ODO Sensors for Monitoring and Control

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Optical Dissolved Oxygen and Temperature Sensor for Aquaculture Continuous Monitoring and Control

  • Overview

    Engineered specifically for aquaculture applications, the optical dissolved oxygen sensor can be used with the 5500D MultiDO monitor for process control to ensure adequate oxygen levels for your livestock or for improved energy efficiency. With YSI’s ODO® optical dissolved oxygen technology you’ll benefit from reduced costs, less maintenance and better data. The ODO sensors require no membrane changes, no electrode cleaning, no stirring for accurate data and less frequent calibrations.

    You can also incorporate the DO sensor directly with your PLC via the RS485 communication. Additional inputs for barometric pressure and salinity are used to accurately calculate the DO % and mg/L.


    • Non-consumptive luminescent method eliminates stirring
    • No warm-up time required
    • Smart sensor retains calibration in the probe
    • Compatible with 5500D MultiDO monitor and the IOEM and REM expansion modules
    • User-replaceable, low maintenance DO cap with +1 year life
    • Tank-side calibration when used with the YSI 5500D monitor
    • Ability to connect to PLC
    • Communication via RS485
    • 2-year cable and probe warranty


    • Recirculating systems
    • Raceways
    • Ponds
    • Sea cages
    • Live haul
    • Aquariums
    • Research
    • Tanks

  • Specifications

    0 to 200% air saturation ±1% of the reading or ±1% air saturation, whichever is greater; 200 to 500% air saturation ±10% of the reading; 0 to 20 mg/L ±0.1 mg/L or ±1% of reading, whichever is greater; 20 to 50 mg/L ±10% of the reading; ±0.2 ºC

    Certifications CE, RoHS, WEEE, C-Tick, VCCI, IP-67, Made in USA
    Connectivity / Communications RS485, proprietary communication
    Equipment used with 5500D
    Measurement Range

    0 to 500% air saturation; 0 to 50 mg/L; -5 to 70 oC (23 to 158 oF)

    Parameters Measured

    Dissolved Oxygen (optical), Temperature

    Power 6.3 VDC at 10-20 mA

    0.1% air saturation; 0.01 or 0.1 mg/L (auto scaling); 0.1 ºC

    Response Time 90% of reading in 25 seconds; 95% of reading in 45 seconds (typical response times with no stirring; sample movement will improve typical response times)

    Length: 19 cm (7.5 in); Diameter 2.4 cm (0.95 in)

    Storage Temperature -20 to 70ºC (-4 to 158ºF)

    2-years cable and probe; 1-year sensor cap (actual sensor cap life may be longer)

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