Turbidity Measurement (NTU)

TUP 200 Turbidity Probe

Precision turbidity probe IP68, measuring principle according to ISO 7027, with compensation of soiling.


  • Minimal maintenance
  • Short response time
  • Long lifetime
  • Output in NTU or mg/l
  • Robust design
  • Easy to install

Turbidity is determined using the established 90° light scattering method. The probe contains two light detectors, one in the optical path, one in an angle of 90° outside of the optical path. Suspended particles in the optical path however can still cause scattering which directs light to the scattered light detector. Turbidity is then calculated from the ratio of transmitted light to scattered light.

  • Drinking water
  • Wastewater treatment plants
  • Water monitoring Process water (electroplating)
  • Fish farming