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You evidently have a PM128A, not the orginal PM128 panel mount LCD millivolt meter that is specified in the article on Jim Cobb's web site. The PM128A uses surface mount devices (SMDs) which are extemely minatuture and really not easily changed. As recently as last November, I purchased an original PM128 - not A - from Parts Express in Dayton, OH. Check the PE web site @ <http://www.partsexpress.com/>; they may still have some non-A PM128s left. Also, if I'm not mistaken, the newest version of Vance Harlow's "The Oxygen Hacker's Companion" deals with this issue. Good luck. Bob At 11:48 AM 2/24/2000 -0500, you wrote: >The plans on Jim Cobb's website <http://www.cisatlantic.com/trimix/Analyzer/analyzer.htm> for making an O2 analyzer call for a PM128 circuit board. A new circuit board has replaced the one illustrated on the website but the layout of the new one is completely different than the older one. I tried to contact Jim Owens (who wrote the article) but my email bounced. If anyone knows how to reach him or configure the new CB I'd really like to hear from them. Until this gets figured out I'd caution people from buying the PM128 to make an O2 analyzer. >Thanks, >C. > > >Chris Elmore >College of Liberal Arts >Univ. of SC >(803) 777-1534 office >(803) 348-3055 mobile >Please use this address for all email: chris@sc*.ed* > >-- >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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