6-Series

Multiparameter Sondes

6600 V2

6600EDS V2

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600LS

600DW

6920DW

650MDS

6500 Process Monitor

Anti-Fouling Solutions

6-Series Software

EcoWatch

AQUARIUS Time-Series

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All YSI Product Accesories - Sensors, Cables, Calibration Solutions & more...

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Ammonia/Ammonium

Blue-Green Algae

BOD (Biochemical Oxygen Demand)

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Chlorophyll

Conductivity

Depth

Dissolved Oxygen

Free Chlorine

Level

Nitrate

ORP / Redox

Photosynthetic Active Radiation (PAR)

pH

Resistivity

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Total Dissolved Solids (TDS)

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85 DO/Conductivity

63 pH/Conductivity

60 pH

52/58 Lab/Field DO

55 Dissolved Oxygen

30 Conductivity

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Level Scout Level & Temp

 

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5000/5100 BOD/DO

3200 Conductivity

3100 Conductivity

 

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ORP15 - ORP Pen

DO200 - DO

EC300 - Conductivity

9300/9500 Photometer

 

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6920 V2

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Compact Sonde for Unattended Monitoring

 

The YSI 6920 V2 sonde is an economical logging system, ideal for long-term in situ monitoring and profiling. Two versions:

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

Find a Distributor

YSI has Authorized Distributors all over the globe. View a map and find your closest contact for YSI 6920 V2 products and accessories.

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Get Support

Have a question about your YSI 6920 V2? Check out the support page with resources compiled just for you.

Contact Technical Support

Product Service Centers

Want to return a product for service? Here you’ll find authorized service centers and instructions on how to send in your YSI 6920 V2.

Product Service

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.

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

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

News Briefs

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

Application Notes

River Quality Protected during Tyne Tunnel Construction Project

Catchment Monitoring Network Protects Thames River

Imposed Water Quality Conditions with Drought Permits

Ferry-linked Water Monitoring System Becomes New Model for United States

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

 

YSI 3682 Zobell ORP Calibration Solution
 

3682 Zobell ORP Calibration Solution

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

YSI pH 4, 7 and 10 buffers
 

3824 Assorted pH Buffers Case

Various pH buffers for pH probe calibration.

YSI Confidence Solution to Check pH, ORP, Conductivity
 

5580 Confidence Solution®

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

YSI 5775 Standard Stretch-Style DO Membranes
 

5775 Standard DO Membranes

YSI 5775 standard stretch-style dissolved oxygen membranes.

YSI 6-series field cable
 

6-Series Field Cables

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

6025 Chlorophyll Sensor
 

6025 Chlorophyll Sensor (6-Series)

Determine phytoplankton concentrations by detecting the flourescence from chlorophyll in situ.

Indoor-use adapter cable
 

6067B Adapter Cables

YSI 6-series sonde to RS-232 adapter. Indoor-use only.

Field cable to RS-232 adapter.
 

6095B Adapter Cable

YSI 6-series field cable to RS-232 adapter.

PC Interface cable for 650MDS.
 

6112 PC Interface Cable for 650MDS

MS-8 to pc serial port connector for 650MDS.

6130 Rhodamine Sensor
 

6130 Rhodamine Sensor (6-Series)

Detect accurate, in situ trace dye levels with the 6130 Rhodamine Sensor.

Blue-Green Algae Probe
 

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 Optical Turbidity Sensor
 

6136 Turbidity Sensor (6-Series)

Collect accurate, in situ measurement of turbidity in fresh, brackish, and sea water.

Optical probe wiper pad kit.
 

6144 Wiper Pads for Optical Sensors

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

YSI ROX Dissolved Oxygen Probe
 

6150 ROX ® Optical Dissolved Oxygen Sensor (6-Series)

Rugged and reliable optical dissolved oxygen sensor used with 6-Series sondes.

New 6155 membrane
 

6155 Membrane Kit for ROX Optical DO Sensor

Replacement membrane kit for 6150 ROX optical dissolved oxygen sensor (6-series sondes).

Zinc anode on 600 sonde.
 

6182 Zinc Anode Kit

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

YSI 6425 Antifouling Optical Chlorophyll Probe
 

6425 Anti-fouling Optical Chlorophyll Sensor (6-Series)

Copper-alloy anti-fouling optical chlorophyll sensor used with 6-Series sondes.

YSI Antifouling Optical Blue-green Algae Probe
 

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.

YSI 6436 Antifouling Optical Turbidity Probe
 

6436 Anti-fouling Optical Turbidity Sensor (6-Series)

Copper-alloy anti-fouling optical turbidity sensor used with 6-Series sondes.

YSI ROX Optical Dissolved Oxygen Probe - Copper Antifouling
 

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 and Temperature Sensor
 

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.

YSI Rapid Pulse Dissolved Oxygen Sensor
 

6562 Rapid Pulse Dissolved Oxygen Sensor

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

6570 Maintenance Kit
 

6570 Sonde Maintenance Kit

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

6624 Chlorophyll/Rodamine optical sensor wiper kit.
 

6624 Wiper Kit for Chlorophyll and Rhodamine Sensors

Replacement wipers for 6-series 6025 Chlorophyll probe or 6130 Rhodamine WT probe.

6625 optical wiper kit
 

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.

YSI chloride, ammonium, and nitrate sensors
 

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
 

6885 Sonde Weight Kit

Weight kit for 6820 or 6920 sondes.

6-Series Hard Case
 

6930 Rugged Carrying Case

A hard-sided carrying case ideal for all 6-Series sondes and systems.

Apply C-Spray to Conductivity-Temperature electrodes
 

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.

Roll of anti-fouling copper tape for YSI sensors and sondes
 

Anti-fouling Copper Tape

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

Anti-fouling Port Plug for YSI pH Sensors
 

Anti-fouling Sensor Port Plugs

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

Antifouling Screen for Conductivity-Temperature (CT) Sensor
 

Anti-fouling Sensor Screen

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

Copper Antifouling Sonde Guard for YSI 600OMS Sonde
 

Anti-fouling Sonde Guards

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

YSI Conductivity Solitions
 

Conductivity Calibration Solutions

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

YSI pH Probe (Guarded Glass Bulb) and Flat-glass pH Probe
 

pH Sensors (6-Series)

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

Turbidity Calibratoin Solutions
 

Turbidity Calibration Solutions

YSI turbidity solutions calibrate your instruments for maximum accuracy.

 

Form Object

 

 

 

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