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Flow Over Notches Apparatus

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Flow Over Notches Apparatus

Flow Over Notches Apparatus- Engineering equipments

This unit consists of Notches Apparatus or Weirs allow hydrologists and engineers a simple method of  the measuring  coefficient of Discharge in small to medium-sized streams, or in industrial discharge locations.

The apparatus is used to calibrate the following types of notches:-

  • Rectangular Notch
  • Triangular Notch


Open Flow channel- 1000 X 250 mm
• Rectangular Notch- 80 mm (Aluminium & Brass)
• Triangular Notch – 450,600,900 (Aluminium& Brass)
• Flow control valve to change Discharge.
• Measuring tank- 295 X 345 X 345 mm
• Sump tank- 900 X 350 X 350 mm


  • High efficiency
  • Sturdy construction
  • Optimal performance
  • Long life
  • Hassle-free performance
  • Minimal maintenance


  • To determine co-efficient of discharge using different notches

Utilities Required:

  • Electric supply 0.5 kW, 220V AC, Single Phase
  • Water supply Tap water connection ” BSP Distilled water @ 60 liters (optional)
  • Floor Area with Drain facility


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The objectives of this experiment are Determine the coefficient of discharge of the given external flow measuring notches for different rates of flow.