In the field of water quality monitoring, Fengtu's FT-S8 fluorescence-based Dissolved oxygen sensor performs quite well.
The FT-S8 operates based on the principle of fluorescence quenching. When the excitation light irradiates the fluorescent substances on the surface of the fluorescent film head, fluorescence is generated under excitation. The concentration of oxygen molecules affects the fluorescence quenching time. By detecting the fluorescence lifetime, the concentration of oxygen molecules can be calculated. After compensation for temperature, air pressure, and salinity, accurate values are output. Thanks to this principle, it requires no electrolyte, eliminating the problem of electrode polarization and oxygen consumption. It is not affected by the flow rate, sulfides, and other chemical substances, ensuring a rapid response and high precision.
The performance parameters are as follows:
The measurement range is 0 - 20 mg/L (0 - 200% saturation), enabling it to cope with various water quality environments. The measurement error is within ±3% FS (at 25°C), and the resolution reaches 0.01 mg/L and 0.1%, allowing it to accurately capture minute changes in dissolved oxygen. In terms of dimensions, its length is 170.2 mm, the outer diameter is 30 mm, and the electrical interface is a 3/4-inch thread, facilitating easy installation. With a protection level of IP68, it is waterproof and dustproof and can work stably in harsh environments. Its service life is approximately one year, and the electrodes need to be replaced in a timely manner after aging. Routine maintenance is simple. The dirt on the outer surface can be wiped off with tap water or a detergent solution, and the fluorescent cap only requires special treatment.
The working environment temperature ranges from 0 to 40°C. The whole machine is powered by DC 10 - 30V, with an average power consumption of 0.2W, demonstrating low energy consumption. It is also equipped with an RS485 output communication interface and the MODBUS-RTU communication protocol, facilitating integration with various devices such as PLCs and DCSs, enabling remote monitoring and data management and enhancing the intelligent level of monitoring.
In aquaculture, the FT-S8 fluorescence-based Dissolved oxygen sensor can monitor the dissolved oxygen in water bodies in real-time, creating a suitable environment for the growth of aquatic organisms.
In the environmental protection water treatment industry, it helps to monitor and control the dissolved oxygen concentration during the sewage treatment process, ensuring the treatment effect.
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