Measuring Air Leakage: Test for Watertight Seal

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    Air Leakage Measure
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SUMMARY

The discussion focuses on measuring air leakage to test the watertight seal of a device without using water. It is established that placing a sealed device on a scale inside an airtight box will not change the weight if there is a leak, as no material is removed from the system. An alternative method proposed involves placing the pressurized watertight box inside a deflated balloon to observe inflation, although concerns about the explosiveness of pressurized air compared to water are noted.

PREREQUISITES
  • Understanding of basic physics principles related to pressure and weight.
  • Familiarity with airtight systems and their properties.
  • Knowledge of safe handling of pressurized gases.
  • Experience with experimental design and testing methodologies.
NEXT STEPS
  • Research methods for measuring air leakage in sealed systems.
  • Learn about the properties and safety measures for handling pressurized air.
  • Investigate alternative methods for testing watertight seals without water.
  • Explore the implications of using balloons in pressure testing experiments.
USEFUL FOR

This discussion is beneficial for engineers, product designers, and researchers involved in testing the integrity of sealed devices, particularly in applications where water cannot be used for testing.

curiouskk
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I was not sure where to post this so decided to start here. If there is a better section please let me know...

If you put a sealed device on a scale and place in an air tight box then fill with air pressure would the weight change of the device if there was a leak? I am trying to do a test to check watertight seal without water. Thanks in advance.
 
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Just to understand this correctly, you have a box in a box, and the inner box leaks gas to the outer box?

Since no material gets removed from the system that is being weighed (both boxes), the weight will stay the same.
 
curiouskk said:
I am trying to do a test to check watertight seal without water.
Assuming the test can be completed within a few hours and not require whole days, could you instead place the pressurised watertight box inside a balloon, then watch to see whether the balloon inflates? Start with the balloon deflated...
 
This method concerns me because one reason water is used rather than air is pressurized air is explosive and pressurized water is not.
 

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