YSI - a Xylem brand  

YSI EXO2 Multiparameter Sonde

The EXO advanced water quality monitoring platform includes the versatile multiparameter EXO2 sonde for oceanographic, estuarine, or surface water applications. Collect data to 250m with the advanced EXO2 sonde – contains six replaceable 'smart' sensors and a central wiper to clean biofouling.

  • Features
  • Specifications
  • Accesssories
  • Documents
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Key Benefits

  • High-accuracy sensors with on-board memory
  • Wireless communications
  • Seamless integration into marine, estuarine, freshwater and ground water monitoring systems

Smart Sondes and Sensors

Extremely versatile instrument, allowing the user to automatically configure a sonde with different sensor for different applications in minutes


Tested in a variety of rigorous field conditions as well as lab conditions to ensure accuracy and response times

Monitor without Interruption

No matter which EXO sensors users select, other features of the sensors' design make them rugged and durable:

  • Wet-mateable connectors resist corrosion
  • Isolated components prevent short circuits
  • Welded housings and double o-rings prevent leaks
  • High-impact plastic and titanium resists breaking
  • Built-in antifouling systems protect data integrity
  • Low power consumption extends underwater deployments
Anti Fouling Central Wiper
Depth / Pressure Rating / Limit 0 to 250 m (0 to 820 ft)
Desktop Software Compatible Yes
Flow Cell Yes
Languages English, Japanese, Chinese, German, Spanish, French
Logging Capabilities Yes
Medium Fresh, sea or polluted water
Memory >1,000,000 logged readings, 512 MB total memory
Monitoring Yes
Multiparameter Yes
Operating Temperature -5 to +50°C
Power 4 Alkaline Batteries
Sampling Yes
Smart Sensors / Ports Yes
Storage Temperature -20 to +80°C
Unit of Measure Parameter Dependent
User Calibratable Yes
Waterproof Yes

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