Home > Water Manometer. Water Manometer. A manometer is a pressure measuring device that uses a U-shaped glass tube filled with a liquid to measure small differences in pressure. It measures pressure differences by balancing the weight of a fluid column between the two pressures of interest.

How does a water manometer work?

In its simplest form the manometer is a U-tube about half filled with liquid. … When positive pressure is applied to one leg, the liquid is forced down in that leg and up in the other. The difference in height, “h,” which is the sum of the readings above and below zero, indicates the pressure.

What is manometer and how does it work?

A manometer is a device that measures air pressure using a container with a “U”-shaped tube open at one or both ends. … The height of the fluid on the open side will be higher on that side when air pressure is less than the gas pressure and lower on the open side when the air pressure exceeds the gas pressure.