The LoRa dissolved oxygen sensor is a commonly used sensor for water quality detection

 Dissolved oxygen is the amount of oxygen dissolved in a given amount of water at a given temperature and atmospheric pressure. Therefore, it should not be confused with oxygen in water molecules. It is usually expressed as 1 / millionth of the concentration or mg / l. It can also be expressed as percent saturation, where saturation is the maximum amount of oxygen that can theoretically be dissolved in water at a given height and temperature.

 Dissolved oxygen sensor is a new type of integrated sensor, which can obtain the value of dissolved oxygen in the environment of the device by collecting the device. It can be widely used in environmental monitoring, aquaculture, sewage treatment, industrial production and other environments. Compared with the traditional Internet of Things sensors, it has the advantages of high accuracy and easy to install. At present, the main methods of measuring dissolved oxygen content in water environment include: colorimetric method, iodine measurement method, conductivity method, electrode method and so on. Electrode method, also known as sensor method, has been widely used in recent years because of its easy on-line monitoring and high detection sensitivity.

The LoRa water quality DO sensor is a device that measures the concentration of dissolved oxygen in a solution using the principle of fluorescence measurement. It does not consume oxygen and requires no electrolytes. Built-in temperature transmitter, with automatic temperature compensation function. The calibration function provides a simpler and more convenient calibration method. The use of imported high-quality fluorescent film can be widely used in water treatment, aquaculture and environmental monitoring industries. Support for LoRa TDMA networking and the standard LoRaWAN protocol.