Optical Sensor for Dissolved Oxygen

optical sensor for dissolved oxygenOxyTechw² RDO Pro-X Dissolved Oxygen Sensor

The OxyTechw² RDO Pro-X Sensor uses the latest optical technology for measuring dissolved oxygen (DO) in demanding wastewater, drinking water, industrial effluent and surface water environments.

The sensor uses optical sensing techniques that provide a fast response and do not need a flowing sample to operate. There is no need for routine calibration, enabling manual intervention to be kept to an absolute minimum. Periodic validation of the measurement can be done as part of standard quality assurance performed by the operator. The sensor uses an extended life cap that does not have a finite life, though replacement is recommended every two years. When replacement of the cap is required the operation takes only a few minutes with no need to enter complex set up codes and no need to re-calibrate.

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  • The need for manual cleaning of the sensor is kept to a minimum through use of Partech’s FlexTech mounting system which places the sensor below the surface of the tank, away from the floating fats and grease whilst keeping the sensor face moving to prevent the build up of a biofilm.

    The sensor is part of the WaterWatch² family and works with our 7300w² Monitor. It can also be combined with our TurbiTechw² LA sensor to provide an extremely cost effective package for controlling activated sludge plants.

  • Physical
    Dimensions (hxwxd) Ø47mm, 203 mm long
    Weight 0.8 kg
    Protection Class IP68
    Enclosure Material Body – ABS, Titanium Temperature Probe with Polyurethane coated cable

    Cap – ABS, Polycarbonate/Polymethyl/methylacrylate
    Cable Entry Integral Cable Gland
    Cable Length 10 metres standard, 100 metres maximum

    Interface to Monitor
    Power Supply 12 VDC from Monitor
    Sensor Output ModTechw², RS485

    Environmental Data
    Operating/Storage Temperature 0 to 50ºC
    Location Indoor/Outdoor
    Pressure Rating 210 mWC
    Flow No flow necessary
    Service The optical cap for the sensor should be replaced every 24 months

    Periodic cleaning is required at a frequncy determined by the application. Our self cleaning shaft option is highly recommended, this eliminates manual cleaning between calibrations.
    Calibration The sensor is inherently stable, calibration should be carried out to suit the application. Our recommendation is yearly

  • Measuring Characteristics
    Principal of Operation Blue/Red Luminescence Quenching
    Iron/Silver Electrode Combination
    Light Source Blue LED
    Accuracy +/- 0.1 mg/l on 0-8 mg/l range
    +/- 0.2 mg/l on 8-20 mg/l range
    +/- 10% reading 20 to 50 mg/l
    Resolution 0.01 mg/l
    Display Resolution see 7300w² Monitor
    Response Time T90 < 45 seconds, T95 < 60 seocnds @ 25°C Flowrate 1 cm/second Units mg/l, ppm, %Sat Range 0-50 mg/l (ppm) 0-200 %Sat Temperature Measurement Thermistor Temperature Range 0 to 50°C Temperature Accuracy +/- 0.1°C Temperature Resolution 0.01°C

  • Part Number with Description
    226770 OxyTechw² RDO Pro-X Sensor (Range 0-50 mg/l, Cable Length: 10 metres)
    226771 OxyTechw² RDO Pro-X Sensor (Range 0-50 mg/l, Cable Length: 20 metres)
    Mounting Shaft with Self Clean Option
    226665 FlexTech Shaft Assembly with Flexible Coupling (OxyTechw² RDO Pro-X Sensor, 1.0 metres)
    226666 FlexTech Shaft Assembly with Flexible Coupling (OxyTechw² RDO Pro-X Sensor, 2.0 metres)
    226667 FlexTech Shaft Assembly with Flexible Coupling (OxyTechw² RDO Pro-X Sensor, 3.0 metres)
    Mounting Shaft without Self Cleaning
    226661 FlexTech Shaft Assembly (OxyTechw² RDO Pro-X Sensor, 1.0 metres)
    226662 FlexTech Shaft Assembly (OxyTechw² RDO Pro-X Sensor, 2.0 metres)
    226663 FlexTech Shaft Assembly (OxyTechw² RDO Pro-X Sensor, 3.0 metres)
    Mounting Brackets
    223980 FlexTech Sensor Bracket (Handrail Ø40 to 60.3 mm)
    224567 FlexTech Extension Bracket Assembly (500mm Long, Handrail Ø40 to 60.3 mm)
    strong>Replacement Cap
    226668 OxyTechw² RDO Pro-X Cap

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