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Turbi-Tech 2000HR Suspended Solids Sensor

Self Cleaning Sensor for Suspended Solids and Turbidity Monitoring

The Turbi-Tech 2000HR 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’s) typically run with MLSS values in the region of 8,000 to 14,000 mg/l. 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. Furthermore, the membrane tanks provide extremely space efficient solids separation and do not require a clarifier in the system.

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  • Overview
  • General Specification
  • Measurement Specification
  • Ordering Information & Spare Parts

The Turbi-Tech 2000HR sensor is suitable for monitoring solids in higher ranges than the standard LA version of the sensor due to it’s shorter path length. The large optical surface and sample volume combine to ensure that the sensor is providing information that is reliable and representative of the solids present in the process. Deposits of fats and grease on the sensing area do not prevent the sensor from measuring unlike sensors with small optical surfaces.

In addition the sensor incorporates a self cleaning mechanism that ensures that the optical surfaces are kept clean at all times, the cleaning system is designed to avoid problems with ragging and does not smear the optical system. The cleaning system ensures that manual intervention on a routine basis is not required, the sensor should simply be checked as part of general site housekeeping. The Turbi-Tech 2000HR Sensor uses Infrared Light at 860 nm and operates using the Light Attenuation Principle. The cleaning mechanism uses a polyurethane wiper seal, backed by 2 Nitrile ‘H’ Rings that finish the cleaning process. The Nitrile seals can be exchanged for Viton if the process media dictates. The cleaning process is automatically initiated by the 7200 Monitor at a user determined frequency. The cleaning process takes only 90 seconds, which means that the sensor is available for 99.5% of the time with a 5 hourly cleaning cycle.

Dimensions (hxwxd)Ø80mm, 470 mm long
Weight2.2 kg
Protection ClassIP68
Enclosure MaterialBlack Acetal Co-Polymer, 316 Stainless Steel, Glass
Seal MaterialPolyurethane, Nitrile, with option of Viton
Cable EntryIntegral Cable Gland
Cable Length10 metres standard, 100 metres maximum
Interface to Monitor
Power Supply12 VDC from Monitor
Sensor OutputPWM
Environmental Data
Operating/Storage Temperature0 to 50ºC
Pressure Rating10 mWC
ServiceSeal Service every 3500 cleans (application dependent)
CalibrationThe sensor is inherently stable, calibration should be carried out to suit the application. Our recommendation is every 6 months.
Measurement Characteristics
Principal of OperationLight Attenuation/Scatter
Wavelength860 nm Infrared
AccuracyBetter than +/-5% of reading on real sample
ResolutionDependent on range setting, typically +/-2% of reading
Response Time0.5 seconds damping provided by monitor
FlowrateNot affected by flowrate, avoid deadspots and extreme turbulence
UnitsUser Selectable mg/l, g/l, ppm, %SS, NTU
Maximum Range0-30,000 mg/l
Minimum Range0-10,000 mg/l
The actual measuring range will depend on the nature of the sample being monitored, for processes normally operating at 10,000 mg/l or more should consider use of the HR version of this sensor.
Processes that use carbon will provide higher than expected readings and the HR version of the sensor should be used.
Part NumberDescription
220600Turbi-Tech 2000HR Sensor (Cable Length: 10 metres, Nitrile Seals)
222635Turbi-Tech 2000HR Sensor (Cable Length: 20 metres, Nitrile Seals)
Mounting Shafts
152703FlexTech Mounting Shaft (TurbiTechw² LA/HR/LS, 1.0 metres)
152701FlexTech Mounting Shaft (TurbiTechw² LA/HR/LS, 1.0 metres)
152705FlexTech Mounting Shaft (TurbiTechw² LA/HR/LS, 1.0 metres)
Mounting Brackets
223980FlexTech Sensor Bracket (Handrail Ø 43 to 60.3 mm)
224567FlexTech Sensor Bracket Extension Assembly (500 mm Long, Handrail Ø 43 to 60.3 mm)
Seal Service Pack
220607Seal Service Pack - Turbi-Tech 2000HR, TurbiTechw² HR, Nitrile H RIngs
220608Seal Service Pack - Turbi-Tech 2000HR, TurbiTechw² HR, Viton H RIngs

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