EXO Nitrate Smart Sensor

EXO Multiparameter Sondes

EXO advanced water quality monitoring platform for continuous field water quality measurements in challenging conditions.

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Shallow Freshwater Only

This sensor must be installed into an EXO Sonde to function. Does not function on its own.

  • Overview

    The EXO guarded Nitrate ISE sensor is a digital smart sensor featuring welded titanium construction and wet-mateable connectors. Complete calibration in less than 15 minutes using EXO's suite of smart sensors and intuitive KOR interface software.

    Note: Intended for sampling applications. Not for use in an EXO2 system with a central wiper installed.

    • Measures NO3 in freshwater applications
    • Depths not to exceed 17 meters (55 ft) or 25 psi
    • 3 month warranty on sensing module

    Compact and Accurate
    The EXO platform offers a completely new approach - highly accurate, quick-response sensors in a small, easy-to-deploy and easy-to-maintain package. Gone are large and complicated sensor arrangements requiring complex integration.

    Smart Probes
    All EXO sensors have onboard memory and processing, allowing users to easily calibrate and configure sensors at one location and distribute to various field sites.

    Smart Ports
    Wet-mateable connectors allow for swaps in wet conditions, while the smart ports shut down any excessive current draws to prevent damage.

    For more information about the EXO platform please visit EXOwater.com

  • Specifications
    Connector Yes
    Depth / Pressure Rating / Limit 17 meters
    Desktop Software Compatible Yes
    Digital / Digital Sensors Yes
    Equipment used with EXO1, EXO2
    Measurement Range

    0 to 200 mg/L-N (0-30°C)

    Medium Fresh water
    Operating Temperature 0 to 30°C
    Parameters Measured Nitrate
    Precision ±10% of reading or 2 mg/L-N, w.i.g.
    Response Time T63<30 sec
    Sampling Yes
    Storage Temperature 0 to 30°C
    Unit of Measure millivolts, mg/L-N
    User Calibratable Yes

    3 Months - Replaceable ISE reagent module

    2 Years - Electronics base

    Waterproof Yes
  • Video

    EXO Sondes: Smart Ports - Smart Sensors

    In this demonstration, Tim Finegan (YSI Director of Environmental Monitoring) demonstrates the smart sensor technology of the EXO water quality sondes.

    EXO Sensor Replaceable Reagent Module

    In this video you will discover one of the many smart features of the EXO advanced water quality monitoring platform, designed to save you money and time. The EXO pH, ORP, ammonium, chloride and nitrate sensors come with replaceable reagent modules. The exhaustible reagents are stored in a module at the top of the sensor. The electronics and sensor data are stored separately in a smart base. When the reagents are used up, you can easily remove the top of the sensor and plug in a new reagent module. Cost savings over 5 years is approximately 500 dollars.

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Enhanced interface for the EXO platform.

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EXO1 Multiparameter Sonde

4-port Multiparameter Water Quality Sonde

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Nitrate Standard

Nitrate Standard


EXO Nitrate Sensor Replacement Module

Shallow Freshwater Only

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