Turbidity Sensor range with measurement in FTU and NTU suitable for drinking water applications and effluent applications

Turbidity Sensor

Turbidity sensors are designed to be permanently installed into a process to give continual or online turbidity measurements. They are normally available for a range of mounting options with the most common types available as:-

  • Dip Mounting or submersion turbidity sensors
  • Inline mounting or flow line turbidity sensors
  • Sample line mounting turbidity sensors.

While the turbidity sensors can be mounted in a number of different ways, the way in which the turbidity sensors monitor the turbidity values is standardised across our range. All of our turbidity sensors subscribe to the methodology set out in ISO 7027 – EN 27027 and use back scattering light technology at 90° to measure the turbidity value.

The light is emitted at a fixed wavelength in the infrared spectrum which ensures that the turbidity measurement is not affected by the colour of the solution it is measuring.

The standard for measuring Turbidity in the United States a slightly different methodology is used, which is in accordance with United States Environmental Protection Agency regulation USEPA 180.1 and we're able to turbidity sensors in accordance with US EPA 180.1.

Turbidity Sensor Measurements

As our Turbidity sensors are ISO 7027 – EN 27027 compliant they output the measured turbidity in NTU (Nephelometric Turbidity Units) and the signal is connected to a turbidity controller to give a displayed value of the turbidity as well as relay control, 4-20mA current outputs and a number of other control options.

If you wish to simply measure the turbidity and output a 4-20mA corresponding to the measured Turbidity; then we recommend our Turbidity Transmitters which include integrated electronics to give an isolated 4-20mA output signal. The turbidity transmitters use the same sensor technology as our Turbidity Sensors and also correspond to ISO 7027 – EN 27027. (We also offer high and low range sensors with and output in FTU.)

Turbidity Sensor Maintenance

The turbidity sensors use sophisticated circuitry and precision electronics to ensure that the turbidity value is measured precisely. This involves using a light source, photo-receptor and an acrylic lens.

With the exception of period calibration and cleaning of the lens, which can be reduced by using the auto-clean system which is supplied as standard on our submersible turbidity sensors, there is very little preventative maintenance, period calibration or human interaction with the device required.

Turbidity Sensor Range


TU810-910 Inline Turbidity Sensor

TU810-910 Inline Turbidity Sensor

The TU810 Turbidity Sensor adheres to the nephelometric methodology outlined in ISO 7027 – EN 27027 and is designed to be mounted into a flow cell or sample line cell for giving continous turbidity measurements.

The TU810 can monitor a wide range of turbidity values from as low as 0.001 NTU up to 4000 NTU and is suitable for drinking water applications, water quality analysis and effluent monitoring.
The ranges covered include:-

  • 0 - 4.000 NTU
  • 0 - 40.00 NTU
  • 0 - 400.0 NTU
  • 0 - 4000 NTU

The TU810 flow line or sample line turbidity sensor is designed to output a signal to one of our Turbidity Controllers.

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TU8182 Submersible Turbidity Sensor

TU8182 Submersible Turbidity Sensor

The TU8182 Turbidity Sensor adheres to the nephelometric methodology outlined in ISO 7027 – EN 27027 and is designed to be mounted into a riser tube for submersion into tanks, streams or other vessels to give continuous turbidity measurements.

The TU8182 can monitor a wide range of turbidity values from as low as 0.001 NTU up to 4000 NTU and is suitable for drinking water applications, water quality analysis and effluent monitoring.
The ranges covered include:-

  • 0 - 4.000 NTU
  • 0 - 40.00 NTU
  • 0 - 400.0 NTU
  • 0 - 4000 NTU

The TU8182 flow line or sample line turbidity sensor is designed to output a signal to one of our Turbidity Controllers.

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