The sonde comes in two versions:

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

Available optical sensors:

• ROX optical dissolved oxygen
• Blue-green algae
• Chlorophyll
• Turbidity
• 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 (ISEs)

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 sensor 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.*

Related Products
EXO1 Water Quality Sonde	EXO2 Water Quality Sonde	EXO Handheld	Multiparameter Sondes
6600V2	6820 V2	600OMS V2	600XL V2 and 600XLM V2
600LS	EcoNet

 

 

 

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	1 optical 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 optical probes is 200 feet, 61 m. Turbidity and Rhodamine are available in a Deep Depth option (0 to 200 m). Anti-fouling optical probes have depth rating of 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.

Manuals

6-Series Sonde Quick Start Guide

6-Series Multiparameter Water Quality Sondes User Manual

Tips, FAQs & Guides

ROX Optical DO Sensor FAQs

6-Series Sonde Calibration, Maintenance & Troubleshooting Tips

Sonde Connector & Cable Field Reconditioning Procedure

6-Series pH Sensors Overview

Recommended Procedures for Use of YSI Water Quality Monitoring Instruments during Oil Spills

Specification Sheets

Power and Communication System (PACS)

YSI 6136 Turbidity Sensor

YSI Rhodamine Sensor

YSI V2 Sonde Upgrade Details

YSI Chlorophyll Sensor

YSI 6820 and 6920 V2 Sonde Specifications

YSI 6131 and 6132 Blue-Green Algae Sensors

YSI ROX Optical Dissolved Oxygen Sensor

Catalogs & Brochures

Groundwater Applications & Capabilities

Aquaculture Applications, Capabilities & Solutions

Español - Piscicultura Aplicaciones, Competencia y Soluciones

Monitoring Systems that Deliver Better Results from YSI Integrated Systems

Dissolved Oxygen Case Studies & Solutions

Source Water Monitoring - Applications, Capabilities & Solutions

Water Monitoring Solutions

6-Series Multiparameter Water Quality Sondes

Français - Sondes multiparamètres série 6 surveillance des eaux

Deutsch - 6-Serie Multiparameter Wasserqualitäts-Messsonden

Japanese - YSI 6シリーズ 多項目水質モニター

Storm Water Monitoring Kits

News Briefs

6-Series Anti-Fouling Kits Prevent Biofouling, Extend Long-Term Deployments

Application Notes

Water Quality Is Key to the Success of Cardiff Bay Restoration

Employing Best Monitoring Practices to Reduce Runoff

River Quality Protected during Tyne Tunnel Construction Project

Catchment Monitoring Network Protects Thames River

Imposed Water Quality Conditions with Drought Permits

YSI Multiparameter Instruments Assist in Storm Water and Combined Sewer Overflow Monitoring

Maine Companies Partner to Protect Aquatic Life with YSI Integrated Systems

Drinking Water Monitoring with YSI Instruments and Systems

Monitoring Long-term Source Water Trends with the YSI 6500

Industrial Pretreatment Made More Efficient, Representative through the Use of YSI Technology

Technical Notes

Connecting 6-series Sondes to a PC via USB

Deployment and Data Quality Assurance Tips

YSI 6562 Rapid Pulse™ Dissolved Oxygen Probe Membrane Maintenance

General O-Ring Care and Maintenance

Care, Maintenance, and Storage of YSI 6-Series Probes and Sondes

MCERTS Certifications

MCERTS - YSI 6820/6920 Sondes

Compliance Certifications

YSI Instruments EPA Compliance Guide

Webinars

Archived Webinar:
Making Better Turbidity Measurements in Ambient Water

Original Broadcast: November 4, 2010 —1-2 PM EDT (US)

 

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		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 fluorescence 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 water quality 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.
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		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.
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		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.
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		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.
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		Sensor Adapter Kit Expand your water quality monitoring to include hydrocarbons, oil, or CDOM with the YSI Sensor Adapter and Turner Cyclops-7 submersible sensors. The YSI 202400 Sensor Adapter expands water quality monitoring to include third-party analog output sensors. In addition to monitoring for Temperature, Conductivity, pH, Dissolved Oxygen, Turbidity, Blue-Green Algae, and Chlorophyll, 6-Series sondes can measure hydrocarbons, oil in water, and other parameters from the Turner Cyclops-7® submersible sensor line.
		Turbidity Calibration Solutions YSI turbidity solutions calibrate your instruments for maximum accuracy. Extremely accurate and stable solutions.