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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'.
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