Brief introduction: Dba-fli fiber Bragg grating water level meter adopts fiber metallized laser welding technology and temperature self-compensation package structure, which has the characteristics of complete range specifications, high measurement accuracy, long-term zero point stability, small temperature drift, easy installation and use, etc. The pressure sensitive elements and transmission lines inside the sensor are all single-mode optical fiber, which is not charged and is not affected by electromagnetic interference and radiation. It can work stably in the dangerous environment of strong electromagnetic interference and inflammable explosion for a long time. It is widely used to monitor pore water level or water pressure in earth DAMS, concrete buildings, bedrock, boreholes (Wells), foundations, pipelines and pressure vessels in petrochemical, electric power, water conservancy and hydropower projects. Stainless steel outer packing structure, suitable for all kinds of harsh corrosion environment. Product features: 1. High precision, high stability and high reliability; 2. Intrinsically safe, it is not subject to electromagnetic interference, corrosion resistance, pollution resistance and lightning resistance. It can be used under severe conditions such as strong electromagnetic interference, high lightning, inflammability and explosion resistance. 3.Sensing signal transmission distance is long, up to 40Km; 4. Quasi-distributed measurement, multiple sensors can be connected in parallel on a single optical fiber (typical: 6 sensors); 5. A fiber Bragg grating temperature sensor is installed internally to compensate for the influence caused by temperature change; 6. Simple layout, can be mixed with other types of fiber Bragg grating sensors. Application: Measurement of water level and flow in open channels underground; Water level measurement of tunnels and underground buildings; Measurement of underground water level of slope and tailings pond; Seepage and pressure observation of dam. Technical parameters: Range (m) : 1,5,10,100,200,500 Resolution (F•S) : less than 0.01% Accuracy (F•S) : less than or equal to 0.3% The temperature measurement accuracy (℃) : 0.1 mm Working temperature range (℃) : - 50 ~ + 80 Outside diameter size (mm) : 10-20 Ф Ф Encapsulation: armoring Installation: bundling or fixing support Sensor head lead wire: 1.5m high temperature resistant armored optical cable Stage connection between sensor heads: welding or connector connection Number of parallel connection of single core fiber: 6
