EXO Breaks the Sonde Barrier

• YSI has used its long experience in water-quality monitoring to develop the ultimate multiparameter sondes for challenging marine and freshwater conditions.
• Users can choose the new EXO1 sonde, with ports for four sensors, or the new EXO2 sonde, with six ports and a central anti-fouling wiper.
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• Parameters include: temperature, conductivity, depth, dissolved oxygen, pH, ORP, total algae (blue-green algae and chlorophyll), turbidity, and fDOM, plus four calculated parameters.
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• Key Benefits
• -CTD plus 3-5 additional sensors in one small package;
• -High-accuracy sensors with on-board memory;
• -Wireless communications; and
• -Seamless integration into marine, estuarine, freshwater and ground water monitoring systems.
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• Smart Sondes and Sensors
• “EXO was designed to be extremely versatile, allowing the user to configure a sonde for different applications in minutes. The key to this versatility is the smart sensors and smart ports,” explains Rob Ellison, YSI director of R&D. “Each smart port is identical and automatically recognizes any EXO sensor so sensor payloads are designed by the user.”
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• 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.

For long-term monitoring programs, the data collected by EXO sensors are compatible with historic data from YSI 6-Series sensors, helping users to maintain a consistent record of measurements.

• Accuracy
• EXO sensors and sondes are tested in a variety of rigorous field conditions as well as lab conditions to ensure accuracy and response times.
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• “With YSI's focus on building monitoring systems for natural environments, our sensor specifications are based on the entire range of environmental extremes that a system could encounter in nature. Sensors have fast response times for profiling and sampling and a depth rating of 250 meters,” notes EXO Product Manager Tim Finegan.
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• Also, a new metrology system specifically for EXO offers improved accuracy of conductivity and temperature sensors to better address oceanographic challenges.
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• Applications
• -Long-term continuous monitoring;
• -Vertical profiling;
• -Underway monitoring;
• -Integration into remote monitoring platforms;
• -Source Water monitoring;
• -Ground Water monitoring;
• -Stormwater monitoring;
• -Dredging;
• -Spot sampling; and
• -Stand-alone sensors.
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• Accessories
• -Enhanced KOR interface software;
• -Handheld display; and
• -Multiple data output options, including DCP, USB, and Bluetooth wireless communication.
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Source: YSI