Manometer: Types And Uses

A manometer is a device which measures the pressure of pipelines. There is no specification pressure, it can be liquid, steam, or gas with respect to an atmosphere. Manometer lacks in measuring solid. 

Read More: Unit Of Pressure

Key Terms: Manometer, U-tube Manometer, Enlarged Leg Manometer, Well Type Manometer, Atmospheric pressure

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What Is Manometer?

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A manometer is a precision instrument which is used to measure fluid or gas in a confined space and notify pressure. It is further classified into two types namely analogue manometers and digital manometers. The most common type of manometer used in the medical field is the sphygmomanometer.

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The pressure of the fluid is given by the equation:

Whereas; 

P = fluid pressure

ρ = density of the fluid

g = acceleration due to gravity

h = depth

Manometer

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Types Of Manometer

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The different types o manometer are:

• Enlarged Leg Manometer - In this manometer, two legs can be changed for changing the measurement span. A float can be observed in an enlarged leg which is further used for indicating. 
• U-Tube Manometer - It has a vertical or an inclined U-tube column filled with mercury. It helps to display the level of pressure. In the exposed column of the device level of liquid in the limbs are equal which expresses the atmospheric pressure. If one end of the column is connected, it will be make difference in the level of the liquid in the limbs. 
• Inclined Tube Manometer - This manometer is slant shaped. It has a 10-degree angle for measuring the leg. The inclined manometer is specifically used for measuring the small pressure differences. The sensitivity of the device improves with that of the inclination.
•  Well Type Manometer - It has a large well in one of its legs and the other leg works as a simple tube. A U-tube manometer is used as a large well. The area of the well is comparatively more than the area of the tube.

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Uses Of Manometer

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The specific uses of the manometer are:

• Manometer is used for monitoring compressor system operations.
• Manometer is used to measure the fluid.
• Manometer is used to measure blood pressure.
• Manometer is also used in gas pressure monitoring in piping systems.
• Manometer is used in meteorological and weather conditions monitoring.

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Things To Remember

• Manometer lacks in measuring solid. 
• Manometer is used to measure the fluid.
• The most common type of manometer used in the medical field is the sphygmomanometer.
• Mercury is used to measure the pressure.
• Manometer used in the medical field is a sphygmomanometer.

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Important PYQs Based On The Manometer

1. Sphygmomanometer Is An Instrument Used To Record
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