
YSI is your one-stop source for environmental monitoring systems, offering multiparameter instruments and accessories for most unattended monitoring, water quality sampling, profiling and logging applications. As experts in sensor technology, YSI has engineered these units with small probe design and highly accurate sensing for simultaneous monitoring of a wide range of parameters. All YSI 6-Series instruments, except the YSI 600R, use field-replaceable probes. Flash memory prevents data loss while battery power options offer long-term deployment. Both RS-232 and SDI-12 are standard protocols for easy interface with computers and data collection platforms
New Application Notes as pdf Downloads
New Technical Specifications as pdf Downloads
Download the YSI Environmental Monitoring Systems Catalog
Comparison specifications of all 6-Series Sondes
Visit SonTek/YSI for water quantity instrumentation.
Instrument Training Seminar
NEW!
YSI 600LS - Level Sonde
NEW!
YSI 6600 EDS (Extended Deployment System)
The best way to increase deployment times and decrease operational expenses while improving data quality!

THE LEADER IN EXTENDED DEPLOYMENTS!
YSI 650 MDS - Rugged and Reliable Display and Data-Logging System
All YSI 6-Series units interface with the versatile YSI 650 MDS - rugged and reliable display and data-logging system for easy field calibration, logging and data transfer. YSI's EcoWatch™ for Windows™ software enables quick and easy data processing and analysis.
From the fully-capable YSI 6600 sonde to the simple and compact YSI 600R sonde, YSI has a high-technology solution for your application. Check out YSI's Product Application Notes to read about how YSI products work in many different situations! |

chlorophyll dissolved oxygen open-channel flow temperature
velocity conductivity vented level nitrate-nitrogen pH ammonium-nitrogen
ammonia turbidity chloride rhodamine salinity depth ORP
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