How can work the open tube manometer
Answers
One of the simplest instruments that we can use to help us measure the pressure within a given container is called an open-tube manometer. In fact, many more complicated devises that help us measure the pressure are based off of the open-tube manometer. The open-tube manometer is a U-shape tube that is partially filled with a fluid, usually mercury or water. The pressure that is measured is related to the difference in height of the fluid at the two ends of the U-shaped tube. One end of the tube is attached to the container while the other end is exposed to the atmosphere. If there is a difference in pressure between the atmosphere and the container, the level on both ends will not be the same. In this case, we can calculate the pressure within the container by taking the sum of the atmospheric pressure and the pressure due to the change in height of the fluid level.
+