Aquaculture

Whether it is fish, mussels or other aquatic organisms, there must be an suitable environment for their growth in order to achieve a good harvest. The environmental conditions of water are one of the important reasons that affect the yield of aquatic products. With the acceleration of the construction of the Internet of Things, the intelligence of aquaculture has also become a development trend of large-scale aquaculture in the future. Using the Internet of Things intelligent platform, sensors collect front-end data, and send it back to the control center through the cloud platform to guide and improve aquaculture measures in a timely manner to increase the benefits of aquaculture. For example, according to different weather conditions, the aerator should be turned on in time to ensure that there is enough dissolved oxygen in the fish pond. Usually, aquaculture does need to pay attention to the water quality conditions of the pond, such as the pH value, oxygen content, ORP value, ammonia nitrogen content and other data of the water body. Once the data is abnormal, necessary measures must be taken in time, otherwise it may lead to loss and accident.

sensor for Aquaculture

Three important indicators affecting aquaculture

Dissolved oxygen: refers to the oxygen content in the water, which is an important factor affecting the results of aquaculture. The dissolved oxygen content varies with temperature, pressure, salinity and other factors..

  • The fish in the water are extremely sensitive to the oxygen content in the water. The dissolved oxygen required for the normal growth and development of the farmed fish is generally above 4-5 mg/L. At this time, the fish have good food intake, fast growth and high feed utilization.
  • When the dissolved oxygen is lower than 2mg/L, the fish basically stop feeding;
  • When the dissolved oxygen is lower than 1mg/L, the fish will float;
  • When the dissolved oxygen is lower than 0.5mg/L, the fish will suffocate and die.

pH value: pH value is a comprehensive indicator reflecting water quality status and an important factor affecting fish activity.

Too high or too low pH value will directly harm fish, cause physiological function disorder, affect their growth or cause other diseases, and even death.In aquaculture ponds, the pH varies greatly, mostly between 7.5 and 9.0. In special cases, it can be lower than 2 or higher than 11.

In acidic water, it will reduce the pH of the blood of fish and shrimp, reducing their oxygen-carrying capacity, so that fish and shrimp will also float in the environment of higher dissolved oxygen, that is, physiological hypoxia. Fish and shrimp do not like activities, their metabolism is slow, their food intake and digestibility decreases, their growth is inhibited, leads to low survival rate.

ORP: ORP is one of the very important water quality indicators. Although it cannot independently reflect the quality of water quality, it can reflect the ecological environment in the aquatic system by integrating other water quality indicators.

Generally, farmers are accustomed to monitoring the concentration of water quality indicators such as NO2, H2S, NH3/NH4+ etc., and think that these substances are the main reasons for the disease of aquatic product. However, these substances are also the result of various biochemical reactions, and their concentration in water is the result of ecological changes in the entire water quality, not the real source.

Since the redox potential determines whether the biochemical reaction can proceed, it is necessary to monitor the redox potential in advance to know whether it is within the normal range, and take appropriate measures in advance to change the redox potential in the sediment and water, thereby affecting the activity of microorganisms. Only by influencing the direction of the chemical reaction and finally making it move in a favorable direction can the production of toxic and harmful substances be truly reduced.

Therefore, ORP is a leading indicator of water quality changes to a certain extent, and can play a good early warning function.

Flexible solutions for greater efficiency and productivity of the future aquaculture

The traditional breeding method is that experienced fishermen judge whether the water quality of the pond is in the best breeding state by observing the floating head of the fish to judge whether there is oxygen deficiency. This method cannot timely and accurately judge the specific conditions of the water quality of the fish pond, which affects the growth of fry to a certain extent, and increases the risk and cost of breeding.

With the continuous development of "Internet of Things" technology, more and more fishermen feel the benefits brought by the new technology. For fishermen, accurate information such as dissolved oxygen, water temperature, pH value, ORP, etc. of aquaculture ponds can be checked in a timely manner on the smart aquaculture system, so as to understand the water quality and reduce the risk of aquaculture.

The intelligent aquaculture equipment platform is mainly an intelligent online water quality monitoring instrument. Through the multi-parameter intelligent water quality detection platform and other Internet of Things equipment, it can control the dynamics of the aquaculture pond and guide the fishermen to improve the quality and output of aquaculture.

The sensor of the terminal can monitor the dissolved oxygen, pH, water temperature, ORP and other environmental indicators in the water in real time, and then transmit the collected data to the display or cloud platform through the collector and the Internet of Things platform, so as to check the water quality of the pond in time through the mobile phone APP to accurately control when to add oxygen and feed, and it is no longer necessary for experienced fishermen to inspect the fish pond every day, and judge whether the fish need to open the aerator by observing the shape of the fish.

MW-O101  dissolved oxygen sensor

MW-O101  dissolved oxygen sensor

As one of the water quality sensor manufacturers and suppliers, Winsen Technology can provide fishermen with dissolved oxygen sensor, pH sensor and ORP sensor for water quality indicator monitoring.

MW-O101 dissolved oxygen sensor, the hot sale model, is an electrochemical sensor with low power consumption, simple maintenance, convenience and practicality.

Agriculture

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It is widely used in ORP value detection in the fields of laboratory scientific research, water supply, wastewater treatment, aquaculture, farmland irrigation, etc. The MW-O101 sensor is a polarographic dissolved oxygen sensor. Under a certain polarization potential of the sensor, the oxygen dissolved in the water body will pass through the oxygen permeable membrane, and a redox reaction will occur on the surface of the working electrode, and the resulting current is proportional to the concentration of dissolved oxygen in the water body. The concentration of dissolved oxygen in water is estimated by measuring the magnitude of the current.

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Electrochemical Ammonia Nitrogen Sensor MW-NH101


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Residual Chlorine Sensor MW-RCl101


MW-RCl101 sensor is a polarographic residual chlorine water quality detection sensor The residual chlorine molecules in the measured solution pass through the selective membrane of the sensor and reach the cathode surface of the electrode. Under the polarization of the polarization potential, the residual chlorine molecules get electrons and are reduced, and the anode loses electrons and is oxidized. At the same time, a current signal is generated, and the magnitude of the signal is proportional to the residual chlorine concentration. The residual chlorine concentration is judged by detecting the magnitude of the current signal during the electrode reaction process.

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ORP Sensor MW-ORP101


MW-ORP101 sensor is a primary battery type ORP water quality detection sensor. The sensor measures the potential difference in the measured solution obtained by the working battery composed of the electrode and the counter electrode. To determine the ORP value of the measured solution use the relation of equality between the ORP value of measured solution and measured potential difference.

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How to choose the right sensor for your project?

We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.

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The first six FAQs. Use the search bar above to reveal more!

Is the Dust Sensor Wired when Shipped?

Laser dust is wired, infrared dust is not wired.

Can the Two Voltages of Mq-7 Exist All the Time, or Do They Need to Be Powered Alternately? if It is an Alternate Power Supply, What is the Appropriate Power Supply Time?

It requires alternate power supply. Please check the information on the product manual. This sensor is powered by 1.5V and 5V alternately. The low temperature and low voltage (1.5V) state can detect CO, and the high voltage (5V) is the desorption process. The recommended 5V voltage duration is 60s, 1.5V voltage duration is 90s to alternately supply power. Since it is a desorption process at 5V, it is normal for the voltage to drop when CO is 150ppm.

What Are the Precautions for Manual Soldering of Semiconductor Sensors?

1. Flux: rosin flux with the least chlorine; 2. Constant temperature soldering iron; 3. Temperature: 250℃; 4. Time: no more than 3 seconds.
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