An illustration of a YSI ODO RTU Optical Dissolved Oxygen Sensor connected to a NexSens X3 Data Logger transmitting data to the cloud, which is shown on the WQData LIVE mobile app (depicted on a phone).

YSI ODO RTU Optical Dissolved Oxygen Sensor X-Series Integration Guide

The YSI ODO RTU Optical Dissolved Oxygen Sensors utilize the most advanced DO measurement technology. It is often used in aquaculture, hydroelectric, and many other monitoring applications. The sensor is compatible with NexSens X-Series data loggers via RS-485 Modbus protocol. Sensor Setup Before the logger can be deployed, it must first be calibrated and set […]

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A NexSens CB-150 LoRaWAN buoy deployed in lower Green Bay, collecting valuable, real-time surface algal pigment, temperature profile, and dissolved oxygen data.

Using Data Buoys to Monitor Southern Green Bay

University of Wisconsin

Green Bay has suffered continuous influxes of pollutants and contaminants from the Fox River due to non-point source runoff in the watershed. Deterioration of the bay’s water quality extends well into the last century, and while cleanup efforts in the bay have been successful overall, continuous monitoring of the bay is important to ecosystem management. […]

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3.3 Dissolved Oxygen

Dissolved oxygen, often abbreviated as DO, is the amount of free oxygen molecules (O2) dissolved in water. Oxygen enters the water through atmospheric diffusion, plant photosynthesis, or aeration (either natural or man-made). DO is typically represented in measurement units as percent of air saturation (%sat) and concentration in milligrams per liter (mg/L) or parts per […]

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Dissolved Oxygen monitoring system deployed near a hydroelectric dam. The system include a NexSens X3 data logger, solar power pack, and a multiparameter water quality sonde.

Dissolved Oxygen Monitoring

The Federal Energy Regulatory Commission (FERC) and other agencies have established dissolved oxygen limits for hydropower facility operations to minimize dam impacts on the local aquatic habitats. NexSens dissolved oxygen systems offer a flexible sensor, data logging, and communications platform to monitor these levels in near real-time.

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