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Turbidity measurement without contact with the sample.

90° scattering method compliant with ISO 7027 / EN 27027 with visible light beam.

Black rigid PVC sensor body. Optional debubbler device applicable externally.

No mechanically moving parts.

Measurement pre-processed in the sensor which provides high sensitivity in low-signal transmission.


  • Turbidity in water upstream of treatment plants
  • Industrial or Munucipal water treatment plant discharge
  • S461 N Technical specifications

    Measuring range 0…100 NTU / 0…1000 NTU (optional 0…9999 NTU)
    Measuring method Nephelometric
    Resolution 0,1 NTUfor 0…100 NTU range
    1 NTUfor 0…1000 NTU range
    Accuracy ±10% f.s.
    Maximum flow rate 60 l/h
    Operating temperature 0…50 °C
    Maximum pressure 0.5 bar
    Body material ABS case
    Black PVC measuring cell, receiver assembly and spotlight assembly
    O-Rings NBR and Silicon
    Optics Special Glass with oleophobic treatment
    Power supply 24Vdc
    Power consumption max. 5W
    Cable 5m with connector
    Calibration 1-point for scale
    Signal interface Modbus RTU Standard Protocol RS485
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