EXO NitraLED UV Nitrate Sensor

Changing Nutrient Monitoring Forever

EXO NitraLED is the world’s most accessible UV Nitrate sensor, built with state-of-the-art LED technology, for long-term nutrient monitoring. With seamless integration into any EXO Sonde, this sensor simplifies and reduces the cost of unattended nitrate monitoring for point and non-point source pollution in freshwater environments.

Nitrate Sensor

Optical vs. ISE

Ion Selective Electrodes are susceptible to significant drift over short periods of time making frequent calibration essential for reliable data. Daily calibration is not practical for unattended deployments. Optical sensors are much more suitable for in situ monitoring as they remain stable over several weeks. Additionally, these sensor feature improved accuracy and resolution over ISEs.

Powerful Technology

EXO NitraLED employs two UV LEDs for measuring nitrate + nitrite absorbance while compensating for interference from natural organic matter. The absorbance is proportional to the concentration of Nitrate as Nitrogen. The EXO Turbidity Sensor is used for real-time turbidity compensation.

Additional Water Quality Sensors

EXO’s multiple sensor ports allow users to supplement nitrate data with additional water quality parameters. This enables a broader analysis of environmental conditions and impacts. EXO NitraLED provides a more comprehensive understanding of water conditions leading to more informed decision making.

Nutrient Monitoring

LED vs. Lamp

Competing UV Nitrate sensors utilize xenon or deuterium lamps which suffer from high power requirements, and are bulky and expensive. These are basically laboratory spectrophotometers that have been retrofitted for field applications. EXO NitraLED is purpose-built for outdoor freshwater monitoring, which enables more efficient operation and mitigates shortcomings associated with lamp-based sensors.

Fits in the Palm of Your Hand

With recent advances in UV-LED technology, YSI has produced an optical Nitrate sensor in a compact form-factor that fits in the palm of your hand. This enables the sensor to fit in the existing EXO bulkhead without need for any modification. All EXO probe guards and flow cells still work with EXO NitraLED.

Easy Deployments

With reduced power consumption, the sensor runs off of the EXO Sonde’s user-replaceable batteries. The sonde includes built-in memory for internal logging which allows for simple, autonomous deployments without the cost and burden of external hardware. No new infrastructure required.

User Calibration

EXO NitraLED gives users the ability to calibrate when needed. Kor Software allows for simple 2-point calibration with stability indicators and helpful tips. A calibration report is automatically generated at the end for record keeping.

Nitrate Monitoring

A Revolution in Nitrate Monitoring

Existing nitrate monitors are expensive. With increasing cases of HABs and hypoxia, users need lower cost and higher volume water monitoring solutions. Wide area coverage is key for detecting and mitigating pollution at the source. With EXO NitraLED, you can have cost-effective nitrate monitoring practically anywhere you have an EXO Sonde.

Intuitive Interface

EXO NitraLED uses the same Kor Software and accessories as the EXO Sonde; no need to learn a new interface. If you are new to EXO, Kor Software is a simple interface for efficient setup and operation. SmartQC indicators provide peace of mind before deployments.

Extended Deployments

The EXO Central Wiper combined with the new NitraLED Wiper Brush protects all the sensors from fouling and ensures data integrity over long deployment intervals. A unique arm extension with dual-bristle design wipes smoothly through the nitrate sensing window, keeping a clean sample path and reducing the number of trips to the field.

Affordable

With a smaller form-factor comes a smaller price. The use of UV LEDs, rather than a full lamp, saves on component and production costs, enabling YSI to pass along these savings to you . With a lower power draw, smaller form-factor, and lower price, EXO NitraLED is a fraction of the cost of other UV Nitrate monitors on the market.

Nitrate Monitoring

Required Products

EXO NitraLED is compatible with all other EXO Smart Sensors and accessories. Along with those existing components, we have released two new accessories to help with long-term monitoring - the Sensor Alignment Ring that holds sensors together tightly and the dual-bristle Wiper Brush specifically designed for the NitraLED sensing window. Read about the 5 things you'll need for continuous nitrate monitoring.

Here are some items you’ll need for monitoring nitrate with EXO NitraLED:

EXO NitraLED UV Nitrate Sensor

EXO NitraLED UV Nitrate Sensor for Freshwater Environments)

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EXO2 Multiparameter Sonde

Multiparameter Water Quality Sonde with 7 sensor ports (including a central wiper port)

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EXO3 Multiparameter Sonde

Multiparameter Water Quality Sonde with 5 sensor ports (including a central wiper port)

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EXO1 Multiparameter Sonde

Multiparameter Water Quality Sonde with 4 sensor ports

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Frequently Asked Questions

Have a question about the EXO NitraLED Sensor? We have answers! Check out our Frequently Asked Questions (FAQ) page to learn more about the sensor technology, different monitoring applications, and its maintenance and service requirements.