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Phil 1 litre of gas = 0.0353 Cu Ft 1 bar = 14.5034 PSI Metric example: 10 l cylinder at 232 bar = 2,320 litres of gas. Imperial Example: (I think typical cylinders in the states are 207 bar = 3,000 PSI) 80 Cu Ft Cylinder is the volume of gas contained within the cylinder measured at 1 bar. Thus vol = pressure * water capacity 80 = 207 * water capacity Thus the water capacity of 80 CuFt (207 bar or 3,000 PSI) cylinder = 0.386473 cu ft water = 10.9434 litres An 80 CuFt cyl;inder only contains 80 CuFt when it is pumped to its working pressure. But I'm with you that the diving population should convert to the simple metric system. Dave shimell@se*.co* ---------- From: owner-techdiver[SMTP:owner-techdiver@aquanaut.com] Sent: 24 June 1997 11:53 To: techdiver Subject: Metric Having always dived with cylinders measured (internal volume) in Litres, (where Total Air Capacity [Litres] = vol.[litres] x pressure[bar]), I have difficulty keeping up with the conversations which talk about cu.ft capacity cylinders. Can anybody enlighten me a) How is this capacity worked out? & b) Rough equivelents in Cu.ft. for 3L, 7L, 10L, 12L & 15L cylinders. Phil G. P.S. ..or the U.S. could go metric!, which ever is easiest. -- Phil Gerrard -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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