YSI EXO1 Multiparameter Sonde

EXO 1 multiparameter sonde

Capturing accurate data in fresh water, ground water and marine aquatic environments is easy with . The versatile multiparameter EXO1 sonde is ideal for estuarine, surface water, or ground water applications.

Instrument Only. Cables, probes/sensors, and accessories sold separately - please see the "Accessories" tab for details.

  • Features
  • Specifications
  • Parameters Measured
  • Accessories

The EXO 1 is a muliparameter instrument that collects data with up to four user-replaceable sensors and an integral pressure transducer for depth.

Key Benefits

  • High-accuracy sensors with on-board memory
  • Wireless communications
  • Fast response times for profiling and sampling
  • 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

Smart Ports: Each sensor port on the sonde accepts any EXO water quality sensor and automatically recognizes it. Sensors are user-replaceable and made from rugged titanium housing.

Sensor Options:

  • Conductivity and Temperature
  • Dissolved Oxygen (optical)
  • fDOM (Fluorescent Dissolved Organic Matter, surrogate for CDOM)
  • pH or pH / ORPDepth (integral)
  • Total Algae (Dual-channel Chlorophyll and Blue-green Algae)
  • Turbidity

Accuracy

Tested in a variety of rigorous field conditions as well as lab conditions to ensure accuracy and response times

Sample 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

 

Depth / Pressure Rating / Limit 0 to 250 m (0 to 820 ft)
Desktop Software Compatible KOR for EXO
Flow Cell Yes
Languages Chinese, German, English, Japanese, French, Spanish
Logging Capabilities Yes
Medium Fresh, sea or polluted water
Memory 512 MB total memory, >1,000,000 logged readings
Multiparameter Yes
Operating Temperature -5 to +50°C
Power 2 Alkaline Batteries
Sampling Yes
Smart Sensors / Ports Yes
Storage Temperature -20 to +80°C
Unit of Measure Parameter Dependent
User Calibratable Yes
Waterproof Yes

EXO1 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 4.70 cm (1.85 in)
Length 64.77 cm (25.50 in)
Peripheral Ports 1 power communication port
Sample Rate Up to 4 Hz
Sensor Ports 4
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 1.42 kg (3.15 lbs)

*Typically 90 days at 20˚C at 15-minute logging interval; temperature/conductivity, pH/ORP, DO, and turbidity sensors installed on EXO1. Battery life is heavily dependent on sensor configuration.

EXO Parameter Measured Sensor** Range Accuracy Response Resolution
Ammonium Ammonium Sensor 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
(freshwater only) Ammonia with pH sensor
SKU: 599710
Barometric Pressure Integral Barometer 375 to 825 mmHg ±1.5 mmHg from 0 to 50°C - 0.1 mmHg
Blue-green Algae, Total Algae Sensor 0 to 100 μg/L; 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;
Phycocyanin SKU: 599102-01 0 to 100 RFU; 0.01 RFU
Blue-green Algae, Total Algae Sensor
0 to 280 μg/L; 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;
Phycoerythrin SKU: 599103-01 0 to 100 RFU; 0.01 RFU
Chloride Chloride Sensor 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
(freshwater only) SKU: 599711
Chlorophyll Total Algae Sensor
0 to 400 μg/L Chl; 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;
SKU: 599102-01,599103-01 0 to 100 RFU 0.01 RFU
Conductivity1 Conductivity / Temperature Sensor 0 to 200 mS/cm 0 to 100: ±0.5% of reading or 0.001 mS/cm, w.i.g.; T63<2 sec 0.0001 to 0.01 mS/cm (range dependent)
SKU: 599870 100 to 200: ±1% of reading
Depth - 10 m Integral, Non-vented Depth Sensor3 0 to 10 m ±0.04% FS (±0.004 m or ±0.013 ft) T63<2 sec 0.001 m (0.001 ft)
(0 to 33 ft) (auto-ranging)
Depth - 100 m Integral, Non-vented Depth Sensor3 0 to 100 m ±0.04% FS (±0.04 m or ±0.13 ft) T63<2 sec 0.001 m (0.001 ft)
(0 to 328 ft) (auto-ranging)
Depth - 250 m Integral, Non-vented Depth Sensor3 0 to 250 m ±0.04% FS (±0.10 m or ±0.33 ft) T63<2 sec 0.001 m (0.001 ft)
(0 to 820 ft) (auto-ranging)
Dissolved Oxygen, % air saturation Optical Dissolved Oxygen Sensor 0 to 500% 0 to 200%: ±1% of reading or 1% saturation, w.i.g.; T63<5 sec5 0.1% air saturation
SKU: 599100-01 air saturation 200 to 500%: ±5% of reading 4
Dissolved Oxygen, mg/L Optical Dissolved Oxygen Sensor 0 to 50 mg/L 0 to 20 mg/L: ±0.1 mg/L or 1% of reading, w.i.g.; T63<5 sec5 0.01 mg/L
SKU: 599100-01 20 to 50 mg/L: ±5% of reading 4
fDOM fDOM Sensor 0 to 300 ppb Quinine Sulfate equivalents (QSU) Linearity: R2 > 0.999 for serial dilution of 300 ppb QS solution T63<2 sec 0.01 ppb QSU
(CDOM) SKU: 599104-01 Detection Limit: 0.07 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 Nitrate Sensor 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
(freshwater only) SKU: 599709
pH pH Sensor 0 to 14 units ±0.1 pH units within ±10˚C of calibration temp; T63<3 sec8 0.01 units
SKU:599701 guarded,599702 unguarded ±0.2 pH units for entire temp range7
pH/ORP Sensor
SKU:599705 guarded,599706 unguarded
ORP pH/ORP Sensor -999 to 999 mV ±20 mV in Redox standard solution T63<5 sec6 0.1 mV
SKU:599705 guarded, 
599706 unguarded
Temperature Conductivity / Temperature Sensor -5 to 35°C ±0.01°C2 T63<1 sec 0.001 °C
SKU: 599870 35 to 50°C ±0.05°C2
Turbidity9 Turbidity Sensor 0 to 4000 FNU 0 to 999 FNU: 0.3 FNU or ±2% of reading, w.i.g.; T63<2 sec 0 to 999 FNU = 0.01 FNU;
SKU: 599101-01 1000 to 4000 FNU: ±5% of reading10 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 Not Specified - Variable
Cal constant range
0.30 to 1.00
(0.64 default)
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.

Contact us for more information

  • Turbidity Standard
  • KOR User Interface Software for EXO - USB
  • EXO1 Sonde Weight Kit - Profiling Accessory
  • EXO1 Replacement O-Ring Kit
  • EXO1 Replacement Bail
  • EXO1 Hard Sided Wheeled Carrying Case
  • EXO1 Guard Assembly Kit - EXO1 Probe Guard
  • EXO1 Coastal Anode Guard Weight Kit
  • EXO1 Anti-Fouling Guard - Copper-alloy guard
  • EXO1 and ProDSS Flow Cell
  • EXO1 and ProDSS Calibration and Storage Cup - Replacement Cup
  • EXO Wiper Brush Guard Replacement Kit - Replacement guards for EXO2 central wiper
  • EXO Vented Flying Lead Cable
  • EXO Turbidity Smart Sensor - Optical Sensor
  • EXO Total Algae PE Smart Sensor - Phycoerythrin - Saltwater
  • EXO Total Algae PC Smart Sensor - Phycocyanin - Freshwater
  • EXO Tool Kit - Replacement Tool Kit
  • EXO Signal Output Adaptor - USB
  • EXO Signal Output Adaptor - DCP
  • EXO Sensor Retaining Nut Kit, Titanium - Replacement sensor retaining nuts
  • EXO Replacement Sensor Tool & Magnet Kit - Replacement Tools
  • EXO Replacement 6-Pin Dummy Plug Kit, Female
  • EXO Rechargeable Lithium-Ion Battery - For EXO Handheld Display
  • EXO pH Smart Sensor - Unguarded
  • EXO pH Smart Sensor - Guarded
  • EXO pH Sensor Replacement Module - Un-Guarded pH Module
  • EXO pH Sensor Replacement Module - Guarded pH Module
  • EXO pH & ORP Smart Sensor - Guarded
  • EXO pH & ORP Sensor Replacement Module - Guarded pH/ORP Module
  • EXO pH & ORP Sensor Replacement Module - Un-Guarded pH/ORP Module
  • EXO pH & ORP Smart Sensor - Unguarded
  • EXO Optical Dissolved Oxygen Smart Sensor - Optical Sensor
  • EXO Nitrate Smart Sensor - Shallow Freshwater Only
  • EXO Nitrate Sensor Replacement Module - Shallow Freshwater Only
  • EXO Handheld Display - For use with EXO Sondes
  • EXO Flying Lead Cable
  • EXO Field Cable
  • EXO fDOM Smart Sensor - Fluorescent Dissolved Organic Matter
  • EXO Dissolved Oxygen Sensor Cap Replacement Kit
  • EXO Conductivity & Temperature Smart Sensor
  • EXO Conductivity & Temperature Sensor Cleaning Brush - Flow Cell Brush
  • EXO Coastal Zinc Anode Kit - Optional Anti-Fouling Accessory for EXO2
  • EXO Chloride Smart Sensor - Shallow Freshwater Only
  • EXO Chloride Sensor Replacement Module - Shallow Freshwater Only
  • EXO Ammonium Smart Sensor - Shallow Freshwater Only
  • EXO Ammonium Sensor Replacement Module - Shallow Freshwater Only
  • EXO 4-Pin Bulkhead Connector Port Plug
  • Dessicant Canister Kit

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