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BS EN IEC 61757-5-1:2021

BS EN IEC 61757-5-1:2021

$142.49

Fibre optic sensors – Tilt measurement. Tilt sensors based on fibre Bragg gratings

Published By Publication Date Number of Pages
BSI 2021 28
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This document defines terminology, structure, characteristics and their measurement method including the procedures for an optical tilt sensor based on fibre Bragg gratings (FBGs) as the sensitive element.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
3 Terms and definitions
13 4 Symbols
14 5 Structure and characteristics
5.1 Fibre Bragg grating (FBG)
5.2 FBG tilt sensor configuration
15 Figures
Figure 1 – Examples for measuring single axis tilt changes
Figure 2 – Examples of Bragg wavelength change caused by tilt
16 5.3 Reference wavelength
5.4 Stability behaviour
5.4.1 Drift and creep
Figure 3 – Example of tilt sensor using FBG (schematic diagram)
17 5.4.2 Hysteresis
5.5 Test specimen
5.6 Indication of the measured values
5.7 Zero point related measurement
5.8 Non-zero point related measurement
5.9 Production set
18 5.10 FBG tilt sensor standard type
5.11 FBG tilt sensor series
6 Features and characteristics to be measured
6.1 Sampling and statistical evaluation
6.1.1 Sampling
6.1.2 Reporting the measuring result
19 6.1.3 Sample conditioning
6.1.4 Ambient test conditions
6.1.5 Required type of test for individual characteristics
6.2 Bragg wavelength λΒ
6.2.1 General
Table 1 – Required type of test for individual characteristics
20 6.2.2 Measuring procedure
6.2.3 Evaluation
6.2.4 Reporting
6.3 FBG spectral width
6.3.1 Measuring procedure
6.3.2 Evaluation
6.3.3 Reporting
21 6.4 FBG reflectivity
6.4.1 Measuring procedure
6.4.2 Evaluation
6.4.3 Reporting
6.5 Tilt measurement
6.5.1 Test set-up
Figure 4 – Schematic diagram of tilt measurement system
22 6.5.2 Measuring procedure
Figure 5 – Example of temperature dependence of the Bragg wavelengths of two FBGs
23 6.5.3 Calibration and evaluation
Figure 6 – Example of tilt dependence of the Bragg wavelengths of FBG1 and FBG2
24 6.6 Gauge factor κθ
6.7 Temperature and humidity ranges
6.7.1 General
6.7.2 Measuring procedure
25 6.7.3 Evaluation
6.7.4 Reporting
7 Features and characteristics to be reported
7.1 Construction details
7.2 Configuration of the FBG tilt sensor
7.3 Temperature and humidity range
7.4 Connecting requirement
8 Recommendations for use of FBG measuring instruments

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BS EN IEC 61757-5-1:2021
$142.49