Dissolved Oxygen Sensor With RS485 For Seawater And Freshwater Aquaculture

Dissolved oxygen sensor OPD700 in aquaculture is a device used to monitor the concentration of dissolved oxygen in water. Using the principle of electrochemical sensing, the electrochemical reaction of oxygen on the surface of the electrode is used to measure the content of dissolved oxygen.

The detection of dissolved oxygen sensors in aquaculture is very necessary for aquaculture management. It can ensure the health and growth of aquatic organisms, maintain the ecological balance of water bodies, prevent water hypoxia, and improve aquaculture and economic benefits.

The working principle of the sensor is usually based on the diffusion process of oxygen in water. A sensor usually includes two electrodes, a working electrode and a reference electrode. In the electrochemical reaction, oxygen is reduced to oxygen ions, and a certain current is induced on the electrode surface. This current is proportional to the concentration of dissolved oxygen in the water. By measuring the current on the working electrode, the dissolved oxygen content in the water body can be inferred.

To ensure accurate measurements, dissolved oxygen sensors in aquaculture require regular calibration and maintenance. In addition, factors such as temperature, salinity, and pH in the water body will also affect the performance of the sensor, and corresponding corrections are required.

The sensor can be connected with a data logger or automatic control system to monitor the dissolved oxygen concentration in the water body in real time.

Specification:

Please click the user manual of DO sensor here:

OPD700--Dissolved Oxygen Sensor User Manual.pdf

Brief introduction:

• Adopt optical measurement technology based on Fluorescence principle
• Specially designed for the aquaculture, cost-effective
• No need to calibrate frequently
• Without consuming oxygen, accurate measurement
• All-in-one package, can be used with the online transmitters, DTU, and portable instruments
• RS485 interface, Modbus RTU, support access to standard industrial control system
• The protection grade is IP68, can work continuously and stably under water for a long time
• Internal storage of calibration data, support offline calibration, plug and play on site
• Support handheld devices and in-situ applications

Aplication:
◇ Surface water monitoring
◇ Aquaculture water bodies
◇ Aquarium