In our daily life, there are many water places that need to be used for water quality monitoring, and water dissolved oxygen detection is one of the most important water quality parameters that is often monitored. Especially for fish pond farmers, the water quality monitoring of dissolved oxygen is more important, because most farmers understand that fish farming is very need to control the concentration of dissolved oxygen in water.
It should be known that different kinds of fish live in the same PH water environment, and their development degree, growth cycle and health degree are different, so the water PH value should be monitored and regulated strictly in accordance with the growth environment of different kinds of fish. Today, with the development of science and technology, most fish pond farms are using online PH sensors to monitor the PH value of fish ponds. Dissolved oxygen is also the case, the dissolved oxygen value in water is too large or too small will lead to fish pond is not suitable for fish farming, so dissolved oxygen is also needed to use dissolved oxygen analyzer for parameter monitoring and control.
Why is dissolved oxygen analyzer important for fish pond farming?
Dissolved oxygen is closely related to the partial pressure of oxygen in the air, atmospheric pressure, water temperature and water quality. At 20℃, 100kPa, about 9mg/L dissolved oxygen in pure water. Some organic compounds biodegrade under the action of aerobic bacteria, consuming dissolved oxygen in water. If organic matter is measured in terms of carbon, according to C+O2=CO2, for every 12g of carbon, 32g of oxygen is consumed.
When the dissolved oxygen value in the water falls to 5mg/L, some fish have difficulty in breathing. The dissolved oxygen required by the normal growth and development of the main cultured fish is generally above 4~5mg/L. At this time, the fish feed well, grow fast, and the utilization rate of erbium material is high.
When dissolved oxygen is lower than this value, fish feeding and growth will be affected to a certain extent.
When dissolved oxygen was less than 2mg/L, fish basically stopped feeding.
When dissolved oxygen drops to about 1mg/L will float head;
When dissolved oxygen is further reduced to 0.5mg/L, suffocation can be killed;
And dissolved oxygen on the high side of the general fish no harm, dissolved oxygen is too high easy to bubble disease.
Dissolved oxygen in the water is constantly replenished by oxygen in the air and by photosynthesis in green aquatic plants.
Fine - smooth development of dissolved oxygen analyzer is used measure fluorescence quenching principle, can overcome the traditional classical measurement method can't for continuous online water quality monitoring of faults, probe without replacement diaphragm, can be used long-term maintenance free, easy installation, responsive, without calibration, greatly reduce the maintenance workload in the instrument to use. Widely used in aquaculture, sewage treatment plants, environmental monitoring departments, fish ponds, factories and other fields.