Self Cleaning Sensor for Suspended Solids and Turbidity Monitoring

The TurbiTechw² LS Sensor is designed to monitor the levels of suspended solids or turbidity typically found in final effluent from municipal and industrial wastewater treatment plants. It is also great at monitoring solids in the intake to both effluent and drinking water treatment processes.

Monitoring of these key parameters requires sensors that are reliable and accurate, the TurbiTechw² LS meets this requirement perfectly. The large optical surfaces and sample volume ensure that the information provided by the sensor is both representative of the process and tolerant of fouling. 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.

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Overview

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btn margtop20">Related Documents

TurbiTechw² Overview PDF

TurbiTechw² LS Sensor Datasheet PDF

TurbiTechw² LS/LA/HR Sensor Instruction Manual PDF

Mounting Shaft – TurbiTechw² LA/LS/HR and Turbi-Tech 2000LA/LS/HR PDF

FlexTech Sensor Bracket (PN223980) Datasheet PDF

FlexTech Sensor Bracket (PN224567) Datasheet PDF

User List – Final Effluent Suspended Solids/Turbidity PDF

Guide Tube Mounting – TurbiTech Sensors PDF

General Specification

Measurement Specification

Ordering Information & Spare Parts

The TurbiTechw² LS Sensor employs infrared light at 860 nm using the 90º Light Scatter principle in accordance with ISO7027 (2000). The cleaning process is automatically initiated by the 7300w² 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 6 hourly cleaning cycle.

Physical
Dimensions (hxwxd)	Ø80mm, 470 mm long
Weight	2.2 kg
Protection Class	IP68
Enclosure Material	Black Acetal Co-Polymer, 316 Stainless Steel, Glass
Seal Material	Polyurethane, Nitrile, with option of Viton
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	1 Bar or 14.5 psi
Maintenance
Service	Seal Service every 3500 cleans (application dependent)
Calibration	The sensor is inherently stable, calibration should be carried out to suit the application. Our recommendation is every 6 months.

Measurement Characteristics
Principal of Operation	90° Light Scatter ISO 7027 Compliant
Wavelength	860 nm Infrared
Accuracy	+/-5% of reading or 1NTU whichever is greater
Resolution	Dependent on range setting, typically +/-2% of reading
Display Resolution	see 7300w² Monitor
Response Time	0.5 seconds damping provided by monitor
Flowrate	Not affected by flowrate, avoid deadspots and extreme turbulence
Units	User Selectable mg/l, g/l, ppm, %SS, FTU, NTU
	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 Number	Description
223510	TurbiTechw² LS Sensor (Range: 0-500 FTU, Cable Length: 10 metres, Nitrile Seals)
223875	TurbiTechw² LS Sensor (Range: 0-500 FTU, Cable Length: 20 metres, Nitrile Seals)
223876	TurbiTechw² LS Sensor (Range: 0-500 FTU, Cable Length: 10 metres, Viton Seals)
223877	TurbiTechw² LS Sensor (Range: 0-500 FTU, Cable Length: 20 metres, Viton Seals)
226447	TurbiTechw² LS Sensor (Range: 0-100 FTU, Cable Length: 10 metres, Nitrile Seals)
225455	TurbiTechw² LS Sensor (Range: 0-1000 FTU, Cable Length: 10 metres, Nitrile Seals)
223880	TurbiTechw² LS Sensor (Range: 0-1000 FTU, Cable Length: 20 metres, Nitrile Seals)
223879	TurbiTechw² LS Sensor (Range: 0-1000 FTU, Cable Length: 10 metres, Viton Seals)
223881	TurbiTechw² LS Sensor (Range: 0-1000 FTU, Cable Length: 20 metres, Viton Seals)
Mounting Shafts
152703	FlexTech Mounting Shaft (TurbiTechw² LA/HR/LS, 1.0 metres)
152701	FlexTech Mounting Shaft (TurbiTechw² LA/HR/LS, 1.0 metres)
152705	FlexTech Mounting Shaft (TurbiTechw² LA/HR/LS, 1.0 metres)
Mounting Brackets
223980	FlexTech Sensor Bracket (Handrail Ø 43 to 60.3 mm)
224567	FlexTech Sensor Bracket Extension Assembly (500 mm Long, Handrail Ø 43 to 60.3 mm)
Seal Service Pack
156260	Seal Service Pack - TurbiTechw² LA/LS, Nitrile H RIngs
156261	Seal Service Pack - TurbiTechw² LA/LS, Viton H RIngs