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On Thu, 19 Aug 1999 bigvon@be*.ne* wrote: > Does anyone know a method or formula for determining the cubic foot ( > sorry I am not into metric) volume of a cylinder by filling it with > water? I seem to remember a discussion on this some time ago. Any help > would be appreciated. Fill the cylinder with water to the bottom of the neck. You can either measure the amount of water that takes, or if you have an accurate scale, measure the weight difference. Volume at rated pressure is just volume of water times the rated pressure divided by 1 ATA (14.7 psi). This is the ideal gas volume - the real volume will be lower, and depends upon what gas you're using. Air will be about 3.5% lower at 3000 psi. For example, an AL80 with an ideal gas volume of 80 cf is really 77.4 cf at 3000 psi. -- Art Greenberg artg@ec*.ne* -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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