Distributed Fiber Optic Temperature Measurement System

System Description

This system is also known as the distributed fiber optic temperature real-time monitoring system. Our company's distributed fiber optic temperature measurement system consists of the HAA FS-1020 series distributed fiber optic sensing analyzer and temperature sensing optical cable. The temperature monitoring host utilizes the principles of fiber Raman scattering (OTDR) and optical time domain scattering to lay temperature sensing optical cables on the surface of the cable. Realize real-time online monitoring of temperature and fire conditions during the production process, with the ability to achieve large-scale, long-distance real-time temperature monitoring. It has advantages that traditional temperature sensors cannot compare with, such as essential insulation, explosion-proof, lightning protection, anti-corrosion, and electromagnetic interference resistance.




system architecture

The distributed fiber optic temperature measurement system is equipped with a backend service system by the distributed fiber optic sensing analyzer, which collects the temperature of the fiber optic cable wherever it goes. Data collection and storage, users only need to remotely control the operating system through the network on the client PC, and the monitoring station can be unmanned; The system has a SMS sending function. When a line abnormality is detected, the system will automatically notify the administrator of the specific location and temperature of the abnormal point through SMS, so as to handle it in a timely manner and eliminate accidents caused by cable overheating. The software system can intuitively display the temperature change information and location of the measured point.



Parameter Description

Number of monitoring host channels: 4 channels (customizable)

Working principle: Raman scattering, optical time-domain scattering principle

Measurable range: 10km (customizable)

Usage time: ≥ 0.4m

Measurement time: 3-5 seconds

Measurement accuracy: ± 1 ℃

Strain accuracy: ± 20u ξ

定位精度： 1m

Working environment: Temperature: 0~45 ℃ Humidity: 0~80% (no condensation)

Distributed temperature sensing optical cable

Adopting metal tube protection, with high overall strength, suitable for concrete and steel structure working conditions, and high survival rate of construction optical cables under harsh conditions. Fiber optic cables can be attached to high-voltage line cables under test and are widely used for strain monitoring in petrochemical pipelines, as well as temperature strain monitoring in civil engineering fields such as bridges, tunnels, dams, and slopes.





Parameter fiber type: Single mode

Fiber optic cable type: metal armor

Number of fiber cores: 2

Fiber optic cable cross-sectional size: φ 3.5mm

Fiber optic cable weight: 38kg/km

Tensile strength: 650N

Working temperature: -20~100 ℃

System Features

Fiber optic end probe attached to the surface of the measured object to measure temperature

Temperature measurement fiber immunity to electromagnetic field interference

For high-voltage insulation, flame and explosion prevention

Multi point temperature measurement and digital signal output

Fiber optic probe small

High precision and sensitivity, high pressure and corrosion resistance, remote monitoring, long service life, small size, making instrument maintenance simple and convenient, and safe transportation. Its internal modular integrated design is aesthetically pleasing and reasonable.

Temperature measurement has technical advantages in special environments such as high voltage and strong electromagnetic interference.

Easy installation

The optical cable can be directly laid on the surface of the tested cable, and the cable joints should be closely monitored. The software system can intuitively display the temperature change information and location of the measured point.



Application field

Temperature monitoring and current carrying capacity evaluation of high-voltage cables in cable trenches, cable trays, and cable tunnels in the power, coal mining, petrochemical, and steel metallurgy industries;

Temperature monitoring and fire warning for highway tunnels, river crossing tunnels, and subway tunnels;

Real time online temperature monitoring of important areas and equipment such as coal mine goaf temperature monitoring, port overturning machine area, conveyor belt conveyor, grain silo, silo, etc;

Temperature monitoring of oil storage tank tops, tank bodies, and tank pipelines;

Temperature monitoring of concrete solidification and maintenance for dams, riverbanks, and bridges;

Monitoring of temperature and strain caused by leakage in crude oil pipelines, natural gas pipelines, and natural water pipelines.