Question

how does a manometer work?

Answer 1

A manometer quantifies the difference in air or liquid pressure by comparing it to an outside source such as a sample of Earth's atmosphere. It works when liquid is inserted in the tube like mercury and the other end of tube is filled with gas then sealed. The liquid gets balanced in the lower section of the U depending on the strength of the gas. Then measurements are taken to see how far the liquid in the sealed end has been pushed either underneath the point of the liquid in the open end or above it. In simple terms A manometer works by measuring the pressure of liquid or gas per inch in a U shaped tube. This lets you know when you have ran out, or have a leak. Each appliance or grill you have requires a certain amount of pressure to keep running, like a propane grill.

Answer 2

• Aim: To understand the working of a manometer. From a rubber balloon, cut a small piece of rubber and cover the mouth of a thistle funnel using this cut portion. Connect the thistle funnel using a rubber tube with the manometer. Fill the manometer with a coloured liquid. The manometer consists of a glass tube in which the liquid is filled. The glass tube is supported by a wooden board and it has graduations marked on it. Dip the thistle funnel in a beaker filled with water. Mark this position as A. Note the reading in the manometer. Lower the funnel deeper into the beaker and mark this position as B. Note the reading again in the manometer. Now, note the difference in the two readings. This difference tells us the pressure exerted by the liquid at different depths.