What is a Manometer? Explain it's working
Answers
a device used to measure the pressure at any point in a fluid, manometers are also used to measure the pressure of gas and air. ... A sphygmomanometer, a type of manometer, is commonly used to check blood pressure in humans
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.