measurement range
26 5.6.3 At short distance with high loss
Figure 7 – Performance evaluation at short distance with high loss
28 Bibliography

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BS EN IEC 61757-1-2:2023
$142.49