LELab Sdn Bhd
18, Jalan Sungai Burung U32/U,
Seksyen 32, Bukit Rimau,
40460 Shah Alam,
Selangor Darul Ehsan, Malaysia.
+603-5525 3833
+603-5525 3832

Multiparameter Sondes (EMS)

YSI EXO1 Multiparameter Sonde

Multiparameter Water Quality Sonde with 4 sensor ports, 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.

Instrument Only. Cables, probes/sensors, and accessories sold separately.
 

The EXO advanced water quality monitoring platform includes the versatile multiparameter EXO1 sonde for estuarine, surface water, or ground water applications.

Key Benefits

exo multiparameter sonde data datasonde


Highest Data Quality
Onboard monitoring systems verify sensor operation


Multiparameter Monitoring
4 universal ports for allow for any combination of smart sensors

exo anti-fouling antifouling


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

 

Smart Sondes and Sensors
EXO is an extremely versatile instrument, allowing the user to automatically configure a sonde with different sensors for different applications in minutes

Smart Sensor Options:
• Conductivity/Temperature
• Dissolved Oxygen
• fDOM
• ISEs (AmmoniumChloride, and 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

Accuracy
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

Monitoring Made Mobile
EXO makes it easy to view data in the field. The EXO Handheld offers a dedicated, streamlined interface to EXO sondes. EXO GO uses Bluetooth to connect any Windows OS device to a submerged EXO sonde.

Other EXO Sonde Options
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment


EXO-Factory-Service-Icon.png
Add an EXO Factory Service Plan to your next sonde purchase and have the peace of mind that your new instrument is covered. Use today’s budget to protect your investment for years to come!

 


YSI Integrated Systems


The EXO sondes are a key component of a complete, unattended long-term water quality monitoring system from our Integrated Systems & Services group.
 


EXO University


Learning a new water quality platform can be a challenging process. Accelerate through the learning curve with our on-demand training program. Join us at YSI University!


Kor Software

 


KorEXO Software is an accessible, feature-rich platform for managing EXO instrumentation and water quality data. Easily calibrate sensors, setup long-term deployments, and ensure equipment is operating at peak performance!

YSI EXO2 Multiparameter Sonde

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.

Instrument Only. Cables, probes/sensors, and accessories sold separately.
 

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

Key Benefits

exo multiparameter sonde data datasonde


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

exo anti-fouling antifouling


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

 

Smart Sondes and Sensors
EXO is an extremely versatile instrument, 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 (AmmoniumChloride, and 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

Accuracy
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

Monitoring Made Mobile
EXO makes it easy to view data in the field. The EXO Handheld offers a dedicated, streamlined interface to EXO sondes. EXO GO uses Bluetooth to connect any Windows OS device to a submerged EXO sonde.

Other EXO Sonde Options
• EXO1 sonde has 4 ports and a smaller diameter
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment


EXO-Factory-Service-Icon.png
Add an EXO Factory Service Plan to your next sonde purchase and have the peace of mind that your new instrument is covered. Use today’s budget to protect your investment for years to come!

 


YSI Integrated Systems


The EXO sondes are a key component of a complete, unattended long-term water quality monitoring system from our Integrated Systems & Services group.
 


EXO University


Learning a new water quality platform can be a challenging process. Accelerate through the learning curve with our on-demand training program. Join us at YSI University!


Kor Software

 


KorEXO Software is an accessible, feature-rich platform for managing EXO instrumentation and water quality data. Easily calibrate sensors, setup long-term deployments, and ensure equipment is operating at peak performance!

YSI EXO2s Customized Multiparameter Sonde

Customized Multiparameter Water Quality Sonde with 7 sensor ports (including a central wiper port), optional depth sensor, no 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.

This is the EXO2s conversion service only.
EXO2 sonde, cables, probes/sensors, and accessories sold separately.

 

Go more places with the EXO2s sonde!

The more maneuverable monitoring platform.
 

We have heard from customers who need the payload and capabilities of YSI’s best-in-class EXO2 sonde, but in spaces and places that can’t accommodate the EXO2. EXO2s is a customized, batteryless sonde that comes with the same warranty and capabilities as the EXO2, and is ideal for specialized applications such as:

• Attachment to an AUV or aerial drone
• Integration with a buoy
• Horizontal profiling where light weight is optimal

Key Benefits

exo multiparameter sonde data datasonde


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

exo anti-fouling antifouling


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

 

Discover how less size can bring more value
to your science with the following benefits:

Maintenance Special
Take off the strain, with a
30% reduction in weight.

 YSI Integrated Systems
Go new places, with a
33% reduction in length.​

YSI Integrated Systems
Explore your environment,
with AUV's or drones.

EXO University
Expand your integrated system,
and maximize your limited space.

EXO University
Lose the Alkalines,
and save on maintenance.

 

Smart Sondes and Sensors
EXO is an extremely versatile instrument, 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 (AmmoniumChloride, and 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

Accuracy
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

Other EXO Sonde Options
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform  
• EXO3 sonde has 5 ports for a lower cost option using the central wiper

 


 

EXO-Factory-Service-Icon.pngAdd an EXO Factory Service Plan to your next sonde purchase and have the peace of mind that your new instrument is covered. Use today’s budget to protect your investment for years to come!

 


YSI Integrated Systems


The EXO sondes are a key component of a complete, unattended long-term water quality monitoring system from our Integrated Systems & Services group.
 


EXO University


Learning a new water quality platform can be a challenging process. Accelerate through the learning curve with our on-demand training program. Join us at YSI University!


Kor Software

 


KorEXO Software is an accessible, feature-rich platform for managing EXO instrumentation and water quality data. Easily calibrate sensors, setup long-term deployments, and ensure equipment is operating at peak performance!

YSI EXO3 Multiparameter Sonde

Multiparameter Water Quality Sonde with 5 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.

Instrument Only. Cables, probes/sensors, and accessories sold separately.
 

EXO3-Product-Page-Banner.jpg

The parameters you need, without the features you don't!

Offering the greatest value of any sonde available on the market, EXO3 combines the maneuverability of the EXO1 with the powerful antifouling wiper of the EXO2.


EXO3 is a purpose-built sonde for monitoring major water quality parameters, including: pH, conductivity, temperature, turbidity, and dissolved oxygen.

Key Benefits

exo multiparameter sonde data datasonde


Highest Data Quality
Onboard monitoring systems verify sensor operation


Multiparameter Monitoring
5 universal ports for allow for any combination of smart sensors or the central wiper

exo anti-fouling antifouling


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

 

Additional Benefits Only from EXO3

Maintenance Special
The best priced, highest-quality sonde for
baseline water quality monitoring.


Flexibility to switch from continuous monitoring to
spot sampling with a lighter, shorter form factor.

YSI Integrated Systems
Integral SDI-12 communications makes it ideal for existing data collection 
platforms and installations. (Including replacement of 6-Series sondes.)

 

Smart Sondes and Sensors
EXO is an extremely versatile instrument, 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 (AmmoniumChloride, and 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

Accuracy
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

Monitoring Made Mobile
EXO makes it easy to view data in the field. The EXO Handheld offers a dedicated, streamlined interface to EXO sondes. EXO GO uses Bluetooth to connect any Windows OS device to a submerged EXO sonde.

Other EXO Sonde Options
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment


EXO-Factory-Service-Icon.png
Add an EXO Factory Service Plan to your next sonde purchase and have the peace of mind that your new instrument is covered. Use today’s budget to protect your investment for years to come!

 


YSI Integrated Systems


The EXO sondes are a key component of a complete, unattended long-term water quality monitoring system from our Integrated Systems & Services group.
 


EXO University


Learning a new water quality platform can be a challenging process. Accelerate through the learning curve with our on-demand training program. Join us at YSI University!


Kor Software

 


KorEXO Software is an accessible, feature-rich platform for managing EXO instrumentation and water quality data. Easily calibrate sensors, setup long-term deployments, and ensure equipment is operating at peak performance!

YSI EXO GO

Monitoring Made Mobile.

EXO GO wireless communication device uses Bluetooth to connect any Windows OS device to a submerged EXO Sonde.

NOTICE: Pending certifications for Brazil, China, Mexico and South Korea. Shipping to these countries currently unavailable.
 

EXOGO-Banner-Image.jpg

EXO GO opens a Bluetooth®  portal between any Windows OS device and a submerged EXO Sonde.


The portability of EXO GO frees up your hands in the field. On-the-spot GPS coordinates and barometric pressure are viewed through the newest KorEXO Software running on both laptops and tablets. The device is IP-67 rated and highly ruggedized to withstand drops, drips, and dunks!

Improve your workflow with EXO GO:

Maintenance Special
Keep your sonde in the water while you view your data in real-time,
download files, or adjust deployment settings on the GO!

 YSI Integrated Systems
Bring the full power of KorEXO to your site
with any Windows OS portable device!

YSI Integrated Systems
Do more sampling with our long-lasting,
rechargeable battery - lasts for up to 15 hours!

 

 

EXO Sonde Options
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO Handheld Display

Enhanced interface for calibrating and data logging with the EXO platform.


The EXO Handheld offers convenient monitoring with a dedicated, streamlined interface to EXO Sondes. The ultra-rugged handheld features a backlit color display, ergonomic design, and simple operation.
 

The EXO Handheld from YSI is designed and engineered as a dedicated interface to EXO sondes. Log real-time data, calibrate sensors, set up sondes for deployment, and transfer water quality data to a PC with this feature-packed device. Designed for reliable field use in challenging environmental conditions, this display features a waterproof IP-67, impact-resistant case and wet-mate connector.

Discover the benefits of the EXO Handheld:

HH_Icon_Feather.png


Lighten the load for long trips into the field with an ergonomic device that feels at ease in your hand while sampling and profiling

HH_Icon_Mind.png


Lower the learning curve of collecting high-quality data with a simplified user interface and integrated help screens

HH_Icon_Thumbs_Up.png


Keep your sensors performing at their best with automatic calibration reminders based on your standard operating procedures

HH_Icon_GPS.png


Build a georeferenced data set using GPS and site tagging functionality for up to 100 locations
 

HH_Icon_Transfer.png


Quickly transfer collected data sets and calibration records to a USB flash drive with the push of a button

HH_Icon_Battery.png


Eliminate the need for alkaline batteries and sample for longer than ever with a powerful rechargeable Li-Ion battery

 

EXO Sonde Options
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI 600OMS V2 Optical Monitoring Sonde

Single-Parameter, Low-Cost Optical Monitoring System

Measure optical dissolved oxygen, chlorophyll, blue-green algae, rhodamine, or turbidity in combination with temperature, conductivity and depth.

Instrument only. Cables, probes/sensors, and accessories sold separately.

6Series-Pages-EXO-Banner.jpg

 6-Series sondes are going away. Read about the discontinuation at  YSI.com/6-series
 
 
Designed for use in fresh, sea or polluted waters, the 600OMS V2 utilizes the field-proven YSI sensors and incorporates innovations in sensor configuration such as a conductivity and temperature module that fits into the sonde body.

Parameters available for the 600OMS V2 include:

  • Temperature
  • Conductivity
  • Salinity
  • Specific Conductance
  • Depth
  • TDS
  • Shallow Vented Level
  • Optical Dissolved Oxygen, Blue-green Algae, Turbidity, Chlorophyll or Rhodamine

The 600OMS V2 is available with or without internal power. Its small size is perfect for applications such as turbidity or oxygen monitoring.

Features:

  • Fits down 2-inch wells
  • Easily connects to data collection platforms
  • Compatible with the YSI 650 MDS
  • Wiped optics prevent biofouling​

YSI EXO Wiped Conductivity & Temperature Sensor

EXO Wiped Conductivity & Temperature Digital Smart Sensor

Note: This product is intended for long-term monitoring applications in fouling environments.
This sensor must be installed into an EXO Sonde with central wiper to function. Does not function on its own.


For sampling and profiling applications, please see our standard (C/T) sensor.
 

In long-term water quality monitoring, biofouling is public enemy number one.

Biofilms, barnacles, and algal growth are common culprits of poor data quality, clogging up conductivity cells and coating sensor optics. While EXO2’s Central Wiper can mechanically remove biofouling from other sensors to maintain data integrity over long deployment periods, the anatomy of a standard conductivity & temperature sensor makes this anti-fouling technique ineffective...until now.  

Introducing the EXO Wiped Conductivity & Temperature sensor from YSI, designed with and engineered for compatibility with EXO’s Central Wiper

Discover the benefits of Wiped (C/T):

YSI Integrated Systems


Save money by reducing the number of site visits each year. Pays for itself in under a year depending on application. 
 

EXO University


Lower the cleaning & maintenance requirements for conductivity sensors, and spend less time with anti-fouling screens and removing the build-up of hard growth.

Maintenance Special


Improve the reliability of your conductivity sensor, now with non-metallic electrodes. Leverage the flexible, plug-and-play sensor architecture of an existing EXO2 or EXO3 sonde with this user upgradeable solution. 

YSI Integrated Systems


Improve the representativeness of your conductivity data by avoiding stagnant readings and reducing the impact of micro-environments.
 

EXO University


Reduce the need for post-processing data and spend less time manually adjusting for fouling-related sensor drift.
 

Maintenance Special


Prevent common types of fouling from impacting your valuable data, including; particulates, algae, barnacles, and trapped gasses.

 

The EXO Conductivity & Temperature Sensor is a digital smart sensor featuring welded titanium construction and wet-mateable connectors. A new metrology system specifically for EXO offers improved range of conductivity and increased accuracy of temperature sensors to better address oceanographic challenges. This combination sensor provides measurements for water temperature and conductivity as well as calculated parameters like specific conductivity, salinity, resistivity, and total dissolved solids (TDS).

  • 0 to 100 mS/cm measurement range
  • ±0.01°C (-5 to 35°C) 

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO NitraLED UV Nitrate Sensor

EXO NitraLED UV Nitrate Sensor for Freshwater Environments


608090 EXO NitraLED Kit includes necessary Alignment Ring and Wiper Brush for EXO2 and EXO3 installations.

608040 EXO NitraLED Sensor includes only the sensor for use in EXO1 sampling applications.

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

Utilizing state-of-the-art UV LED technology, EXO NitraLED™ is an optical nitrate sensor designed for long-term, low-drift monitoring. Built-in corrections for Natural Organic Matter (NOM) and Turbidity minimize interference in freshwater environments. Its compact form factor allows for seamless integration with any EXO Sonde.

LIGHT UP YOUR MONITORING! 
Expand and enhance your water quality monitoring program with UV Nitrate for more informed decision making.

 

LIGHTEN YOUR BUDGET!
The world’s most accessible monitoring solution for nitrate, at a fraction of the cost of lamp-based monitors.

 

LIGHTEN YOUR LOAD!
Fits in the palm of your hand—and integrates directly into any EXO Sonde. No external hardware required!

 

Nitrate Sensor

Learn more about EXO NitraLED

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO pH & ORP Smart Sensor

EXO pH & ORP Digital Smart Sensor (Unguarded)

For the guarded version, please see our EXO pH & ORP Smart Sensor (Guarded)

Note: This product is intended for sampling and profiling applications.
This sensor must be installed into an EXO Sonde to function. Does not function on its own.

The EXO unguarded pH & ORP 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 Software.

Note: This unguarded model is for use with the EXO2 or EXO3 with a central wiper installed. For the guarded version, please see our EXO pH & ORP Smart Sensor (Guarded).

  • 0 to 14 unit measurement range
  • T63<3 sec response time for pH, T63<5 response time for ORP
  • ±0.1 pH unit accuracy within ±10°C of calibration temperature
  • ±20 mV ORP unit accuracy in Redox standard solutions

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO Optical Dissolved Oxygen Smart Sensor

EXO Optical Dissolved Oxygen Digital Smart Sensor


Note: This product is intended for sampling and profiling applications.
This sensor must be installed into an EXO Sonde to function. Does not function on its own.

The EXO Optical Dissolved Oxygen 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 Software. This sensor provides optical dissolved oxygen measurements as well as DO %.

  • 0 to 50 mg/L measurement range
  • T63<5 sec response time
  • ±0.1 mg/L or 1% of reading accuracy from 0 to 20 mg/L

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment



 

YSI EXO Turbidity Smart Sensor

EXO Turbidity Digital Smart Sensor


Note: This product is intended for sampling and profiling applications.
This sensor must be installed into an EXO Sonde to function. Does not function on its own.


The EXO Turbidity 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 Software.

  • 0 to 4000 FNU measurement range
  • T63<2 sec response time
  • 0.3 FNU or ±2% of reading accuracy from 0 to 999 FNU

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO Central Wiper

Anti-fouling Wiper for the EXO Sondes


For use with the EXO2 and EXO3 platforms only. Does not function on its own.
 

Monitor without interruption and reduce biofouling.

The EXO Central Wiper occupies the central port on an EXO2 or EXO3 sonde, and is used to keep the payload sensor faces clean during long-term deployments. There's no escaping biofouling in underwater measurements. To keep it from interfering with data, an EXO2 or EXO3 sonde can be equipped with this anti-fouling wiper to prolong deployments and improve data accuracy.

Benefits of our best-in-class wiper:

YSI Integrated Systems


Save money by reducing the number of site visits each year. Be more confident in long-term deployments.. 
 

EXO University


Lower the cleaning & maintenance requirements for water quality sensors, and spend less time with anti-fouling screens and removing the build-up of hard growth.

Maintenance Special


Improve the reliability of your sensors. Leverage the flexible, plug-and-play sensor architecture of an existing EXO2 or EXO3 sonde with this user upgradeable solution. 

EXO University


Reduce the need for post-processing data and spend less time manually adjusting for fouling-related sensor drift.
 

Maintenance Special


Prevent common types of fouling from impacting your valuable data, including; particulates, algae, barnacles, and trapped gasses.

 

The EXO Central Wiper features welded titanium construction and wet-mateable connectors.

YSI EXO Conductivity & Temperature Smart Sensor

EXO Conductivity & Temperature Digital Smart Sensor

Note: This product is intended for sampling and profiling applications.
This sensor must be installed into an EXO Sonde to function. Does not function on its own.

The EXO Conductivity & Temperature Sensor is a digital smart sensor featuring welded titanium construction and wet-mateable connectors. A new metrology system specifically for EXO offers improved range of conductivity and increased accuracy of temperature sensors to better address oceanographic challenges. This combination sensor provides measurements for water temperature and conductivity as well as calculated parameters like specific conductivity, salinity, resistivity, and total dissolved solids (TDS).

  • 0 to 200 mS/cm measurement range
  • T63<2 sec response time
  • ±0.5% of reading or 0.001 mS/cm accuracy from 0 to 100

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

 

YSI EXO pH Smart Sensor (Guarded)

EXO pH Digital Smart Sensor (Guarded)


Note: This product is intended for sampling and profiling applications.
This sensor must be installed into an EXO Sonde to function. Does not function on its own.

The EXO guarded pH 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 Software.

Note: This guarded model is for sampling applications, not for use in an EXO2 or EXO3 system with a central wiper installed. For unguarded version, please see our EXO pH Smart Sensor.

  • 0 to 14 unit measurement range
  • T63<3 sec response time
  • ±0.1 pH unit accuracy within ±10°C of calibration temperature

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO pH Smart Sensor (Unguarded)

EXO pH Digital Smart Sensor (Unguarded)

Note: This product is intended for sampling and profiling applications.
This sensor must be installed into an EXO Sonde to function. Does not function on its own.

The EXO unguarded pH 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 Software.

Note: This unguarded model is for use with the EXO2 or EXO3 with a central wiper installed. For the guarded version, please see our EXO pH Smart Sensor (Guarded).

  • 0 to 14 unit measurement range
  • T63<3 sec response time
  • ±0.1 pH unit accuracy within ±10°C of calibration temperature

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

 

YSI EXO Total Algae PC Smart Sensor

EXO Total Algae Phycocyanin Digital Smart Sensor - Freshwater

For Phycoerythrin (Saltwater) version, please see our EXO TAL-PE Smart Sensor.

Note: This product is intended for sampling and profiling applications.
This sensor must be installed into an EXO Sonde to function. Does not function on its own.


The EXO Total Algae PC Sensor is a digital smart sensor (chlorophyll & phycocyanin) featuring welded titanium construction and wet-mateable connectors optimized for freshwater use. Complete calibration in less than 15 minutes using EXO's suite of smart sensors and intuitive Kor Software.
  • Dual-channel sensor
  • Measures and outputs both chlorophyll & blue-green algae
  • Options for µg/L and RFU outputs

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO Total Algae PE Smart Sensor

EXO Total Algae Phycoerythrin Digital Smart Sensor - Saltwater

For Phycocyanin (Freshwater) version, please see our EXO TAL-PC Smart Sensor.

Note: This product is intended for sampling and profiling applications.
This sensor must be installed into an EXO Sonde to function. Does not function on its own.

The EXO Total Algae PE Sensor is a digital smart sensor (chlorophyll & phycoerythrin) featuring welded titanium construction and wet-mateable connectors optimized for saltwater use. Complete calibration in less than 15 minutes using EXO's suite of smart sensors and intuitive KOR interface software.

  • Dual-channel sensor
  • Measures and outputs both chlorophyll & blue-green algae
  • Options for µg/L and RFU outputs

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

 

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO fDOM Smart Sensor

XO Fluorescent Dissolved Organic Matter Digital Smart Sensor

Note: This product is intended for sampling and profiling applications.
This sensor must be installed into an EXO Sonde to function. Does not function on its own.



The EXO fDOM (fluorescent dissolved organic matter) 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 Software.

Warning: Emits ultraviolet light. Do not look directly into powered optical sensor.

  • 0 to 300 ppb Quinine Sulfate equivalent (QSE) measurement range
  • 0.01 ppb QSE resolution
  • T63<2 sec response time

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO Ammonium Smart Sensor

EXO Ammonium Digital Smart Sensor (ISE)

Shallow Freshwater Only

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

The EXO guarded Ammonium ISE (ion-selective electrode) 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 Software.

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

  • Measures NH4 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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

 

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO Nitrate Smart Sensor

EXO Nitrate Digital Smart Sensor (ISE)

Shallow Freshwater Only

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

The EXO guarded Nitrate ISE (ion-selective electrode) 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 Software.

Note: Intended for sampling applications. Not for use in an EXO 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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

 

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO Chloride Smart Sensor

EXO Chloride Digital Smart Sensor (ISE)

Shallow Freshwater Only

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

The EXO guarded Chloride ISE (ion-selective electrode) 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 Software.

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

  • Measures Cl- 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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

 

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

YSI EXO Rhodamine Sensor

EXO Rhodamine Digital Smart Sensor

The EXO Rhodamine Sensor provides accurate, in situ measurement of Rhodamine WT in fresh, brackish, sea water, groundwater, stormwater, and wastewater.

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

Rhodamine WT is commonly selected for dye tracer studies due to its ease of use, low adsorptive tendency, strong fluorescence, and negligible environmental impact. Offering the widest detection range with the most sensitive detection limit, the EXO Rhodamine Sensor is ideal for monitoring the movement of water as well as dispersion and mixing characteristics.

Suitable for a variety of applications:

  • Time-of-travel (TOT) studies
  • Hydraulic characterization
  • Mixing zone identification
  • Pollution plume tracing
  • Spill mapping

Notable Specifications:

Range: 0 to 1,000 µg/L or 0 to 100 RFU

Resolution: 0.01 µg/L or 0.01 RFU

Accuracy: +/- 5% or 0.1 µg/L w.i.g

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 sensors are auto-recognized from any port of an EXO sonde making sensor payloads interchangeable and completely customizable.

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

 

Designed for Use with EXO Multiparameter Sondes
• EXO1 sonde has 4 ports and a smaller diameter
• EXO2 sonde has 7 ports for the ultimate monitoring platform
• EXO3 sonde has 5 ports for a lower cost option using the central wiper
• EXO2s sonde offers the same features as the EXO2, but without the battery compartment

 

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