GH/T 1320-2020 in English
VALIDTechnical specifications for distributed optical fiber temperature monitoring systerm of cotton warehouse
- Issued on:2020-12-07
- Implemented on:2021-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$262.00
本标准规定了棉花仓库分布式光纤温度监测的术语和定义、总则、监测设备技术要求、安装与布设要求、设备运行与维护要求、监测方法、监测报告、信息反馈及处理。
本标淮适用于棉花仓库（包括各类棉花储备库、经营库）的分布式光纤温度监测的实施。
Introduction
Analysis of standard technical framework
This standard constructs a complete monitoring system including sensing system host and temperature sensing optical cable. The technical indicators are as follows:
| Parameters | Indicator requirements | International comparison |
|---|---|---|
| Temperature range | -40℃~100℃ | IEC 60751 Class A |
| Spatial resolution | ≤1m | DTS international standard |
| Alarm response time | ≤20s(within 16km) | EN54-22 |
Core Technology Innovation
U-shaped layout solutionThe dynamic retraction and release of the temperature-sensing optical cable is achieved through mechanical guide rails. A typical case shows that a 42m×24m warehouse uses 805m of optical cable to achieve full coverage of 4 cotton stacks, solving the blind spot problem of traditional point-type temperature measurement.
Key points of implementation
- Optical cable splicing loss needs to be ＜0.05dB (YD 5121-2010)
- Bending radius ≥20 times of optical cable diameter
- Temperature difference alarm threshold setting should be dynamically adjusted (ambient temperature +5~15℃)
Industry application value
Compared with traditional smoke detectors, distributed optical fiber systems can achieve:
- Early temperature rise warning (alarm before 62℃)
- Precise positioning (≤1m error)
- Anti-electromagnetic interference (GB 16280-2014 certification)
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