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Observator 100 years

Airflow Eco Flow Probes

The Eco Flow Probe range is primarily used for permanent flow measurement within HVAC ductwork systems.

Probes are installed in pairs that generate a differential pressure signal that directly relates to volume flow. Accuracy of measurement will be dependent upon the number of pairs installed to make up a grid. The probes can be utilised within round, oval, square or rectangular ducts.

Available in the following sizes: 100, 150, 200, 250, 300, 400 and 500mm.

Additional documents


  • Easy to fit
  • Low cost solution
  • Different sizes available
  • Suitable for clean air velocities between 1.5 and 30m/s
  • Produced from Stainless Steel 321
  • Operating temperature till 70°C
  • Long term reliability as it has no moving parts
  • Simple in operation

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