Shanghai Xunji Electric Equipment Co., Ltd.

Recoverable linear fiber optic differential constant temperature fire detector
The distributed fiber optic temperature measurement system is a temperature analysis instrument based on fiber optics and laser monitoring technology. Capable of long-distance, large-scale distributed temperature monitoring. It scans the sensing fiber once and can complete the temperature measurement and data storage of thousands of collection points on the fiber. A variety of alarm functions can detect potential accident hazards in the monitored objects in advance, locate and analyze them, especially the analysis of the temperature change process, and timely improve the level of safety production management. In addition, the distributed optical fiber temperature measurement system has inherent high stability and High reliability, can provide long-term uninterrupted monitoring.
The distributed optical fiber temperature sensing system detects temperature changes at different locations along the optical fiber based on the optical time domain reflection of the optical fiber and the temperature effect of the optical fiber backscatter, achieving truly distributed measurement. The working principle is mainly based on the fact that when the incident light passes through the optical fiber, the light scattering rate is different due to the different temperatures of the fiber body, which in turn affects the change in the intensity of the scattered light received by the light emitting end, thereby calculating the temperature value. Since the propagation speed of light in the fiber is constant, the temperature distribution along the fiber body can be calculated based on the sequence and time interval of the scattered light received at the transmitting end.
Product Features
Passed the formal experimental test of the National Fire Electronic Products Quality Supervision and Inspection Center.
The measurement distance is long, suitable for remote monitoring.
Continuous distributed measurement, simple installation and flexible layout.
High sensitivity, high measurement accuracy, fast response.
It has excellent electromagnetic insulation, is not susceptible to interference, will not produce sparks, is safe and reliable, and has intrinsic lightning protection.
Typical applications
Monitoring the temperature distribution along highways, subways, railway tunnels, etc. for disaster prediction
Fire monitoring and alarming in industrial and civil buildings
Cable tunnels, cable trays, Temperature monitoring and alarming of high-voltage power cables, overhead line cables, submarine cables, etc.
Temperature monitoring and alarming inside power plant generator busbars and large power transformers
Coal conveying belts, steam in coal mines, power plants, chemical industries and other enterprises Temperature monitoring and fire alarm of pipelines, high-voltage switch cabinets and other equipment
Temperature monitoring and alarm of dangerous goods warehouses such as oil tanks, gas tanks, coal bunkers and pressure vessels such as gasifiers and reaction tanks
Granaries, cold storage, Large-area, wide-range temperature and fire monitoring and alarming in warehouses, cigarette factories and other places
Temperature detection and alarming of main structures of important construction facilities such as bridges, water conservancy dams, military projects and other places
Temperature and leakage of energy transmission pipelines Monitor and alarm temperature detection and alarm of municipal pipeline facilities such as urban gas pipelines, communication optical cables, water pipelines, and thermal pipelines.