Environmental Monitoring Systems (EMS)
Multi-parameter Water Quality Sondes
  • Sampling, Logging& Profiling

Integrated Systems & Services (ISS)
Environmental Monitoring Modules
  • Buoy& Floating Platforms, Profiling Systems, EcoMapper AUV

Multiparameter Sondes

6600V2 Sonde


Make the most of your environmental monitoring.

The YSI 6600 V2 data sonde is the most comprehensive water quality monitoring equipment available with simultaneous measurement of conductivity (salinity), temperature, depth or level, pH/ORP plus...


The 6600 V2-4 also measures these parameters: dissolved oxygen, turbidity, chlorophyll, and blue-green algae; the V2-2 measures two of the four parameters simultaneously. 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.

  • Self-cleaning optical sensors with integrated wipers remove biofouling and maintain high data accuracy
  • Field-replaceable sensors make trips to the field quick
  • Optimal power management and built-in battery compartment extends in situ monitoring periods for real-time turbidity monitoring, dissolved oxygen monitoring, algae monitoring, and more.


Take Advantage of YSI’s New Optical Sensors
In addition to Turbidity, Chlorophyll, and Rhodamine, YSI offers these optical sensors:

ROX Reliable Optical Dissolved Oxygen
The ROX sensor uses lifetime luminescence detection technology to offer the most reliable oxygen sensor with the lowest possible maintenance effort. The sensor is insensitive to hydrogen sulfide
interference and does not require regular membrane changes.

Blue-Green Algae (BGA)
YSI’s fluorescence-based blue-green algae sensors will allow you to monitor blue-green algae populations where their presence is a concern. Whether providing an early warning to an algal bloom, tracking taste and odor-causing species in drinking water supplies, or conducting ecosystem research, YSI BGA sensors will provide sensitive and reliable in situ data.

Sensor performance verified*
The 6600 V2 sonde uses sensor technology that was verified through the US EPA’s Environmental Technology Verification Program (ETV).

6600 Upgrades Available
YSI is committed to offering our customers reliable and cost-effective water monitoring solutions. To this end, we are offering V2 Upgrades for existing 6600s. Upgrades will include the new 6600 V2 bulkhead, a ROX Optical Dissolved Oxygen Sensor, and firmware/software upgrades. In addition, the sonde will be fully tested and calibrated by an experienced service technician.

Two versions are available:

The 6600 V2-4 with and the 6600 V2-2 with
  • 4 optical ports
  • Conductivity/temperature port
  • pH or pH/ORP port
    (NEW wiped sensor available)
  • Two optical ports
  • Conductivity/temperature port
  • Rapid Pulse DO port
  • pH or pH/ORP port
  • 3 ISE ports


Medium Fresh, sea or polluted water
Temperature Operating
-5 to +50°C
-10 to +60°C
Communications RS-232, SDI-12
Software EcoWatch®
Dimensions Diameter
Length, no depth
Length, with depth
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
12 V DC
8 C-size alkaline batteries


CE, EU Battery Compliance, FCC, IP-67, WEEE, and MCERTS
Assembled in the USA

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