ORP and Temperature Sensor

redox/orp temperature sensorWaterTechw² Redox8000 Redox/ORP Sensor

The WaterTechw² Redox8000 Sensor has been designed to provide highly reliable Redox and Temperature measurements. The sensor uses a flat surfaced electrode which includes an extended reference path, these features combine to provide an extremely robust Redox measurement, suitable for use in surface water, waste water and drinking water applications.

The electrode uses field proven flat surface, self-cleaning technology. The reference system is enhanced by the Extended Path Reference (ERP) design which provides a complex path to protect the reference in the presence of interacting ions such as proteins, silver and sulphides.

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  • Measurement of Redox or ORP is useful in many water, wastewater and industrial water processes, for example the control of disinfection processes such as chlorination in cooling towers. The electrode design is very similar to the equivalent pH electrode (WaterTechw² pH8000), the difference being that the pH glass is replaced with a Platinum band. The measurement of the oxidation-reduction potential (Redox or ORP) of an aqueous solution is a broad, non-specific indicator of the chemical activity of the solution. In drinking water processes Redox measurement is a highly effective tool for controlling chlorine and ozone treatment, it provides an excellent indicator of the ability of the disinfectant to remove contaminants from the water.

    In wastewater processes Redox measurement has the ability to provide an indication of the condition of the anoxic and anaerobic zones within an activated sludge (ASP) plant’s aeration tanks, this is beyond what is possible with the far more commonly used Dissolved Oxygen measurements. The measurement can also be used as an indicator of the load entering a processing plant, giving an early warning of potential control problems.

  • Physical
    Dimensions (hxwxd) Ø60mm, 270 mm long
    Weight 0.95 kg
    Protection Class IP68
    Enclosure Material PVC Body, pH Glass
    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 70ºC
    Location Indoor/Outdoor
    Maintenance
    Service Electrode Replacement

    Periodic cleaning is required at a frequency 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 every 6 months.

  • Physical
    Dimensions (hxwxd) 235 x 310 x 155 mm
    Weight 0.35 kg
    Protection Class IP68
    Enclosure Material Black Acetal Co-Polmer with Stainless Steel Mounting PLate
    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 70ºC
    Location Indoor/Outdoor
    Maintenance
    Service Electrode Replacement

    Periodic cleaning is required at a frequency 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 every 6 months.

  • Measuring Characteristics
    Principal of Operation Combined Electrode (pH/reference) – Ag/AgCl)
    Double Junction ERP Reference
    Accuracy +/- 2 mV
    Resolution 1 mV
    Display Resolution see 7300w² Monitor
    Range -1,999 to 1,999 mV
    Temperature
    Principle NTC
    Range 0 – 50°C
    Accuracy +/- 0.5°C
    Resolution 0.01°C

  • Part Number with Description
    224689 WaterTechw² Redox8000 Flowcell Assembly includes Redox Electrode and Temperature Sensor (pH Range: -1999 to 1999 mV, Temperature Range: 0-50°C, Cable Length: 2 metres)
    224731 WaterTechw² Redox8000 Dip Assembly includes Redox Electrode and Temperature Sensor (pH Range: -1999 to 1999 mV, Temperature Range: 0-50°C, Cable Length: 10 metres)
    224732 WaterTechw² Redox8000 Dip Assembly includes Redox Electrode and Temperature Sensor (pH Range: -1999 to 1999 mV, Temperature Range: 0-50°C, Cable Length: 20 metres)
    Mounting Shaft with Self Clean Option
    224726 FlexTech Shaft Assembly with Flexible Coupling (WaterTechw² pH8000/Redox8000 Sensor, 1.0 metres)
    224728 FlexTech Shaft Assembly with Flexible Coupling (WaterTechw² pH8000/Redox8000 Sensor, 2.0 metres)
    224730 FlexTech Shaft Assembly with Flexible Coupling (WaterTechw² pH8000/Redox8000 Sensor, 3.0 metres)
    Mounting Shaft without Self Cleaning
    224720 FlexTech Shaft Assembly (WaterTechw² pH8000/Redox8000 Sensor, 1.0 metres)
    224722 FlexTech Shaft Assembly (WaterTechw² pH8000/Redox8000 Sensor, 2.0 metres)
    224724 FlexTech Shaft Assembly (WaterTechw² pH8000/Redox8000 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 Electrode
    224688 WaterTechw² Redox8000 Electrode (-1999 to 1999 mV, TNC Connector)



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