What is the difference between orifice meter and Venturi meter?

Venturi meter and orifice meter are used for measuring the volumetric flow rate of the fluid that based on the continuity equation and Bernoulli’s equation. The difference between venturi meter and orifice meter are: The pressure loss in venturi meter is 10\% while in the orifice meter the pressure loss is 50-60\%.

Why is a Venturi more accurate than orifice plate?

The Venturi meter is insensitive to changes in velocity vector. The velocity vector of fluid must be perpendicular to the orifice plate for lower pressure loss and better accuracy in measurement of average velocity or flow rate or the flowing fluid.

What is the energy equation used in orifice meter?

The working of the orifice meter is based on the principle of Bernoulli’s equation. As you can see in the diagram there is a pipe in which fluid is passing from one side to another side that is an inlet to outlet. The manometer is attached hereto measure the pressure differences between two-point.

How Venturimeter orifice meter and pitot tubes are different from each other?

The orifice meter is a device (cheaper than venturimeter) used for measuring the discharge of the liquid flowing through a pipe. It works on the same principle as that of venturimeter. The pitot tube is a small open tube bent at right angle. It is used to measure the velocity of flow at the required point in a pipe.

What is the difference between orifice meter and orifice plate?

The main difference between venturimeter and orifice meter is the Venturimeter is not flexible with the flow rate range while the orifice plate in the orifice meter can easily change for different flow rates.

What is the difference between rotameter and orifice meter?

The orifice meter, Venturi tube and flow nozzle work on the principle of constant area variable pressure drop. Here the area of obstruction is constant, and the pressure drop changes with flow rate. On the other hand Rotameter works as a constant pressure drop variable area meter.

What are the advantages and disadvantages of orifice plate?

Advantages and disadvantages of orifice plate Simple in construction, the standards for construction and calibration are readily available. They are cheap; their price does not increase dramatically with size. Easy to install and remove. They are efficient and reliable for many years.

What are the different types of orifice plate?

Types of Orifice Plates

• Square Edge (Standard) Bore. For the common square edge concentric bore orifice, the bore and bevel is the standard method of limiting the plate edge thickness.
• Quadrant Edge Bore. The quadrant edge bore is an orifice with the inlet edge rounded.
• Eccentric Bore.
• Segmental Bore.
• General Description.

How does an orifice plate work?

The small hole on orifice plates restricts flow which causes the pressure to drop. The pressurecan be measured using pressure gauges before and after the orifice plates whichallows you to determine the flow rate using the Bernoulli’s Equation.

What is the difference between orifice and mouthpiece?

An orifice is an opening made in the side or bottom of tank, having a closed perimeter, through which the fluid may be discharged. A mouthpiece is short tube fitted to a same size circular opening provided in a tank so that fluid may be discharged through it.

What is the difference between Weir and notch?

Basically there is no difference between a notch and a weir, except that a notch is of small size while a weir is of large size. A notch is usually made of metal plate whereas a weir is made of masonry or concrete. The bottom edge over which the water flows is called the sill or the crest of water the notch.

Which is more accurate Venturimeter and Orificemeter?

For measuring mass flow rate of liquid flowing inside tube, venturimeter is the most accurate device. Since experimental measurement by venturimeter is 0.96-0.99 times theoretical measurement. Next comes, orifice meter which is 0.6- 0.62 times theoretical measurement.