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[[File:Manometer1.gif|thumb|right|Manometers]] | |||
[[File:Manometer.jpg|thumb|right|Manometers]] | |||
'''Manometer''' is an instrument used to measure the pressure exerted by liquids and gases. Pressure is exerted on one end of a U-shaped tube partially filled with liquid; the liquid is displaced upwards on the other side of the tube by a distance proportional to the pressure difference on each side of the tube. | |||
A manometer could refer to a pressure measuring instrument, usually limited to measuring pressures near to atmospheric. The term manometer is often used to refer specifically to liquid column hydrostatic instruments. | |||
It is also used to measure pressure in a fluid, especially a double-legged liquid column gauge used to measure the difference in the pressures of two fluids. | |||
==Principle== | |||
Manometers are those pressure measuring devices which are based on the principle of balancing the column of liquid by the same or another column of liquid. | |||
==Types of Manometers== | |||
Manometers are of two types. | |||
===Simple manometers=== | |||
Simple manometers are those which measure pressure at a point in a fluid containing in the pipe or a vessel. | |||
===Differential manometers=== | |||
Differential manometers measure the difference of pressure between any two points in a fluid contained in a pipe or vessel. | |||
==Industrial applications== | |||
Manometers are used for a variety of industrial and application specific pressure monitering applications. visual monitering of air and gas pressure for compressors,vaccum equipment and speciality tank applications such as medical gas cylinders, fire extinguishers, | |||