Turbidity Sensor

turbidity sensorTurbiTechw² LR Turbidity Sensor

The TurbiTechw² HR Sensor has been specifically designed for use in wastewater treatment systems where high levels of suspended solids are desirable in the aeration phase. Membrane Bio Reactors (MBR) typically run with MLSS values in the region of 8,000 to 14,000 mg/l. High MLSS concentrations promote numerous process benefits, including stable operation, complete nitrification, and reduced biosolids production reducing biological volume requirements (and associated footprint) to only 20-30 percent of conventional biological processes.

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  • The sensor requires very little maintenance, with no special tools or training required. Calibration can be carried out against either a wet turbidity standard or using the dry calibration reference cell that is supplied with every sensor. The reference cell provide an extremely easy, repeatable method of checking the performance of the sensor without the cost and inherent errors associated with chemical standards

  • Physical
    Dimensions (hxwxd) 440 x 200 x 200 mm
    Weight 4.5 kg
    Protection Class IP68
    Enclosure Material Black Acetal Co-Polymer, Polypropylene
    Seal Material Nitrile
    Cable Entry Integral Cable Glands
    Cable Length 5 metres standard, 100 metres maximum
    Process Connections Inlet and Drain: 1/2″ BSP with 12 mm hosetail
    Outlet: 1/4″ BSP with 8 mm hosetail

    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 1 Bar
    Maintenance
    Service Wiper and desiccant replacement every year (application dependent)
    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 Light Attenuation/Scatter
    Wavelength 860 nm Infrared
    Accuracy Better than +/-5% of reading on real sample upto 30,000 mg/l
    Resolution Dependent on range setting, typically +/-2% of reading
    Display Resolution see 7300w² Monitor
    Response Time 90% of step change in 2 minutes at 1 litre/min
    Flowrate 0.5 to 5 litres/minute
    Units User Selectable FTU, NTU
    Low Range Version 0 – 5 to 0 – 30 NTU
    High Range Version 0 – 50 to 0 – 500 NTU
    It has been asusmed that 1 FTU = 1 NTU for the purposes of these range statements

  • Part Number with Description
    223887 TurbiTechw² LR Sensor (Range 0-5 to 0-30 FTU, Cable Length: 5 metres, Nitrile Wiper), inc Dry Cal Standard
    223889 TurbiTechw² LR Sensor (Range 0-50 to 0-500 FTU, Cable Length: 5 metres, Nitrile Wiper), inc Dry Cal Standard
    Accessory
    220372 De-Bubbler with Auto Air Vent
    Service Pack
    201010 WaterWatch2310/WaterWatch2970.TurbiTechw² LR/ColTechw² – Replacement Cleaner Arm/Wiper Blades (pack of 3)



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