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DO Sensor – Dissolved Oxygen

NKE

This sensor measures the dissolved oxygen in the water. The measuring principle is optical and is based on an LED that excites an oxygen-reactive membrane and detects its oxygen-dependent luminescence emission by means of a photodiode.



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Description

Key features:

  • Dissolved oxygen measurement
  • Optical technology
  • Temperature sensor for automatic temperature dependent compensation of the oxygen measurement

Specifications

Concentration:

  • Technology: optical
  • Range: 0 – 23 mg/L (max: 0 – 44 mg/L)
  • Accuracy at 20% O2: +/- 0.1 mg/L
  • Resolution at 20% O2: 0.025 mg/L

Saturation:

  • Technology: optical
  • Range: 0 – 250% (max: 0 – 500%)
  • Accuracy at 20% O2: +/- 1% of reading
  • Precision at 20% O2: 0.25%