Volume / Pressure Conversion

All,

I know this is not necessarily PCDMIS related but it is job related.

The note on the print says:

Max leakage at 5.5 bar: 5 cubic mm per second at atmospheric pressure.

I have a tester that can input 80 psi and I can measure the drop in pressure. For instance I can watch for 1 min and see that it drops to 70psi. Is there a way to convert this into something I can use to satisfy the print callout? Any help would be greatly appreciated.

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jhingle over 13 years ago

You can do it with the pressure drop over time, but you will need to know the ideal gas law. PV=nRT
P = pressure, V = volume, n = number of moles, R = gas constant, and T = temp. Calculate n for both instances (pressures). Use the difference in molar mass to calculate the volume that leaked out and divide by time.
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jhingle over 13 years ago

You can do it with the pressure drop over time, but you will need to know the ideal gas law. PV=nRT
P = pressure, V = volume, n = number of moles, R = gas constant, and T = temp. Calculate n for both instances (pressures). Use the difference in molar mass to calculate the volume that leaked out and divide by time.
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