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>From: Frank Deutschmann <fhd@in*.ne*> > >Graeme Davison sez: >> Here in Europe we don't work in Cubic feet but work in water capacities and >> pressure(ie how much fluid the cylinder could take (defined as Water capacity) >> and therfore what is its exact volume) - what this allows us to do is to simply >> look at a contents gauge (in bars) and calculate real easy how many cubic >> liters of gas we have at any point in the dive > >-- and also to simply convert to time left! > >I have tried to find pressure guages calibrated in Bar here in the States, but >to no avail -- and I was even told that Europe also used PSI for scuba >contents use. > >Bar is a much more logical choice for a contents guage, but given the crazy >looks I get sometimes, I wonder if other people realize this. With a guage >calibrated in Bar, conversion from guage reading to time reamining is easily >done in your head, with no look-up tables, etc -- just one simple constant >to remember. Here in Australia, we have an even crazier system! All our pressure gauges are in BAR (except for a few older divers equipment), but here tanks are marketed in cu ft! Hence on charter boats, you are asked to quote your tank size in cu ft, but you tank pressure in BAR. In the tech. community, people tend to use the full metric system and quote tank size in terms of water capacity in liters. Regards, David. ______________________________________________________________________________ David Giddy, | Voice: +61 3 253 6388 Telstra Research Laboratories, | Fax: +61 3 253 6144 P.O. Box 249, Rosebank MDC, 3169, AUSTRALIA | Internet: d.giddy@tr*.oz*.au* ------------------------------------------------------------------------------
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