Briefly explain how to construct a simple manometer
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Answer:
Attach the plastic tubing carefully around the length of the plank using the tube fasteners. Ensure the tubing makes a smooth, even “U” bend around the end of the plank so that the tubing does not become kinked.
Position the plank against a vertical surface, such as a board. Use the plumb bob to ensure the plank is exactly vertical. Hammer a nail through the plank or use some other means to attach it securely to the board.
Pour approximately 100 ml water into the beaker. Add enough dye to turn the water a bright red and mix thoroughly. Pour the water carefully into the tube.
Place a measuring device on the side of the manometer on the opposite end of the expected pressure. Line up the zero point of the measuring device with the surface of the liquid and attach it securely with tape. The measuring device may be a ruler or graph paper, depending on the specific application.
Attach a source of positive pressure to one end of the manometer with an airtight seal. The pressure may then be measured in inches of water.