YSI EXO1 Water Quality Sonde

Name: YSI EXO1 Water Quality Sonde
Brand: YSI
SKU: EXO1
Availability: InStock

by YSI

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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.

Overview
Key Benefits
Smart Sensors
Specs

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

	Highest Data Quality Onboard monitoring systems verify sensor operation
	Multiparameter Monitoring 4 universal ports for allow for any combination of smart sensors
	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 (Ammonium, Chloride, and Nitrate)
• NitraLED (UV 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

Depth / Pressure Rating / Limit	0 to 250 m (0 to 820 ft)
Desktop Software Compatible	KOR for EXO
Flow Cell	Yes
Languages	English, Spanish, French, Japanese, German, Chinese
Logging Capabilities	Yes
Medium	Fresh, sea or polluted water
Memory	>1,000,000 logged readings, 512 MB total memory
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 (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 SKU: 599102-01, 599103-01	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 unguarded pH/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

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YSI EXO1 Water Quality Sonde