Aquaculture Dissolved Oxygen Controller

The term dissolved oxygen must be familiar to everyone. Dissolved oxygen, as the name suggests, is the amount of dissolved oxygen in the water. This parameter is an essential parameter whether it is used in the water quality monitoring of the sewage discharged from our factory or in our daily application in fish ponds and other aquaculture industries. So what instrument should be used to control and measure dissolved oxygen parameters? Take our common aquaculture industry, the aquaculture industry needs stable online monitoring to control the quality of aquaculture, so it needs to use a dissolved oxygen control instrument for aquaculture. Today, the editor will take you a brief understanding of the breeding dissolved oxygen control instrument.　　Before understanding the aquaculture Dissolved Oxygen Controller, the editor will first popularize a concept for everyone, that is, Dissolved Oxygen. The molecular oxygen in the air dissolved in water is called dissolved oxygen. Dissolved oxygen value is a basis for studying the self-purification ability of water. The dissolved oxygen in the water is consumed, and it takes a short time to return to the original state, which indicates that the water body has strong self-purification ability, or that the water body pollution is not serious. Otherwise, it means that the water body is seriously polluted, the self-purification ability is weak, or even the self-purification ability is lost, which is undoubtedly extremely unfavorable for breeding.　　 Dissolved oxygen is closely related to the partial pressure of oxygen in the air, atmospheric pressure, water temperature and water quality. When the dissolved oxygen value in the water drops to 5mg/L, some fish will have difficulty breathing. The dissolved oxygen required for the normal growth and development of the main farmed fishes is generally above 4~5mg/L. At this time, the fish eat well. , Rapid growth, high utilization rate of erbium; when the dissolved oxygen is lower than this value, the fish’s food intake and growth will be affected to a certain extent; when the dissolved oxygen is lower than about 2mg/L, the fish basically stop eating; when the dissolved oxygen When it drops to about 1mg/L, it will float; when the dissolved oxygen drops further to 0.5mg/L, it will suffocate and die. It seems that these data are illusory, but when we make good use of the dissolved oxygen controller to monitor, then these data are actually indicators that need to be implemented.　　The dissolved oxygen in the water should not be too high or too low. Dissolved oxygen in the water will be constantly replenished due to the dissolution of oxygen in the air and the photosynthesis of green aquatic plants. But when the water body is polluted by organic matter, the oxygen consumption is serious, and the dissolved oxygen cannot be replenished in time, the anaerobic bacteria in the water body will quickly multiply, and the organic matter will turn black and smelly due to corruption. When the dissolved oxygen is improperly controlled, the water body is polluted and the fish cannot survive naturally, so the follow-up work of aquaculture is out of the question. Therefore, when we find that the dissolved oxygen in the water is not a normal indicator, we must immediately take measures to control the dissolved oxygen value within the theoretical value range, and then adjust it according to the actual local conditions and experience, and the final result is complete. the result of.　　 Most of the pond culture in our country still relies on manual observation of fish and shrimp floating heads to open an aerator. There is a certain hysteresis, and the floating head phenomenon is unavoidable. Once the floating head starts, it indicates that the dissolved oxygen content of the pond is too low. It is necessary to increase oxygen for rescue immediately. Although timely rescue can prevent large-scale flooding of the pond, it has adversely affected the normal growth of fish and the water quality of the pond. Therefore, it is necessary to use an online dissolved oxygen meter for real-time monitoring and advance control through actual data. Conventional dissolved oxygen detector, the measurement range is generally 0-20mg/L, the membrane method (of course, economic conditions permit the use of fluorescence method) dissolved oxygen meter for measurement, and the measured signal is converted into a dissolved oxygen controller Acceptable signals, such as 4-20mA signal or RS485 communication, so that on the one hand, the dissolved oxygen can be detected by the on-site control equipment, and on the other hand, it can also be watched on the spot to monitor the breeding situation in real time. Kaidi is a manufacturer that produces online dissolved oxygen meters. The one-stop service provided by professional engineers can provide you with better selection services for breeding dissolved oxygen controllers and provide you with good after-sales service.