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AlpHa Measurement Solutions |
Turbidity in Ballast Water Treatment

Turbidity in Ballast Water Treatment

Turbidity measurement is a critical parameter in ballast water treatment systems to ensure effective filtration, verify treatment performance, and maintain compliance with international marine discharge regulations. Real-time monitoring of suspended solids helps vessel operators prevent the transfer of invasive species and reduce sediment accumulation in tanks.

AlpHa’s TU90 turbidity sensor features a rugged optical system designed with the following features:

  • Precision 90° laser-based scattering method compliant with ISO 7027
  • Wide NTU range options (0 – 100, 0 – 1500, and 0 – 5000 NTU)
  • Industry-leading low-range accuracy with ± 1% error in the 0 – 100 NTU range
  • Built-in temperature compensation
  • Custom OEM sonde and stand-alone configurations including optional programmable wiper

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  • Range: 0 – 100 NTU
    • Linearity: ~0.999
    • Resolution: 0.001 ~ 0.1 NTU
    • Accuracy: ≤ 1% 
  • Range: 0 – 1500
    • Linearity: ~0.999
    • Resolution: 0.01 ~ 0.1 NTU
    • Accuracy: < 2%
  • Range: 0 – 5000
    • Linearity: > 0.99
    • Resolution: 0.04 ~ 4 NTU
    • Accuracy: < 4%
  • Light Source / Method: 850 nm Laser / 90° Scattering
  • Turbidity Response Time: T90 < 10 seconds
  • Temperature Range: -5 to 60°C
  • Max Pressure: 15 bars
  • Depth Rating: 150 m
  • Flow Rate Specification: 0.1 ~ 10 L / min
  • Consumption
    • Signal Only: 0.6 W
    • Wiper Running: 1.9 ~ 3.8 W
  • Dimensions: 40 mm x 210 mm
  • Input Power: 12 – 36 VDC
  • Warranty: 12 Months
  • Form Factor
    • Process Body
    • Cartridge
    • Custom Options Available
  • Housing Material Options
    • PVC / CPVC
    • Metal
      • Titanium
      • Other Metals Available
  • Thermistor Options
    • Integrated Temperature Compensation
  • Wiper
    • Integrated
    • No Wiper Integrated
  • Integrated Insertions
    • Plumbing Tee Available
    • Flow Cell Available
    • Sonde Integration
  • Analog
    • 4 – 20 mA
    • Custom Options Available
  • Digital
    • RS-485 MODBUS RTU
    • Custom Options Available
  • Connectors
    • Integrated Connectors (detachable or cableless)
      • Mil-Spec
      • Custom Options Available
    • Connectors with Cables (including temperature)
      • Tinned Leads
      • DIN
      • Spade Lugs
      • Circular Connectors
      • Any commercially available connectors and custom options available