6-Series Multiparameter Sondes
Designed for in situ monitoring and profiling, and ideal for long-term deployments requiring the most complete water quality data record.
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Have a question about your 6-Series Multiparameter Sondes? Check out the support page with resources compiled just for you.
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We have a large pool of water quality and hydrology instruments available to you for rental.
Tips, FAQs & Guides
Specification Sheets
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600OMS Optical Monitoring Sonde
Catalogs & Brochures
Rentals & Services from Hydrodata
6-Series Multiparameter sondes
Case Studies
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Water Intake Monitoring System Provides Reliable Data while Reducing Frequency of Site Visits
Imposed Water Quality Conditions with Drought Permits
Thames Water Employs Reservoir Profiler to Reduce Costs
Dubai Municipality Utilizes YSI Real-time Water Quality Monitoring Instrumentation
The 6 series instruments measures up to 15 parameters including: pH, ORP, temeprature, conductivity, salinity, depth, dissolved oxygen, turbidity, chlorophyll, and blue-green algae; Additional calculated parameters include total dissolved solids, resistivity, and specific conductance.
Utilize YSI’s new optical sensor design and anti-fouling wiper control for improved reliability during extended deployments.
- Self-cleaning optical sensors with integrated wipers remove biofouling and maintain high data accuracy
- Field-replaceable sensors make trips to the field quick
- Optimal power management and built-in battery compartment extends in situ monitoring periods
Find helpful information about water quality monitoring and long-term deployments at YSI's True Cost of Data web site and forum.
| 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, no depth Length, with depth Weight |
3.5 in, 8.9 cm 19.6 in, 49.8 cm 21.6 in, 54.9 cm 7 lbs, 3.18 kg (batteries installed, with depth) |
| Power | External Internal |
12 V DC 8 C-size alkaline batteries |
| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 | Deep Medium Shallow Vented Level |
0 to 656 ft, 200 m 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 0.001 ft, 0.001 m |
±1 ft, ±0.3 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** |
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| 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 |
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| 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 |
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| Chloride•••• | 0 to 1000 mg/L | 0.001 to 1 mg/L (range dependent) |
±15% of reading or 5 mg/L, whichever is greater |
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| Rhodamine• | 0-200 μg/L | 0.1 μg/L | ±5% reading or 1 μg/L, whichever is greater |
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| • 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 6600 V2-2 (two optical ports 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). |
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| *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 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. | ||||