Go more places with the EXO2s sonde!
The more maneuverable monitoring platform.
Technical specification (PDF)
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
• High-accuracy sensors with on-board memory
• Wireless communications
• Seamless integration into marine, estuarine, freshwater and ground water monitoring systems
Smart Sondes and Sensors
Extremely versatile instrument, allowing the user to automatically configure a sonde with different sensor for different applications in minutes
Accuracy
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 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
| Anti Fouling | Central Wiper |
|---|---|
| Depth / Pressure Rating / Limit | 0 to 250 m (0 to 820 ft) |
| Desktop Software Compatible | Yes |
| Flow Cell | Yes |
| Languages | German, English, French, Japanese, Chinese, Spanish |
| Logging Capabilities | Yes |
| Medium | Fresh, sea or polluted water |
| Memory | >1,000,000 logged readings, 512 MB total memory |
| Monitoring | Yes |
| Multiparameter | Yes |
| Operating Temperature | -5 to +50°C |
| Power | 4 Alkaline Batteries |
| Sampling | Yes |
| Smart Sensors / Ports | Yes |
| Storage Temperature | -20 to +80°C |
| Unit of Measure | Parameter Dependent |
| User Calibratable | Yes |
| Waterproof | Yes |
| EXO2 Specifications | ||
|---|---|---|
| Battery Life | 90 days* | |
| Communications | Computer Interface: Bluetooth wireless technology (between sonde and handheld or computer with KOR software), USB Output Options: USB with signal output adapter (SOA); RS-232 & SDI-12 with DCP-SOA. |
|
| Diameter | 7.62 cm (3.00 in) | |
| Length | 71.10 cm (28.00 in) | |
| Peripheral Ports | 1 power communication port; 1 auxiliary port for third-party sensors (future functionality; not active yet) | |
| Sample Rate | Up to 4 Hz | |
| Sensor Ports | 7 (6 ports available when central wiper used) | |
| Warranty: 3 mos | Replaceable reagent modules for ammonium, chloride, and nitrate | |
| Warranty: 1 yr | Optical DO membranes and replaceable reagent modules for pH and pH/ORP | |
| Warranty: 2 yrs | Cables; sonde bulkheads; handheld; conductivity, temperature, depth, and optical sensors; electronics base for pH, pH/ORP, ammonium, chloride, and nitrate sensors; and accessories | |
| Weight | 3.60 kg (7.90 lbs) | |
*Typically 90 days at 20˚C at 15-minute logging interval; temperature/conductivity, pH/ORP, DO, total algae, and turbidity sensors installed with central wiper that rotates once per logging interval on EXO2. Battery life is heavily dependent on sensor configuration.
| EXO Parameter Measured | Sensor** | Range | Accuracy | Response | Resolution |
|---|---|---|---|---|---|
| Ammonium (freshwater only) |
Ammonium Sensor Ammonia with pH sensor SKU: 599710 |
0 to 200 mg/L (0 to 30˚C) | ±10% of reading or 2 mg/L-N, w.i.g. | T63<30 sec | 0.01 mg/L |
| Barometric Pressure | Integral Barometer | 375 to 825 mmHg | ±1.5 mmHg from 0 to 50°C | – | 0.1 mmHg |
| Blue-green Algae, Phycocyanin |
Total Algae Sensor
SKU: 599102-01
|
0 to 100 μg/L; 0 to 100 RFU; |
Linearity: R2 >0.999 for serial dilution of Rhodamine WT solution from 0 to 100 μg/mL BGA-PC equivalents | T63<2 sec | 0.01 μg/L; 0.01 RFU |
| Blue-green Algae, Phycoerythrin |
Total Algae Sensor
SKU: 599103-01
|
0 to 280 μg/L; 0 to 100 RFU; |
Linearity: R2 >0.999 for serial dilution of Rhodamine WT solution from 0 to 280 μg/mL BGA-PE equivalents | T63<2 sec | 0.01 μg/L; 0.01 RFU |
| Chloride (freshwater only) |
Chloride Sensor SKU: 599711 |
0 to 18000 mg/L-Cl (0 to 30˚C) | ±15% of reading or 5 mg/L-Cl, w.i.g. | T63<30 sec | 0.01 mg/L |
| Chlorophyll | Total Algae Sensor | 0 to 400 μg/L Chl; 0 to 100 RFU |
Linearity: R2 >0.999 for serial dilution of Rhodamine WT solution from 0 to 400 μg/L Chl a equivalents | T63<2 sec | 0.01 μg/L Chl; 0.01 RFU |
| Conductivity1 | Conductivity / Temperature Sensor SKU: 599870 |
0 to 200 mS/cm | 0 to 100: ±0.5% of reading or 0.001 mS/cm, w.i.g.; 100 to 200: ±1% of reading |
T63<2 sec | 0.0001 to 0.01 mS/cm (range dependent) |
| Depth – 10 m | Integral, Non-vented Depth Sensor3 | 0 to 10 m (0 to 33 ft) |
±0.04% FS (±0.004 m or ±0.013 ft) | T63<2 sec | 0.001 m (0.001 ft) (auto-ranging) |
| Depth – 100 m | Integral, Non-vented Depth Sensor3 | 0 to 100 m (0 to 328 ft) |
±0.04% FS (±0.04 m or ±0.13 ft) | T63<2 sec | 0.001 m (0.001 ft) (auto-ranging) |
| Depth – 250 m | Integral, Non-vented Depth Sensor3 | 0 to 250 m (0 to 820 ft) |
±0.04% FS (±0.10 m or ±0.33 ft) | T63<2 sec | 0.001 m (0.001 ft) (auto-ranging) |
| Dissolved Oxygen, % air saturation | Optical Dissolved Oxygen Sensor SKU: 599100-01 |
0 to 500% air saturation |
0 to 200%: ±1% of reading or 1% saturation, w.i.g.; 200 to 500%: ±5% of reading 4 |
T63<5 sec5 | 0.1% air saturation |
| Dissolved Oxygen, mg/L | Optical Dissolved Oxygen Sensor SKU: 599100-01 |
0 to 50 mg/L | 0 to 20 mg/L: ±0.1 mg/L or 1% of reading, w.i.g.; 20 to 50 mg/L: ±5% of reading 4 |
T63<5 sec5 | 0.01 mg/L |
| fDOM (CDOM) |
fDOM Sensor SKU: 599104-01 |
0 to 300 ppb Quinine Sulfate equivalents (QSU) | Linearity: R2 > 0.999 for serial dilution of 300 ppb QS solution Detection Limit: 0.07 ppb QSU |
T63<2 sec | 0.01 ppb QSU |
| Level, Vented – 10 m | Integral Vented Level Sensor | 0 to 10 m (0 to 33 ft) | ±0.03% FS (±0.003 m or ±0.010 ft) | T63<2 sec | 0.001 m (0.001 ft) |
| Nitrate (freshwater only) |
Nitrate Sensor SKU: 599709 |
0 to 200 mg/L-N (0 to 30˚C) | ±10% of reading or 2 mg/L-N, w.i.g. | T63<30 sec | 0.01 mg/L |
| pH | pH Sensor SKU:599701 guarded, 599702 unguardedpH/ORP Sensor SKU:599705 guarded, 599706 unguarded |
0 to 14 units | ±0.1 pH units within ±10˚C of calibration temp; ±0.2 pH units for entire temp range7 |
T63<3 sec8 | 0.01 units |
| ORP | pH/ORP Sensor SKU:599705 guarded, 599706 unguarded |
-999 to 999 mV | ±20 mV in Redox standard solution | T63<5 sec6 | 0.1 mV |
| Temperature | Conductivity / Temperature Sensor SKU: 599870 |
-5 to 35°C 35 to 50°C |
±0.01°C2 ±0.05°C2 |
T63<1 sec | 0.001 °C |
| Turbidity9 | Turbidity Sensor SKU: 599101-01 |
0 to 4000 FNU | 0 to 999 FNU: 0.3 FNU or ±2% of reading, w.i.g.; 1000 to 4000 FNU: ±5% of reading10 |
T63<2 sec | 0 to 999 FNU = 0.01 FNU; 1000 to 4000 FNU = 0.1 FNU |
| Salinity | Calculated from Conductivity and Temperature11 | 0 to 70 ppt | ±1.0% of reading or 0.1 ppt, w.i.g. | T63<2 sec | 0.01 ppt |
| Specific Conductance | Calculated from Conductivity and Temperature11 | 0 to 200 mS/cm | ±0.5% of reading or .001 mS/cm, w.i.g. | – | 0.001, 0.01, 0.1 mS/cm (auto-scaling) |
| Total Dissolved Solids (TDS) | Calculated from Conductivity and Temperature11 | 0 to 100,000 mg/L Cal constant range 0.30 to 1.00 (0.64 default) |
Not Specified | – | Variable |
| Total Suspended Solids (TSS) | Calculated from Turbidity and user reference samples | 0 to 1500 mg/L | Not specified | T63<2 sec | Variable |
**Specifications indicate typical performance and are subject to change. All sensors have a depth rating to 250 m (820 ft), except shallow and medium depth sensors, ammonium, chloride, and nitrate. Accuracy specification is attained immediately following calibration under controlled and stable environmental conditions. Performance in the natural environment may vary from quoted specification.
w.i.g. = whichever is greater
EXO sensors are not compatible with YSI 6-Series sondes, sensors, or handheld.
1Outputs of specific conductance (conductivity corrected to 25˚C) and total dissolved solids are also provided. See Calculated Parameters and footnote 11.
2 Temperature accuracy traceable to NIST standards
3Accuracy specifications apply to conductivity levels of 0 to 100,000 μS/cm.
4 Relative to calibration gases
5 When transferred from air-saturated water to stirred deaerated water
6 When transferred from water-saturated air to Zobell solution
7Within the environmental pH range of pH 4 to pH 10.
8On transfer from water-saturated air to rapidly stirred air-saturated water at a specific conductance of 800 μS/cm at 20˚C; T63<5 seconds on transfer from water-saturated air to slowly-stirred air-saturated water.
9 Calibration: 1-, 2-, or 3-point, user-selectable
10 Performance based on 3-point calibration done with YSI AMCO-AEPA standards of 0, 124, and 1010 FNU. The same type of standard must be used for all calibration points.
11 Values are automatically calculated from conductivity according to algorithms found in Standard Methods for the Examination of Water and Wastewater (Ed. 1989).
Xenoy is a trademark of SABIC Innovative Plastics IP BV.
EXO Bluetooth modules comply with Part 15C of FCC Rules and have FCC, CE Mark and C-tick approval. Bluetooth-type approvals and regulations can be country specific. Check local laws and regulations to insure that the use of wireless products purchased from Xylem are in full compliance.