pH Sensor

ph sensorWaterTechw² pH8000 pH Sensor

The WaterTechw² pH8000 Sensor has been designed to provide highly reliable pH and temperature measurements. The sensor uses a flat surfaced electrode which includes an extended reference path, these features combine to provide an extremely robust pH 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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  • The WaterTechw² pH8000 sensor has been designed to provide highly reliable operation across the range of drinking water and wastewater applications. The flat faced electrode included the latest innovations in double junction reference with the ERP reference path.

    For installation in applications where gross fouling is anticipated we recommend that the sensor is installed using our specially designed mounting system, with a flexible joint in the mounting shaft.
    The flexible joint moves the sensor in the process, reducing bio-fouling and allowing rags to fall away from the assembly. This motion is similar to that achieved by using a floating ball assembly, with the added advantage of placing the sensor below the surface of the liquid. In applications where fouling is not expected or where there is insufficient space alternative mounting arrangements are available.

  • 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 +/- 0.05 pH
    Resolution 0.01 pH
    Display Resolution see 7300w² Monitor
    Range 0 – 14 pH
    Temperature
    Principle NTC
    Range 0 – 50°C
    Accuracy +/- 0.5°C
    Resolution 0.01°C

  • Part Number with Description
    225936 WaterTechw² pH8000 Flowcell Assembly includes pH Electrode and Temperature Sensor (pH Range 0-14 pH, Temperature Range: 0-50°C, Cable Length: 5 metres)
    224717 WaterTechw² pH8000 Dip Assembly includes pH Electrode and Temperature Sensor (pH Range 0-14 pH, Temperature Range: 0-50°C, Cable Length: 10 metres)
    224718 WaterTechw² pH8000 Dip Assembly includes pH Electrode and Temperature Sensor (pH Range 0-14 pH, 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
    224459 WaterTechw² pH8000 Electrode (0-14 pH, TNC Connector)



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