- 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
The YSI 6920 V2 sonde is an economical water quality logging system, ideal for long-term in situ monitoring and profiling.
Real-time turbidity monitoring, dissolved oxygen monitoring, algae monitoring, and more.
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 |
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** |