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JJF 1630-2017 English PDF

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JJF 1630-2017: Calibration Specification for Fiber-optic Distributed Thermometers
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Basic data

Standard ID JJF 1630-2017 (JJF1630-2017)
Description (Translated English) Calibration Specification for Fiber-optic Distributed Thermometers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A54
Word Count Estimation 18,163
Date of Issue 2017-09-26
Date of Implementation 2017-12-26
Regulation (derived from) General Administration of State Quality Inspection Announcement 2017 No. 78
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine

JJF 1630-2017: Calibration Specification for Fiber-optic Distributed Thermometers

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(Standard Specification for Distributed Fiber Optic Thermometer Calibration) People's Republic of China National Measurement Specifications Distributed optical fiber thermometer calibration specification Calibration Specification for Fiber-opticDistributedThermometers 2017-09-26 Posted 2017-12-26 Implementation General Administration of Quality Supervision, Inspection and Quarantine released Distributed optical fiber thermometer calibration specification The focal point. National Temperature Measurement Technical Committee The main drafting unit. Beijing Institute of Metrology China University of Metrology Beijing traffic industry energy-saving emission reduction center Participate in the drafting unit. Shanghai Institute of Measurement and Testing Technology Beijing Jiaotong University Xinjiang Uygur Autonomous Region Institute of Metrology Liaoning Province Institute of Metrology This specification entrusts the national temperature measurement technical committee to be responsible for explaining The main drafters of this specification. Zhang Ke (Beijing Institute of Metrology and Measurement) Chen Le (China University of Metrology) Liu Ying (Beijing Traffic Industry Energy Conservation Center) Participate in the drafters. Zhang Liping (Shanghai Institute of Measurement and Testing Technology) Liang Sheng (Beijing Jiaotong University) Ma Xiaochun (Xinjiang Uygur Autonomous Region Institute of Metrology) Liang (Liaoning Institute of Metrology)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terms (1) 3.1 Distributed Fiber Thermometer (1) 3.2 temperature fiber (1) 3.3 Minimum temperature (1) 3.4 Temperature Positioning (1) 4 Overview (1) 5 Metrology (2) 6 Calibration conditions (3) 6.1 Environmental conditions (3) 6.2 standard equipment and ancillary equipment (3) 7 Calibration Items and Calibration Methods (3) 7.1 Calibration Items (3) 7.2 Calibration Methods (3) 7.3 Calibration Results Processing (5) 8 expression of calibration results (5) Appendix A Distributed Fiber Thermometer Calibration Original Records (7) Appendix B Calibration Certificate Internal Page Format (9) Appendix C distributed fiber optic thermometer minimum temperature verification method (10) Appendix D distributed fiber optic thermometer temperature indication error calibration uncertainty evaluation example (11)

Introduction

This specification is based on JJF 1071-2010 "National Metrology Calibration Rules Preparation Rules" drafting, in which the measurement results are not The determination of the degree of certainty is based on JJF 1059.1-2012 "Evaluation and Expression of Measurement Uncertainty". This specification is first released. Distributed optical fiber thermometer calibration specification

1 Scope

This standard applies to distributed optical fiber thermometer calibration (-20 ~ 100) ℃ range, in other temperature range The calibration can refer to this specification.

2 reference documents

This specification cites the following documents. JJG160 standard platinum resistance thermometer Environmental testing for electric and electronic products - Overview and guidance For dated references, only the dated version applies to this specification; for undated references The latest version (including all amendments) applies to this specification.

3 Terms

3.1 Distributed Fiber Thermometer fiber-opticdistributedthermometer Is the use of optical fiber geometry of the one-dimensional transmission characteristics measured in the entire fiber length corresponding to the fiber path distribution The system for continuous measurement of temperature. The system provides the spatial distribution of temperature and its status over time. 3.2 temperature fiber temperature-sensingopticalfiber Fiber optic or fiber optic cable with temperature sensing in distributed fiber thermometers. 3.3 minimum temperature length minimumlengthoftemperature-sensing Distributed fiber optic thermometer along the optical fiber length distribution of the temperature measurement accuracy of the temperature required to minimize the optical fiber length. 3.4 temperature positioning temperaturepositioning In the positioning function of the distributed optical fiber thermometer, the temperature-position relationship is determined by the extreme value of the temperature-sensitive optical fiber temperature The corresponding temperature sensing fiber length position. Note. The extreme temperature described in this specification means that when the calibration temperature is higher than the ambient temperature, whichever is the highest; when the calibration temperature is lower than the ambient When the temperature, take the lowest value.

4 Overview

Distributed optical fiber thermometer, also known as distributed optical fiber temperature measurement system, is a real-time measurement of space temperature field measuring system. Mainly include distributed optical fiber thermometer host and temperature fiber. Sensing fiber is both sensing media Lose media At present, the distributed optical fiber thermometer mainly uses the temperature effect of optical fiber Raman scattering to measure the temperature, The temperature field of each point in space modulates the Raman scattering wave transmitted in the optical fiber. After demodulation, the information of the space temperature field is real-time In the time domain, the use of optical time-domain reflection, the optical fiber by the propagation velocity and backscattered light echo time Temperature measurement point for positioning. Distributed fiber optic thermometer minimum temperature, also known as spatial resolution or standard alarm length Degree, in the actual measurement only the immersion length of the temperature sensing fiber is not less than its minimum temperature sensing length, distributed optical fiber thermometer

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