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Actually Art: My guess is that most manufacturers provide two ports to provide more hose routing options. I doubt they are really expecting people to use 2 SPGs or a backup SPG to an air integrated computer. Besides, the 2 port regulators have been around longer than air integrated computers. Remember that the vast majority of these regs only get used for single tank recreational diving where "personal preference" is the order of the day. If you have only 1 LP port then you only have one hose routing option for the SPG unless you flip the regulator upside down. With two ports you now have twice as many convoluted ways to route your SPG or console. -KL > -----Original Message----- > From: Art.Paltz@R2*.CO* [mailto:Art.Paltz@R2*.CO*] > Sent: Tuesday, May 30, 2000 6:18 AM > To: techdiver@aquanaut.com > Subject: RE: 2 high pressure ports ? > > > Mike, > > Not a proponent of this but I think I have an explanation. People who use > integrated computers (if they are hell bent on using one) should have 2 HP > ports. Would never use an integrated computer myself and have my gas > supply reported by something that relies on batteries. I think gas supply > is just too important! Seen too many computers screw up calculations to be > 100% sure that it's reporting gas supply correctly, it's just me. If the > battery goes dead then you have no idea how much gas you have. I've had > digital gauges go dead even though the battery meter read full the night > before the dive. Cold has funny effects on batteries. > > Have a few friends that use integrated computers. I usually tell them that > if they are going to use one they should also have a backup mechanical > gauge. If you dive doubles then you can use the other HP port on the second > post. If you dive singles then you're only options are to either start > diving doubles or have 2 HP ports. That is provided you're not willing to > throw away/sell that crappy integrated computer! > > No comment on the 400BAR manifolds. > > Art. > > > -----Original Message----- > From: mike ee [SMTP:tingtong74@ya*.co*] > Sent: Tuesday, May 30, 2000 6:52 AM > To: techdiver@aquanaut.com > Subject: 2 high pressure ports ? > > anyone has any idea why we need 2 pressure ports for > the 1st stage ? i though 1 will do for the pressure > gagues ? > > also why are there 300bar/4000psi and 400bar/5000psi > gagues ? gas law beomes non-liner from somewhere 240 > bar onwards...doesn't make sense to pump tank to any > higher rite ? can we just stick to a 300bar pressure > gague/spg ? > > __________________________________________________ > Do You Yahoo!? > Kick off your party with Yahoo! Invites. > http://invites.yahoo.com/ > -- > Send mail for the `techdiver' mailing list to > `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to > `techdiver-request@aquanaut.com'. > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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