Engineered specifically for aquaculture applications, but at home in any Modbus system, the optical dissolved oxygen (ODO) sensor can be used to ensure adequate oxygen levels for your livestock or for improved energy efficiency. With YSI’s ODO RTU (Remote Terminal Unit), you’ll benefit from reduced costs, less maintenance, and better data.
ODO RTU utilizes the most advanced DO technology and can be connected anywhere without the need for special connectors. Additional inputs for barometric pressure and salinity are used to accurately calculate the DO% and mg/L. ODO RTU is also available with built-in conductivity measurement to automatically compensate for salinity.
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Key Benefits
Smarter Sensors
Industry-leading optical dissolved oxygen provides higher accuracy readings with less maintenance
Seamless Integration
Modbus communication integrates directly to the PLC or data logger you already have without additional software
Automatic Compensation
An optional built-in conductivity sensor automatically compensates for salinity - removing the guesswork
Less Maintenance, Long Warranty
2-year cable and probe warranty with user-replaceable DO cap
Not for use with the ProSolo or ProODO handheld meters.
Communication
Modbus/RS485 (4 wire)
Default Baud Rate
9600 (user programmable)
Dissolved Oxygen (Optical luminescence) Units
Range 0 to 500%, 0 to 50 mg/L
Accuracy 0 to 200%: ±1% of reading or
1% saturation, whichever is greater;
200 to 500%: ±8% of reading;
0 to 20 mg/L: ±0.1 mg/L
or 1% of reading, whichever is greater;
20 to 50 mg/L: ±8% of reading
Resolution 0.01 mg/L and 0.1 %, or
0.1 mg/L and 1% (auto-adjusted based on range)
Power
10 V to 16 V DC, 15 mA max
Size
2.46 cm diameter,
Cable options for 1, 4, 10, 20, 30, 50, and 100 m lengths
Temperature (Thermistor) Units
Range –5 to 70°C (-5 to 50°C; DO compensation range for mg/L )
Accuracy ±0.2°C
Resolution 0.1°C or 0.1°F (auto-adjusted based on range)
Warranty
2 years on cable, probe, and ODO sensor cap
Additional Conductivity Specifications
Conductivity (Four nickel electrode cell) Units: μS/cm, mS/cm
Range 0 to 200 mS/cm
Accuracy 0 to 100 mS/cm ±0.5% of reading or 0.001 mS/cm, whichever is greater; 100 to 200 mS/cm ±1.0% of reading
Resolution 0.001, 0.01, or 0.1 μS (range dependent)
Salinity Units:
μS/cm, mS/cm
Range 0 to 70 ppt
Accuracy ±1.0% of reading or ±0.1 ppt, whichever is greater
Resolution 0.01 ppt
Dissolved Oxygen Solubility Table | XA00055
Environmental Dissolved Oxygen Values Above 100 Percent Air Saturation