TRAINING OBJECTIVES
• Flow measurement comparison between the following elements:
– Venturi tube
– Rotameter
– Diaphragm
– Globe valve
– Pitot tube
– 90° elbow
• Load loss calculation for
– Venturi tube
– Rotameter
– Diaphragm
– Globe valve
– Pitot tube
– 90° elbow
• Demonstration of Bernoulli equation in a Venturi tube.
• Study of static, dynamic and total pressure.
For a better experience and visualization, the flow meters are built with transparent material.
TECHNICAL DATA
Inner diameter: Main pipe: Ø 25mm
Gauges:
• Water column manometer: 500mm
• Electronic differential pressure gauge
Pressure measuring points:
• Quick fittings with double closing.
Diaphragm:
• Hole diameter of the plate: Ø 13mm
• Hole diameter of the plate: Ø 15mm
Rotameter:
• Measuring range: 150 – 1500 l/min
Venturi tube:
• Throat Ø12mm
• Inner diameter upstream: Ø 21.2mm
• Upstream tapering: 22°
• Downstream tapering: 7°
Other elements:
• Pitot tubes
STUDY OF FLOWMETERS
The objective of this equipment is the study and comparison of some of the different types of existing flow-meters.
The system includes several representative flow gauges such as a Venturi tube, a rotameter, a diaphragm, a globe valve and a Pitot tube placed in series to allow a direct comparison of results.
By doing some of the practices proposed, it is possible to understand the nature of fluids and the laws of statics, dynamics and thermodynamics.
It is also possible to easily observe general principles such as the laws of mass and energy conservation.
With help of a regulating valve it is possible to adjust the flow rate according to the needs of practice.
The results are displayed in the water column manometer and the supplied electronic differential gauge.
Through these pressure gauges students can work with data taken from different strategic points of the piping.
