The document summarizes an orifice meter, which uses Bernoulli's theorem to measure fluid or gas flow rates. It has an inlet section, orifice plate, and outlet section. Orifice meters are commonly used in water treatment, natural gas, petrochemicals, oil filtration, and refineries. They are inexpensive, can be installed vertically, horizontally or inclined, and have low maintenance costs. However, they require straight piping and fluid properties can impact accuracy.

1. ACHARYA INSTITUTE OFTECHNOLOGY
DEPARTMENT OF BIOTECHNOLOGY
ORIFICE METER
Presented by:
Mubeena.H (1AY20BT020)
Ananya(1AY20BT006)
Presented to:
Dr.Suneetha T.B.

2. CONTENTS
• Introduction .
• Construction.
• Formula.
• Application.
• Advantages .
• Disadvantages

3. An orifice meter is a device which used to measure
the flow rate of a gas or a fluid.
 The orifice meter works on the principle Bernoulli’s
theorem.
It is also known as Pipe orifice and orifice plate.

4. Construction
1. Inlet section,
2. Orifice plate,
3. Outlet section.

5. Application
•Water treatment Plants,
•Naturalngas ,
•Petrochemicals,
•Oil filtration plants,
•Refineries.

6. Advantages
• Very cheap,
• Direction possibility can be vertical, horizontal, and inclined.The space required
for installation is less.
• It is usually thin enough to fit between an existing pipe.
• The maintenance cost is low.
• It offers very less pressure drop.
• The construction and design of this orifice meter are very simple.
• It is capable to determine a wide range of flow rates that the main advantages.

7. Disadvantages
• Orifice meter downstream pressure can not be recovered in
Orifice Meters.
• It requires a single phase of liquid.
• The orifice accuracy can be affected by the viscosity, density,
and pressure of the fluid.
• It requires a straight pipe for good precision and accuracy.
• The 40% to 90% overall head loss of the differential pressure.
• The obtained coefficient of discharge is low.

8. References
https://themechanicalengineering.com/orifice-meter/