Turbidity Sensor

The UniLux Turbidity Sensor is a low cost, compact sensor for monitoring real-time turbidity in natural and process waters with sampling frequencies up to 3 Hz. Available in two range options (100 FTU and 1000 FTU), UniLux Turbidity is suitable for a wide variety of applications, including dredge monitoring, environmental research, and integration with sondes and systems.

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Features & Applications


  • Highly sensitive miniature turbidity sensor
  • Two range options: 0-100 FTU or 0-1000 FTU
  • Low limits of detection and linear response across standard range
  • Real-time data output in FTU
  • User configurable sampling frequency from 0.1 Hz to 3 Hz
  • Robust ambient light rejection
  • Data display and logging with Hawk and Watchkeeper accessories


  • Turbidity, particle studies/gravimetric analysis
  • Process control (industrial feed meter indicators)
  • Reservoir monitoring
  • Profiling on CTDs and sondes
  • Coastal process monitoring
  • Dredge monitoring
  • Environmental impact assessment
  • Waste/recycled water quality monitoring
  • Sediment studies
  • Towed, moored or ROV deployments



Parameters Dynamic range Limit of detection
Turbidity 0 to 100 FTU (standard)
0 to 1000 FTU (extended)
<0.02 FTU
<0.02 FTU


Size Ø 26.5 mm x 140 mm (including connector)
Weight in air 100 g
Pressure housing Acetal C
Depth rating 600 metres
Connector MCBH-6-MP-SS


Input voltage 11 to 25 Vdc
Data output Digital RS232 and analogue 0 to 5 Vdc (RS422, SDI-12 and 4-20 mA options available)
Power requirements <1 Watt @ 12 V


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