3. Pressure Measurement Devices

Try these first

1. 1.

   What does a barometer measure?

   Hint

   Think about the weather and atmospheric conditions.

2. 2.

   What is gauge pressure?

   Hint

   Consider how we measure pressure in different contexts.

3. 3.

   What does a barometer primarily measure?

   • Atmospheric pressure
   • Gauge pressure
   • Fluid density

   Hint

   Think about devices you might use when checking the weather.

4. 4.

   True or False: Gauge pressure accounts for atmospheric pressure.

   • True
   • False

   Hint

   Remember what 'gauge' means in this context.

5. 5.

   A pressure transducer indicates a gauge pressure of 600 kPa. If the local atmospheric pressure is 100 kPa, what is the absolute pressure?

   Hint

   Remember to add the atmospheric pressure to the gauge pressure.

6. 6.

   Determine the height of mercury needed to measure a pressure of 1 MPa using a manometer. (Take density of mercury = 13,600 kg/m³)

   Hint

   Use the mercury density to find the height in a manometer.