Turbidity and Total Suspended Solids (TSS) sensor
Aztec ATS430

The simplest way to remain compliant with turbidity and TSS level monitoring

Certified by MCERTS for measuring turbidity and featuring ABB’s innovative adaptive TSS calibration technology, the ATS430 can be counted on to provide improved control of turbidity and suspended solids throughout its operational life. Its service-free design, plus features including in-situ cleaning, simplified calibration, predictive maintenance diagnostics and EZLink connectivity, enables it to offer the lowest cost of ownership of any device on the market.   



The ATS430 is a compact, yet extremely robust turbidity sensor capable of measuring turbidity and total suspended solids (TSS) concentrations up to 4000 NTU or 100,000 mg/l.

With a choice of hermetically-sealed stainless steel or titanium versions, each featuring scratch-resistant sapphire optical windows, the ATS430 provides a versatile solution for use in benign environments through to those featuring aggressive or corrosive media.

Supplied fully factory-calibrated ready for use straight out of the box.

Users benefit from:

  • no servicing for the lifetime of the sensor
  • in-situ cleaning
  • advanced predictive maintenance diagnostics
  • EZLink automatic sensor recognition and set-up
  • adaptive TSS calibration feature for improved process control
  • simplified calibration
  • flexible installation
  • certified performance


  • Range
    Turbidity: 0 to 4000 NTU
    Suspended solids: 0 to 100,000 mg/l SiO2 (100 g/l)
  • Accuracy
    Turbidity: <±2 % measured value
    Suspended solids: dependent on sample
  • Method
    90° scattered light measurement in accordance with DIN/EN 27027/ISO 7027
  • Repeatability
    <1 %
  • Limit of detection
    0.006 NTU
  • Response time
    T90 < 30 s with filtering disabled
  • Resolution
    Turbidity: 0.001 NTU
    Suspended solids: 0.001 mg/l
  • Storage conditions
    –5 to 70 °C (23 to 158 °F)
  • Operating temperature
    0 to 60 °C (32 to 140 °F)
  • Operating pressure
    Up to 10 bar (145 psi) for metal versions
  • Dimensions
    0 mm (1.57 in.) diameter
    180 mm (7.08 in.) length


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