T/GDCKCJH 025-2020 Active Group standards

T/GDCKCJH 025-2020 Distributed optical temperature/strain/vibration sensor performance parameter measurement method

Publish Date: 2020-08-21 Implement Date: 2020-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 20.00

Out of stock

Basic Information

Standard Code: T/GDCKCJH 025-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Electronic measurement and instruments

ICS Name: Other standards related to optics and optical measurement

Publish Date: 2020-08-21

Implement Date: 2020-10-01

Scope

Scope: This standard specifies the terms and definitions, test conditions, and requirements for the performance parameters of distributed fiber optic temperature/strain/vibration sensors. It applies to the performance parameter testing of distributed fiber optic temperature/strain/vibration sensors. Main technical content: Unlike conventional point-type fiber optic sensors and their networking systems, distributed fiber optic sensors do not require the preparation of microstructures on the transmission fiber or the design of special fiber optical paths. They can achieve distributed measurement using the transmission fiber itself, so their testing methods mainly include the following important aspects: - Sensing distance: The physical length of the fiber along the fiber length direction where effective measurement can be achieved. Within this range, effective measurement can be achieved at any position on the fiber. During the test, a certain length of fiber is taken at the 99% remote position of the sensing distance for effective measurement. - Spatial resolution: The minimum fiber length that can be distinguished and identified when effective measurement is achieved along the fiber length direction. This spatial resolution specifically refers to the effective spatial spacing on the fiber length during the sensing process. At the 99% remote position of the sensing distance, a certain length of fiber is taken for effective measurement. The fiber distance between 10% and 90% of the step change value of the disturbance information measured by the distributed fiber optic sensor corresponds to the spatial resolution. - Measurement range: Within the measurement range of the distributed fiber optic sensor, select a measurement range of 5% to 95% and apply the test signal of the measurement equipment in increments of 10%. Measure the demodulated output signal of the sensor and record and analyze the difference between the demodulated output signal and the applied signal of