Designed for in situ monitoring and profiling, and ideal for long-term deployments requiring the most complete water quality data record.

Have a question about your 6-Series Multiparameter Sondes? Check out the support page with resources compiled just for you.
Need service for your system? Here you’ll find authorized service centers and instructions on how to get the service you need.
We have a large pool of water quality and hydrology instruments available to you for rental.
6820V2 and 6920V2 multiparameter sondes
600OMS V2 Optical Monitoring Sonde
6-Series Multiparameter sondes
Tackling Diffuse Pollution with Catchment Monitoring
River Quality Protected during Tyne Tunnel Construction Project
Catchment Monitoring Network Protects Thames River
Water Intake Monitoring System Provides Reliable Data while Reducing Frequency of Site Visits
YSI HydroSAM provides reliable data whilst reducing on site visits
Imposed Water Quality Conditions with Drought Permits
Thames Water Employs Reservoir Profiler to Reduce Costs
Dubai Municipality Utilizes YSI Real-time Water Quality Monitoring Instrumentation
Extended Deployment Appeals to Users Worldwide
The 6 series instruments measures up to 15 parameters including: pH, ORP, temeprature, conductivity, salinity, depth, dissolved oxygen, turbidity, chlorophyll, and blue-green algae; Additional calculated parameters include total dissolved solids, resistivity, and specific conductance.
Utilize YSI’s new optical sensor design and anti-fouling wiper control for improved reliability during extended deployments.
Find helpful information about water quality monitoring and long-term deployments at YSI's True Cost of Data web site and forum.
| Medium | Fresh, sea or polluted water | |
| Temperature | Operating Storage |
-5 to +50°C -10 to +60°C |
| Communications | RS-232, SDI-12 | |
| Software | EcoWatch® | |
| Dimensions | Diameter Length, no depth Length, with depth Weight |
3.5 in, 8.9 cm 19.6 in, 49.8 cm 21.6 in, 54.9 cm 7 lbs, 3.18 kg (batteries installed, with depth) |
| Power | External Internal |
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