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--=_ORCL_6618726_0_11919608161820590 Content-Transfer-Encoding:7bit Content-Type:text/plain; charset="US-ASCII" I agree that it is stupid for a computer to do this, but just because something is stupid doesn't mean they don't do it that way (e.g., DCIEM's recommendation is to use a shotline and not a gauge for deco is different than how everyone else does it). Since it's not clear from Uwatec's documentation what they do, and I was sick of talking about it on the net, I called them and asked. They claim that the gauge measures depth in feet as = (ATA-1)*34. That is, calibrated in fresh water at sea level. Note that capillary gauges, which many people use for shallow stops since they are accurate shallow, are "stupid" by our mutual definition, since they measure depth = (ATA-X)*33 where X=ambient pressure at depth 0. John ------------------------------------------------------------ John H. Heimann Sr. Product Manager Oracle Corporation Security Products 500 Oracle Pkwy, Box 659410 415-506-9750 (phone) Redwood Shores, CA 94065 415-506-7226 (fax) --=_ORCL_6618726_0_11919608161820590 Content-Type:message/rfc822 Date: 16 Aug 96 14:09:08 From:"Richard Pyle <deepreef@bi*.bi*.Ha*.Or*>" <deepreef@bi*.bi*.Ha*.Or*> To:JHEIMANN.US.ORACLE.COM,<JHEIMANN@us*.or*.co*> Subject:Re: High altitude decompression Cc:rbell@cp*.or* In-Reply-To:<199608160805.BAA11940@ma*.us*.or*.co*> MIME-Version: 1.0 Content-Transfer-Encoding:7bit Content-Type:text/plain; charset="US-ASCII" > I must say I am tickled by all the folks that immediately say "that's stupid, > it's obvious, it's just a pressure gauge!" I thinking of suggesting to them > that they get out of their armchaies, we drive to Tahoe and do a 30 minute > dive to 300' on trimix, and then find if they are so sure they know what they > are doing! The only thing I thought would be stupid is a computer that gives you the depth in any form other than the pressure equivalent of that depth in seawater plus 1 atm. Aloha, Rich --=_ORCL_6618726_0_11919608161820590--
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