YSI EXO3 Multi-Parameter Water Quality Sonde
Features
- Titanium sensors with wet-mateable, universal sensor ports
- Biofouling protection with central wiper brush and copper-alloy accessories
- Integral SDI-12 communications make it ideal for data collection platforms
- Expedited repair and warranty service
- Lifetime technical support
- More
Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | 599503-00 | EXO3 multi-parameter water quality sonde with 4 sensor ports & 1 wiper port, no depth sensor | Request Quote | Check Availability | ||
![]() | 599503-01 | EXO3 multi-parameter water quality sonde with 4 sensor ports & 1 wiper port, 10m depth sensor | Request Quote | Check Availability | ||
![]() | 599503-02 | EXO3 multi-parameter water quality sonde with 4 sensor ports & 1 wiper port, 100m depth sensor | Request Quote | Check Availability | ||
![]() | 599503-03 | EXO3 multi-parameter water quality sonde with 4 sensor ports & 1 wiper port, 250m depth sensor | Request Quote | Check Availability |




Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | 599090-01 | EXO central wiper | Request Quote | More On The Way | ||
![]() | 599870 | EXO conductivity & temperature sensor | Request Quote | Check Availability | ||
![]() | 599827 | EXO wiped conductivity & temperature sensor | Request Quote | More On The Way | ||
![]() | 577602 | EXO unguarded pH sensor | Request Quote | Check Availability | ||
![]() | 577612 | EXO unguarded pH/ORP sensor | Request Quote | Check Availability | ||
![]() | 599100-01 | EXO optical dissolved oxygen sensor | Request Quote | More On The Way | ||
![]() | 599101-01 | EXO turbidity sensor | Request Quote | More On The Way | ||
![]() | 599102-01 | EXO freshwater total algae sensor (chlorophyll & phycocyanin) | Request Quote | More On The Way | ||
![]() | 599103-01 | EXO saltwater total algae sensor (chlorophyll & phycoerythrin) | Request Quote | Check Availability | ||
![]() | 599104-01 | EXO fDOM sensor | Request Quote | Check Availability | ||
![]() | 608090 | EXO NitraLED UV nitrate sensor kit, includes alignment ring & wiper brush | Request Quote | Check Availability | ||
![]() | 577641 | EXO Rhodamine WT sensor | Request Quote | Check Availability | ||
![]() | 599709 | EXO guarded ISE nitrate sensor | Request Quote | Check Availability | ||
![]() | 599710 | EXO guarded ISE ammonium sensor | Request Quote | Check Availability | ||
![]() | 599711 | EXO guarded ISE chloride sensor | Request Quote | 1 Available | ||
![]() | 577400 | EXO GO wireless communication device | Request Quote | Check Availability | ||
![]() | 599960 | EXO handheld display | Request Quote | 1 Available | ||
![]() | 599040-2 | EXO field cable, 2m | Request Quote | 1 Available | ||
![]() | 599040-4 | EXO field cable, 4m | Request Quote | 1 Available | ||
![]() | 599040-10 | EXO field cable, 10m | Request Quote | 1 Available | ||
![]() | 599040-15 | EXO field cable, 15m | Request Quote | More On The Way | ||
![]() | 599040-33 | EXO field cable, 33m | Request Quote | 1 Available | ||
![]() | 599040-66 | EXO field cable, 66m | Request Quote | Check Availability | ||
![]() | 599040-100 | EXO field cable, 100m | Request Quote | Check Availability | ||
![]() | 599040-150 | EXO field cable, 150m | Request Quote | Check Availability | ||
![]() | 599040-200 | EXO field cable, 200m | Request Quote | Check Availability | ||
![]() | 599040-250 | EXO field cable, 250m | Request Quote | Check Availability | ||
![]() | 599040-300 | EXO field cable, 300m | Request Quote | Check Availability | ||
![]() | 599008-10 | EXO flying lead field cable, 10m | Request Quote | 1 Available | ||
![]() | 599008-15 | EXO flying lead field cable, 15m | Request Quote | Check Availability | ||
![]() | 599008-33 | EXO flying lead field cable, 33m | Request Quote | Check Availability | ||
![]() | 599008-66 | EXO flying lead field cable, 66m | Request Quote | Check Availability | ||
![]() | 599008-100 | EXO flying lead field cable, 100m | Request Quote | Check Availability | ||
![]() | 599810 | EXO USB signal output adapter | $415.00 | 3 Available | ||
![]() | 599820 | EXO DCP signal output adapter | $315.00 | 5 Available | ||
![]() | 599825 | EXO Modbus signal output adapter | $975.00 | Check Availability | ||
![]() | 599201 | EXO2/EXO3 flow cell, 925mL | $350.00 | Check Availability | ||
![]() | 599316 | EXO2/EXO3 calibration & storage cup | $190.00 | 2 Available | ||
![]() | 599667 | EXO2/EXO3 sonde guard kit | $90.00 | 2 Available | ||
![]() | 599564 | EXO2/EXO3 anti-fouling copper-alloy sonde guard | $945.00 | Check Availability | ||
![]() | 599472 | EXO2/EXO3 sonde guard weight, 0.25kg | $175.00 | Check Availability | ||
![]() | 599521 | EXO2/EXO3 zinc anode sonde guard weight, for use with anti-fouling guard | $210.00 | Check Availability | ||
![]() | 599663 | EXO2/EXO3 sonde & probe protective sleeve kit, pack of 10 | $90.00 | Check Availability | ||
![]() | 599020-02 | EXO2/EXO3 hard-sided wheeled carrying case | $435.00 | Check Availability | ||
![]() | 914 | Deployment pipe assembly with dual eye bolts, 4" schedule 80 PVC, 32" length | $445.00 | Check Availability | ||
![]() | 914M | Deployment pipe assembly with stop bolt & threaded male adapter, 4" schedule 80 PVC, 32" length | $195.00 | 20 Available | ||
![]() | CAGE-EXO2 | EXO2/EXO3 sonde mooring cage with clamps | $1,195.00 | Check Availability | ||
![]() | BP-EXO2 | EXO2/EXO3 sonde bottom platform with clamps | $1,695.00 | Check Availability | ||
![]() | CB-40 | CB-40 data buoy with 4" instrument pipe, 40 lb. buoyancy | $1,495.00 | Check Availability | ||
![]() | 6SCBL-EXOCBL | Waterproof adapter for converting 6-Series field cable to EXO field cable | $1,195.00 | Check Availability | ||
![]() | 630110 | ProSample PM-12 mini portable sampler with SDI-12 connectivity | $3,765.00 | Check Availability | ||
![]() | 630111 | ProSample P-12 portable sampler with SDI-12 connectivity | $3,895.00 | Check Availability |






















The YSI EXO represents the next generation of water quality instruments from YSI. The advanced sonde platform offers a wide range of capabilities to those dedicated to monitoring natural aquatic environments such as oceans, estuaries, rivers, lakes, and groundwater. With a highly efficient power management platform, robust construction, and chemistry-free anti-fouling system, EXO allows accurate data collection for up to 90 days between service intervals.
The EXO3 sonde includes four sensor ports and a central anti-fouling wiper option. Sensor parameters include temperature, conductivity, depth, dissolved oxygen, pH, ORP, total algae (phycocyanin or phycoerythrin along with chlorophyll), turbidity, fluorescent dissolved organic matter (fDOM), Rhodamine WT, UV nitrate, ISE ammonium, ISE nitrate, and ISE chloride. The sonde can also output four calculated parameters including salinity, specific conductance, total dissolved solids (TDS) and total suspended solids (TSS).
All EXO sensors are digital sensors with on-board signal processing and memory. Built-in sensor diagnostic and calibration data allows users to calibrate multiple sensors in one sonde and distribute to various other sondes in the field. Wet-mateable connectors allow for swaps in wet conditions, while active port monitoring automatically detects each sensor and verifies operation.
EXO3 Specifications
Diameter: 7.62cm (3.00 in)
Length: 58.67cm (23.10 in)
Peripheral Ports: 1 power communication port
Sensor Ports: 5 (4 ports available when central wiper used)
3-Year Warranty: Sonde; handheld
2-Year Warranty: Cables; conductivity/temperature and optical sensors; electronics base for pH, pH/ORP, ammonium, chloride, and nitrate sensors
1-Year Warranty: Optical DO cap and replaceable reagent modules for pH and pH/ORP sensors
3-Month Warranty:Â Replaceable reagent modules for ammonium, chloride, and nitrate sensors
Weight: 2.00kg (4.41 lbs)
General Sonde Specifications
Battery Life: 60 days**
Computer Interface: YSIP via USB Signal Output Adapter (SOA) and Bluetooth
Output Options: SDI-12 native output; RS-232 & SDI-12 via DCP-SOA; Modbus & RS-485 via Modbus-SOA
Data Memory: 512 MB total memory; >1,000,000 Logged readings
Depth Rating: 0 to 250m (0 to 820 ft)
Sample Rate: Up to 4 Hz
Operating Temperature: -5 to +50°C (23 to 122°F)
Storage Temperature: -20 to +80°C (-4 to 176°F)
**Typically 60 days at 20ËšC at 15-minute logging interval; temperature/conductivity, pH/ORP, DO, and turbidity sensors installed with central wiper that rotates once per logging interval on EXO3. Battery life is heavily dependent on sensor configuration.
- (1) EXO3 sonde
- (1) Probe guard
- (1) Calibration cup
- (1) Tool kit
- (3) Port plugs
- (2) D-cell alkaline batteries
- (1) USB drive loaded with manual & KOR Software
No, only EXO sensors can be used with EXO sondes.
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