9.2.1. Piezometer

Try these first

1. 1.

   What is the formula used to calculate pressure in a piezometer?

   Hint

   Think about how the height and density relate to the pressure measurement.

2. 2.

   What type of manometer uses a straight tube to measure pressure?

   Hint

   Consider the shape of the tube used in this device.

3. 3.

   What is the primary purpose of a piezometer?

   • To measure the height of a liquid
   • To measure fluid pressure
   • To measure temperature

   Hint

   Focus on what device measures pressure in fluids.

4. 4.

   True or False: A differential manometer can measure absolute pressure.

   • True
   • False

   Hint

   Think about what 'differential' means.

5. 5.

   A U-tube manometer contains water on one side and oil on the other. The height of the oil column is 0.2 m, and its density is 850 kg/m³. Determine the water height in the manometer if the atmospheric pressure is 101325 Pa.

   Hint

   Equate the pressure of both sides to find the unknown height.

6. 6.

   A differential manometer is used between two tanks with liquid A (density = 950 kg/m³) and liquid B (density = 1200 kg/m³). If the pressure in tank A is 150 kPa and in B is 200 kPa, what is the pressure difference displayed on the manometer?

   Hint

   Use the densities and heights to figure out how pressure impacts fluid columns.