
YSI EXO3 Multi-Parameter Water Quality Sonde
EXO3 is a purpose-built sonde for monitoring major water quality parameters, including: pH, conductivity, temperature, turbidity, and dissolved oxygen.
Features
- Titanium sensors with wet-mateable, universal sensor ports
- Biofouling protection with central wiper brush and copper-alloy accessories
- Integral SDI-12 communications make it ideal for data collection platforms
Connect in Real-Time
Connect NexSens-affiliated sensors to any X-Series Data Logger to enable real-time monitoring through the WQData LIVE app. NexSens X-Series Loggers transmit sensor data to the cloud, enabling real-time data on any mobile device.
Contact an Applications Scientist
Need help designing an Environmental IoT system? NexSens applications scientists will help you design the perfect monitoring system to meet field conditions and monitoring needs.
Systems
Learn more about environmental system and equipment applications on the NexSens System database.
Documents
Case Studies

Water Quality and Flow Monitoring
The University of Akron Field Station is located on the 411-acre Bath Nature Preserve in northeastern Ohio. It promotes a better understanding of our relationship with the natural environment through research, education, and service.

The Tom Ridge Environmental Center is located at the entrance to Presque Isle State Park in Erie, Penn. TREC is open year-round, offering visitors insight to what they can expect at Presque Isle State Park and the surrounding Great Lakes Region. TREC also serves as a center for research, contributing to conservation efforts, promoting environmental awareness, and helping to preserve the unparalleled beauty of Presque Isle.

Coral Reef Early Warning System (CREWS)
Corals around the world are under threat. The buoys of the Coral Reef Early Warning System (CREWS) help face that threat, providing the entire world with weather patterns and data about climate change from their home in the Caribbean Sea.