S461TN Infrared turbidity probe.

S461TN Infrared turbidity probe for pure and process water.

S461TN Infrared turbidity probe for pure and process water.
• Use of an optical measurement process
• Pulsed infrared light beam scattering method
• Sensor body in AISI 316 and black rigid PVC
• Absence of moving mechanical parts
• Pre-processed measurement in the sensor
Price on request
The S461TN sensor is used for the optical measurement of turbidity in pure water and process up to 1000 NTU or 4000NTU. By turbidity is meant the dispersed component of a coming light beam deviated from its natural path through the impact with denser particles present in the medium (e.g. solid particles).
The probe uses the 90 ° scattering light measurement method. The measurement method is based on the Tyndall effect.
The turbidity of the medium is determined by the amount of scattered light. The transmitted infrared light beam is "scattered" by particles present in the medium. The scattered light beams are detected and processed by photo-receiversplaced at an angle of 90° with respect to the direction of the transmitted light beam.
The signals due to "scattered" light are then converted into signals in frequency, which are assigned to corresponding turbidity values and are shown on the display.


• Measurement of turbidity in pure and drinking water
• Turbidity measurement in primary, industrial and recirculating waters

Technical Characteristics

Measuring range / adjustment:
    • 0÷1000 [NTU]
      0÷4000 [NTU]
    Outputs available:
      • 4÷20 [mA]
      • RS485
      Process connection:
        • Thread BSP M
        Operating temperature:
          • 0÷+75 [°C] in AISI 316
          • 0÷+50 [°C]
          Pressure max:
            • 4 [Bar]
            Materials in contact with the media:
              • Special optical glasses
              • Stainless steel AISI 316
              • NBR
              • PVC
              • Silicone
                • EC Declaration of Conformity