EXO2 is a Multiparameter Water Quality Sonde with 7 sensor ports (including a central wiper port), optional depth sensor, and battery compartment

EXO Multiparameter Sondes — the best-in-class platform for the highest quality data. EXO’s dynamic range of smart sensors provide comprehensive multiparameter water quality data while SmartQC ensures proper calibrations and top sensor performance. You can be confident in your extended deployments thanks to EXO’s tough materials and unmatched anti-fouling technology.

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The EXO advanced water quality monitoring platform includes the versatile multiparameter EXO2 sonde for oceanographic, estuarine, or surface water applications.

Key Benefits

  • Highest Data Quality
    • Onboard monitoring systems verify sensor operation
  • Multiparameter Monitoring
    • 7 universal ports for allow for any combination of smart sensors or the central wiper
  • Industry-leading Anti-fouling
    • Best-in-class wiper technology
  • Titanium Components
    • The toughest grade parts guarantee operation well into the future
  • Seamless Integration
    • EXO can plug-and-play into marine, estuarine, freshwater, and groundwater monitoring systems


  • Battery compartment & large memory for long-term, unattended deployments
  • All sensors are field-replaceable and hold their own calibration
  • Compatible with real-time data logging systems

Smart Sondes and Sensors

EXO is an extremely versatile instrument for unattended monitoring, allowing the user to automatically configure a sonde with different sensors for different applications in minutes


Smart Sensor Options:

  • Conductivity/Temperature (wiped and non-wiped)
  • Dissolved Oxygen
  • fDOM
  • ISEs (Ammonium, Chloride, and Nitrate)
  • NitraLED (UV Nitrate)
  • pH (guarded and unguarded)
  • pH & ORP (guarded and unguarded)
  • Rhodamine
  • Total Algae (Chlorophyll + Phycocyanin and Phycoerythrin)
  • Turbidity

Other Available Parameters

  • Absolute Pressure
  • Ammonia
  • Depth
  • DO% Local
  • Guage Pressure
  • nLF Conductivity
  • PAR
  • Resistivity
  • Salinity
  • Specific Conductivity
  • Total Dissolved Solids
  • Total Suspended Solids
  • Water Density


EXO sondes and sensors are 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 smart sensor 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 anti-fouling systems protect data integrity
  • Low power consumption extends underwater deployments