On 14 November, 2014 - Robert Helling wrote: > > On 13.11.2014, at 23:04, Anton Lundin <[email protected]> wrote: > > Anton, > > > This came out of a discussion with a frend who had his Uwatec 330 show > > him a depth of 72 meters while his Liquivision Xen showed him 69 meters. > > This was due to that his Xen was set in salinity mode, while Uwatec 330 > > always shows a depth calibrated against fresh water. > > > but we agree that this affects only the “names” we attach to certain ambient > pressures. The actual deco schedules are _not_ affected (besides rounding to > 3m multiples) since they only depend on pressures. There is no point in > comparing 69m (sea water) depth dives to 69m (fresh water) dives, don’t we? >
Yes, from a deco perspective the pressure is the relevant thing, but as stated earlier, a lot of the time our planning depth comes from salinity-independent measurements as done by sonar equipment. Of course we can always re-calculate our sonar-depth to a corresponding "salt-water-depth" but my opinion is that entering the salinity level is simpler. //Anton -- Anton Lundin +46702-161604 _______________________________________________ subsurface mailing list [email protected] http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface
