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.
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 |
| Maintenance | |
| 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 |
| Measurement 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 | 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) |
| Replacement Cap | |
| 226668 | OxyTechw² RDO Pro-X Cap |
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Calibration Aid for the OxyTechw² RDO -Pro-X Sensor
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Replacement cap for OxyTechw² RDO-Pro-X Sensor
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