Measurement of Pressure | How to Measure Pressure of liquid

Measurement of Pressure

The pressure of a liquid may be measured by manometers. These are the devices used for measuring the pressure at a point in a liquid by balancing the column of the liquid with the same or another column of liquid.

***The manometers are classified as follows***

1. Simple manometers such as piezometer and U-tube manometer.

2. Differential manometer.

A Piezometer is the simplest form of manometer used for measuring moderate pressures of liquids.

A manometer is used to measure 

(a) High pressure of liquids,

(b) Vacuum pressures, and

(c) Pressure in pipes and channels.

A differential manometer is used to measure the difference in pressures between two points in a pipe.