YSI 6920 V2 - Compact Sonde for Unattended Monitoring of Dissolved Oxygen and More

6920 V2-1 has one optical port, conductivity/temperature port, Rapid Pulse Dissolved Oxygen port, pH/ORP port, and 3 ISE ports
6920 V2-2 has 2 optical ports, conductivity/temperature port, pH port, and one ISE port.

YSI 6920 V2-2 sensor view showing Temperature/Conductivity, Chloride, pH, as well as Optical DO and Turbidity.

YSI 6920V2 sonde with flow cell for ground water monitoring

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Available optical sensors include ROX optical dissolved oxygen, blue-green algae, chlorophyll, turbidity, or rhodamine. A pressure sensor is an option on both versions. Additional parameters include:

Salinity
Specific Conductance
Depth or Shallow Vented Level
TDS
Open-channel Flow
Nitrate-nitrogen, Ammonia/Ammonium-nitrogen, or Chloride

Extend deployment intervals by 3 times or more with NEW Anti-Fouling Kits.

This product features:

Field-replaceable sensors
Choice between one or two optical ports
Self-cleaning optical sensors and anti-fouling components for extended deployment
RS-232 and SDI-12 communications
Battery power for long-term deployments

Helpful information about water quality monitoring and long-term deployments at YSI's True Cost of Data web site and forum.

You can rely on the accuracy and reliability of YSI's sensor technology - the performance of select sensors on the 6920 V2 has been ETV Verified.*

Two versions are available:

The 6920 V2-2 with	and the 6920 V2-1 with
2 optical ports Conductivity/temperature port pH or pH/ORP port ISE port	1optical port Conductivity/temperature port Rapid Pulse DO port pH or pH/ORP port 3 ISE ports

Medium		Fresh, sea or polluted water
Temperature	Operating Storage	-5 to +50°C -10 to +60°C
Communications		RS-232, SDI-12
Software		EcoWatch®
Dimensions	Diameter Length Weight	2.85 in, 7.24 cm 18 in, 45.7 cm 4 lbs, 1.8 kg
Power	External Internal	12 V DC 8 AA-size alkaline batteries
Certifications		CE, EU Battery Compliance, FCC, IP-67, WEEE, and MCERTS Assembled in the USA

		Range	Resolution	Accuracy
ROX™ Optical Dissolved Oxygen• % Saturation		0 to 500%	0.1%	0 to 200%: ±1% of reading or 1% air saturation, whichever is greater; 200 to 500%: ±15% of reading
ROX™ Optical Dissolved Oxygen• mg/L		0 to 50 mg/L	0.01 mg/L	0 to 20 mg/L: ± 0.1 mg/L or 1% of reading, whichever is greater; 20 to 50 mg/L: ±15% of reading
Dissolved Oxygen•• % Saturation 6562 Rapid Pulse™ Sensor*		0 to 500%	0.1%	0 to 200%: ±2% of reading or 2% air saturation, whichever is greater; 200 to 500%: ±6% of reading
Dissolved Oxygen•• mg/L 6562 Rapid Pulse™ Sensor*		0 to 50 mg/L	0.01 mg/L	0 to 20 mg/L: ± 0.2 mg/L or 2% of reading, whichever is greater; 20 to 50 mg/L: ±6% of reading
Conductivity••• 6560 Sensor*		0 to 100 mS/cm	0.001 to 0.1 mS/cm (range dependent)	±0.5% of reading + 0.001 mS/cm
Salinity		0 to 70 ppt	0.01 ppt	±1% of reading or 0.1 ppt, whichever is greater
Temperature 6560 Sensor*		-5 to +50°C	0.01°C	±0.15°C
pH 6561 Sensor*		0 to 14 units	0.01 unit	±0.2 unit
ORP		-999 to +999 mV	0.1 mV	±20 mV
Depth	Medium Shallow Vented Level	0 to 200 ft, 61 m 0 to 30 ft, 9.1 m 0 to 30 ft, 9.1 m	0.001 ft, 0.001 m 0.001 ft, 0.001 m 0.001 ft, 0.001 m	±0.4 ft, ±0.12 m ±0.06 ft, ±0.02 m ±0.01 ft, 0.003 m
Turbidity• 6136 Sensor*		0 to 1,000 NTU	0.1 NTU	±2% of reading or 0.3 NTU, whichever is greater**
Nitrate/nitrogen••••		0 to 200 mg/L-N	0.001 to 1 mg/L-N (range dependent)	±10% of reading or 2 mg/L, whichever is greater
Ammonium/ammonia/ nitrogen••••		0 to 200 mg/L-N	0.001 to 1 mg/L-N (range dependent)	±10% of reading or 2 mg/L, whichever is greater
Chloride••••		0 to 1000 mg/L	0.001 to 1 mg/L (range dependent)	±15% of reading or 5 mg/L, whichever is greater
Rhodamine•		0-200 μg/L	0.1 μg/L	±5% reading or 1 μg/L, whichever is greater
• Maximum depth rating for all optical probes is 200 feet, 61 m. Turbidity and Rhodamine are also available in a Deep Depth option (0 to 200 m). •• Rapid Pulse is only available on 6920 V2-1 (one optical port version). ••• Report outputs of specific conductance (conductivity corrected to 25° C), resistivity, and total dissolved solids are also provided. These values are automatically calculated from conductivity according to algorithms found in Standard Methods for the Examination of Water and Wastewater (ed 1989). •••• Freshwater only. Maximum depth rating of 50 feet, 15.2 m. 6600 V2-2 has 3 ISE ports; not available on the 6600V2-4.				**In YSI AMCO-AEPA Polymer Standards.

	Range	Detection Limit	Resolution	Linearity
Blue-Green Algae Phycocyanin•	~0 to 280,000 cells/mL† 0 to 100 RFU	~220 cells/mL§	1 cell/mL 0.1 RFU	R2 > 0.9999**
Blue-Green Algae Phycoerythrin•	~0 to 200,000 cells/mL† 0 to 100 RFU	~450 cells/mL§§	1 cell/mL 0.1 RFU	R2 > 0.9999***
Chlorophyll• 6025 Sensor*	~0 to 400 μg/L 0 to 100 RFU	~0.1 μg/L§§§	0.1 μg/L Chl 0.1% RFU	R2 > 0.9999****
• Maximum depth rating for all optical probes is 200 feet, 61 m. Also available in a Deep Depth option (0 to 200 m). RFU = Relative Fluorescence Units	† Explanation of Ranges can be found in the ‘Principles of Operation’ section of the 6-Series Manual, Rev D.	§ Estimated from cultures of Microcystis aeruginosa. §§ Estimated from cultures Synechococcus sp. §§§ Determined from cultures of Isochrysis sp. and chlorophyll a concentration determined via extractions.		For serial dilution of Rhodamine WT (0-400 ug/L). For serial dilution of Rhodamine WT (0-8 μg/L). ***For serial dilution of Rhodamine WT (0-500 ug/L).
*Sensors with listed with ETV logo were submitted to the ETV program on the YSI 6600EDS. Information on performance characteristics of YSI water quality sensors can be found at www.epa.gov/etv, or call YSI at 800.897.4151 800.897.4151 for the ETV verification report. Use of ETV name or logo does not imply approval or certification of this product nor does it make any explicit or implied warranties or guarantees as to product performance.

		3682 Zobell ORP Calibration Solution YSI 3682 Zobell solution is used for calibrating ORP/Redox on several YSI instruments.

		3824 Assorted pH Buffers Case Various pH buffers for pH probe calibration.

		5580 Confidence Solution® Never worry about the accuracy of your pH, ORP, or conductivity data again! Ensure probe performance with the 5580 Confidence Solution®.

		5775 Standard DO Membranes YSI 5775 standard stretch-style dissolved oxygen membranes.

		6-Series Field Cables Rugged cables designed for field use with 6-series sondes.

		6025 Chlorophyll Sensor (6-Series) Determine phytoplankton concentrations by detecting the flourescence from chlorophyll in situ.

		6067B Adapter Cables YSI 6-series sonde to RS-232 adapter. Indoor-use only.

		6095B Adapter Cable YSI 6-series field cable to RS-232 adapter.

		6112 PC Interface Cable for 650MDS MS-8 to pc serial port connector for 650MDS.

		6130 Rhodamine Sensor (6-Series) Detect accurate, in situ trace dye levels with the 6130 Rhodamine Sensor.

		6131 and 6132 Blue-Green Algae Sensors (6-Series) Measure in situ blue-green algae levels in salt- or fresh-water with YSI 6131 and 6132 optical blue-green algae sensors.

		6136 Turbidity Sensor (6-Series) Collect accurate, in situ measurement of turbidity in fresh, brackish, and sea water.

		6144 Wiper Pads for Optical Sensors Wiper pad kit for 6-series optical DO, BGA, turbidity, chlorophyll, and rhodamine probes.

		6150 ROX ® Optical Dissolved Oxygen Sensor (6-Series) Rugged and reliable optical dissolved oxygen sensor used with 6-Series sondes.

		6155 Membrane Kit for ROX Optical DO Sensor Replacement membrane kit for 6150 ROX optical dissolved oxygen sensor (6-series sondes).

		6182 Zinc Anode Kit A zinc "sacrificial" anode minimizes corrosion damage to metallic parts of the sonde, namely its stainless steel connector.

		6425 Anti-fouling Optical Chlorophyll Sensor (6-Series) Copper-alloy anti-fouling optical chlorophyll sensor used with 6-Series sondes.

		6431 and 6432 Anti-fouling Optical Blue-Green Algae Sensors (6-Series) Copper-alloy anti-fouling optical blue-green algae sensor used with 6-Series sondes.

		6436 Anti-fouling Optical Turbidity Sensor (6-Series) Copper-alloy anti-fouling optical turbidity sensor used with 6-Series sondes.

		6450 Anti-fouling ROX ® Optical Dissolved Oxygen Sensor (6-Series) Copper-alloy anti-fouling optical dissolved oxygen sensor used with 6-Series sondes.

		6560 Conductivity/Temperature Probe Stable multi-probe measures conductivity and temperature levels and calculates salinity values. Thermistor readings are used to temperature-correct other parameter measurements.

		6562 Rapid Pulse Dissolved Oxygen Sensor Obtain unprecedented accuracy and reliability with the YSI 6562 Rapid Pulse™ Dissolved Oxygen Sensor.

		6570 Sonde Maintenance Kit Basic maintenance kit for all YSI 6-Series sondes except the 600R and 600QS.

		6624 Wiper Kit for Chlorophyll and Rhodamine Sensors Replacement wipers for 6-series 6025 Chlorophyll probe or 6130 Rhodamine WT probe.

		6625 Wiper Kit for Optical DO, BGA, Turbidity Sensors Replacement wiper kit for the 6150 optical dissolved oxygen probe; 6131 and 6132 blue-green algae probes; or 6136 turbidity probe.

		6625AF Anti-fouling Wiper Kit for Optical DO, BGA, Turbidity Sensors Replacement wiper kit (copper) for the 6150 optical dissolved oxygen probe; 6131 and 6132 blue-green algae probes; or 6136 turbidity probe. Use with firmware version 3.06 or higher.

		6882, 6883, 6884 Nutrient Ion-Selective-Electrode Sensors (6-Series) Measure Nutrient Data with Nitrate, Ammonium, and Chloride with Ion Selective Electrodes

		6885 Sonde Weight Kit Weight kit for 6820 or 6920 sondes.

		6930 Rugged Carrying Case A hard-sided carrying case ideal for all 6-Series sondes and systems.

		Anti-fouling C-Spray Protective Probe Solution C-Spray is a unique nanopolymer coating that inhibits biofouling attachment on the YSI 6560 Conductivity/Temperature Probe and other sensors and water quality instruments.

		Anti-fouling Copper Tape Copper tape for YSI water quality sondes and sensors provides biofouling protection and extends deployment lengths.

		Anti-fouling Sensor Port Plugs Copper-alloy port plugs protect unused sensor ports on YSI 6-Series sondes and provide anti-fouling protection.

		Anti-fouling Sensor Screen Copper-mesh screens block organisms and provide biofouling protection for the 6560 Conductivity-Temperature probe and non-wiped pH probes.

		Anti-fouling Sonde Guards Copper-alloy sonde guards protect water quality sensors and provide biofouling protection for YSI 6-Series Sondes.

		Conductivity Calibration Solutions NIST-traceable conductivity solutions to calibrate both field instruments and lab instruments and cells together for maximum accuracy.

		pH Sensors (6-Series) Simple, accurate pH measurement in sensors designed for minimal maintenance in sampling, profiling, and long-term monitoring applications.

		Turbidity Calibration Solutions YSI turbidity solutions calibrate your instruments for maximum accuracy.

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