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Volume / Pressure Conversion

Robert Leach
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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  • My point is that 10 psi does not equate to one volume. Earlier you said that the op needs to know the air volume of 10 psi, which to me indicates that 10 psi only equates to one volume, and this is in no way the case.



    The volume here is a confined space of compressed air, the same amount of air in a smaller space the greater the air pressure would be.
    The escaped air has volume (space), since the pressure of compressed air is greater than atmospheric pressure, that air would expand until it reaches atmospheric pressure which is ~1 bar or ~14.5037738 psi a, equivalent to 0 psi g, depends on where you at. So, his question was; what is the actual cubic mm per second (volume/second) of escaped air at atmospheric pressure of 10psi/minute. which is impossible to answer.
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  • My point is that 10 psi does not equate to one volume. Earlier you said that the op needs to know the air volume of 10 psi, which to me indicates that 10 psi only equates to one volume, and this is in no way the case.



    The volume here is a confined space of compressed air, the same amount of air in a smaller space the greater the air pressure would be.
    The escaped air has volume (space), since the pressure of compressed air is greater than atmospheric pressure, that air would expand until it reaches atmospheric pressure which is ~1 bar or ~14.5037738 psi a, equivalent to 0 psi g, depends on where you at. So, his question was; what is the actual cubic mm per second (volume/second) of escaped air at atmospheric pressure of 10psi/minute. which is impossible to answer.
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