Determine the pressure of a gas in a manometer?

  • #1
479
2
How does one use various liquids and their unique densities to determine the pressure of a gas in a manometer?
 

Answers and Replies

  • #2
russ_watters
Mentor
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Pretty simple: [weight] density times height.
 
  • #3
479
2
Thank you.
 
  • #4
8
0
manometer

on traditional manometer, i.e U-shaped tube, the height difference between the left and the right column is the "h"

To calculate the "manometric" pressure use this formula
Pressure = density of the liquid * gravity constant * the height difference "h"

To obtain the absolute pressure simply add this manometric pressure to the atmospheric pressure (i.e. on standard condition : 1 atm, 760 mmHg, 101.3 kPa)

Hope it helps
 
  • #5
479
2
Yes it does greatly. Thanks! :smile:
 

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