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This work by these two gentlemen was successful in the Bridge and is also present in the Nitek line of computers. Many thanks to Randy and Bill for their contributions to the advancement of our "sport". Dell Motes Dive Rite 117 W.Washington St. Lake City, Fla. 32055 www.Dive-Rite.com -----Original Message----- From: Terrence <tjustice@ir*.co*> To: techdiver@aquanaut.com <techdiver@aquanaut.com> Date: Thursday, October 29, 1998 4:32 PM Subject: Question: CNS/O2 Repetitive exposures >Forwarded private response: >-------------------------- > >Dear tj: > >Feel free to post this on the techdiver list. > >My company, Underwater Applications Corp, contracted Hamilton Research to >develop the oxygen loading algorithm for my customer, Seiko-Epson Corp, for >use in the Dive Rite Bridge computer. I co-authored the paper with Bill >Hamilton that was presented at the UHMS workshop in Halifax that same year >(I think 1992). The 90 minute half time that you mention in your post was >developed by Hamilton and I to use in this algorithm. The method allows for >full recovery in 9 hours as long as the CNS clock was not exceeded. If the >CNS clock is exceeded, then after 9 hours the computed value for the CNS >clock (what we call "oxygen limit index") may be a number of interest >(something more than 1% or so). The method provides conservative coverage >for both CNS and pulmonary toxicity for all dives other than something like >saturation or repetitive saturation. > >Your dive computer probably requires that the dive computer either be stable >at the surface for 24 hours or maybe until the dive computer is totally >clear, in order to reset the CNS O2 clock. They may have wrote the code this >way to stay in keeping with the more widely known NOAA and Navy >publications, or because they were unaware of the Bohrer-Hamilton paper >presented at UHMS, or because their model was developed before the >publication of this paper. > >This probably doesn't help you much, but I thought you might find it >interesting. >Sincerely, >C. Randy Bohrer, President >Underwater Applications Corp >15 Brewster Rd >Framingham, MA 01702 >tel: 508-628-9520 >fax: 508-820-3337 >http://www.geocities.com/~uwapplications > > >-- >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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