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TurbiTechw² LR Turbidity Sensor

The TurbiTechw² LR Sensor has been specifically designed to monitor final treated, portable and filter water. The sensor is extremely sensitive and is capable of discriminating changes in Turbidity of less than 0.1 FTU. The 90º light scatter monitoring technique makes the sensor sensitive to a wide range of particle sizes, from colloidal material through to larger particles and raw waters and the large mineral particles sometimes found in distribution samples.

The TurbiTechw² LR Sensor complies with the internationally recognised ISO7027 standard for turbidity measurement. The unique sensor design captures stray light which ensures an ultra stable zero point, this is combined with an automatic self-cleaning mechanism that prevent the build up of fouling within the sample chamber. The measurement system includes a self monitoring loop that compensates for changes in optical performance.

For specialist advice call:

+44 (0)1726 879800

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View Related Product Documents
  • Overview
  • General Specification
  • Measurement Specification
  • Ordering Information & Spare Parts

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

Dimensions (hxwxd)440 x 200 x 200 mm
Weight4.5 kg
Protection ClassIP68
Enclosure MaterialBlack Acetal Co-Polymer, Polypropylene
Seal MaterialNitrile
Cable EntryIntegral Cable Glands
Cable Length5 metres standard, 100 metres maximum
Process ConnectionsInlet and Drain: 1/2" BSP with 12 mm hosetail
Outlet: 1/4" BSP with 8 mm hosetail
Interface to Monitor
Power Supply12 VDC from Monitor
Sensor OutputModTechw², RS485
Environmental Data
Operating/Storage Temperature0 to 50ºC
Pressure Rating2 Bar
ServiceWiper and desiccant replacement every year (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 Operation90° Light Scatter
ISO 7027 Compliant
AccuracyBetter than +/-2% of reading on real sample
ResolutionDependent on range setting, typically +/-2% of reading
Display Resolutionsee 7300w² Monitor
Response Time90% of step change in 2 minutes at 1 litre/min
Flowrate0.5 to 5 litres/minute
UnitsUser Selectable FTU, NTU
Low Range Version30 NTU
High Range Version500 NTU
It has been asusmed that 1 FTU = 1 NTU for the purposes of these range statements
Part NumberDescription
225125TurbiTechw² LR Sensor (0-30 FTU, Cable Length: 5 metres, Nitrile Wiper), inc Dry Cal Standard
227386TurbiTechw² LR Sensor (0-500 FTU, Cable Length: 5 metres, Nitrile Wiper), inc Dry Cal Standard
220372De-Bubbler with Auto Air Vent
Service Pack
201010WaterWatch2310/WaterWatch2970.TurbiTechw² LR/ColTechw² - Replacement Cleaner Arm/Wiper Blades (pack of 3)

7300w2 Monitor

7300w² Monitor

The core product in the WaterWatch² range - the 7300w² Monitor provides all the user interface and system configuration

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TurbiTechw² Optics

TurbiTechw² LS Suspended Solids and Turbidity Sensor

Self Cleaning Suspended Solids or Turbidity sensor designed for discharge and inlet monitoring

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De-Bubbler for TurbiTechw² LR and ColTechw² Sensors

De-Bubbler for use with TurbiTechw² LR and ColTechw² Sensors

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To speak with one of our specialist advisors, call +44 (0)1726 879800
or complete our Online Enquiry