New OPD790 dissolved oxygen sensor with temperature, pressure and salinity compensation

Environmental factors that affect the content of dissolved oxygen in water include water temperature, oxygen partial pressure, salinity and other factors. When the partial pressure of oxygen and the salt content are constant, the saturated content of dissolved oxygen gradually decreases with the increase of water temperature. In the case of low temperature, the change of the saturated content of dissolved oxygen with temperature is more significant.

When the water temperature and oxygen partial pressure are constant, the higher the salt content of the water, the lower the saturated content of dissolved oxygen in the water. The salt content of seawater is much higher than that of fresh water. Under the same conditions, dissolved oxygen in seawater The saturation content is much lower than in fresh water. The change range of salt content in natural fresh water is very small, so the salt content has little effect on the saturated content of dissolved oxygen, which can be approximated by the saturated content of pure water.

Since dissolved oxygen is easily affected by factors such as oxygen in the air, temperature, humidity, etc...

Daruifuno OPD790 fluorescent Dissolved Oxygen Sensor, which has the functions of salinity, temperature, and air pressure compensation. Users can use the Modbus protocol to read and set the values.

Application:

surface water, sewage, wastewater, industrial process monitoring, etc.

Features

Sensors based on digital and lightweight design

Easily connect in-line transmitters, DTUs, portable instruments

RS485 digital interface, standard Modbus protocol, support access to standard industrial control system

Protection grade IP68, can work continuously and stably for a long time underwater

Optional cleaning connector, connected to the control system to achieve automatic underwater cleaning

Internal storage of calibration data, support offline calibration, plug and play

Our company focuses on the R&D, production and sales of water quality analysis instruments. Our main products include online pH ORP analyzer, conductivity analyzer, turbidity analyzer, dissolved oxygen analyzer, COD analyzer, ammonia analyzer, etc. If you need water treatment related products, please contact us.