During the breeding process, due to climate change or deterioration of water quality, the dissolved oxygen in the water is low. At this time, the breeding personnel need to supplement oxygen. In the past, farming was based on experience. The staff needs Sanxuntang, when will the oxygen be added? How much? It can only be “estimated”, if the adjustment is not accurate, it will affect the growth of animals in the water. Today, the aquaculture industry is in the stage of transformation and upgrading, and the use of scientific and technological power for smart farming is becoming the mainstream trend. SenTec has recently launched a fluorescence dissolved oxygen sensor, which can monitor the dissolved oxygen concentration signal of each breeding pond in real time by using the fluorescence measurement principle, which is scientific and accurate, and saves time and effort. Corresponding measures to achieve the effect of smart farming. It can be widely used in water treatment, aquaculture, biological reaction, environmental monitoring, laboratory, medical and many other fields.
principle of fluorescent dissolved oxygen sensor
This sensor mainly uses the principle of fluorescence quenching. The blue light irradiates the fluorescent material to excite the fluorescent material and emit red light. Since oxygen molecules can take away energy (quenching effect), the time and intensity of the excited red light are inversely proportional to the concentration of oxygen molecules. By measuring the phase difference between the excitation red light and the reference light and comparing it with the internal calibration value, the concentration of oxygen molecules can be calculated.
Comparative advantages of fluorescent dissolved oxygen sensors
1. Dissolved oxygen sensor does not consume oxygen
This device does not consume oxygen, has no requirements for flow rate and agitation, and meets the needs of oxygen measurement.
2. High-precision probe of dissolved oxygen sensor
The device has higher resolution and measurement accuracy, and the measurement is fast and responsive.
3. Dissolved oxygen sensor wide voltage power supply
The equipment adopts wide voltage power supply, DC 10~30V can be used, which can adapt to various DC power sources on site.
4. Dissolved oxygen sensor RS485 communication interface
The equipment adopts MODBUS RTU communication protocol, which can be easily connected to the computer for monitoring and communication.
5. Dissolved oxygen sensor temperature compensation
The device has a built-in temperature transmitter with automatic temperature compensation, which can reduce measurement errors and increase accuracy.
6. Dissolved oxygen sensor is maintenance-free for a long time
The equipment does not need to replace the diaphragm and electrolyte, is basically maintenance-free, and has a service life of up to one year.
7. Dissolved oxygen sensor high protection housing
The equipment has a high-protection and corrosion-resistant shell, with a waterproof rating of IP68, which is more stable; the bottom is made of 316 stainless steel, which is resistant to salt-alkali corrosion for a long time.
8. Dissolved oxygen sensor can be uploaded to our cloud platform
The equipment can be uploaded to the free cloud platform provided by our company through the environmental monitoring host to realize the functions of mobile phone, computer and tablet remote monitoring, real-time data display, automatic alarm over limit, historical data query, data export and other functions.
