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Chris, The sensitivity you refer to is likely due to the O2 Hacker design that uses a radio (non-linear) potentiometer. It goes slow on one side and incredibly fast on the other. If anyone out there is using a PM128 with the non-linear pot, replace it with a 100 ohm linear pot. Replace the existing resisitors with a single 360ohm resistor and you will get rid of the sensitivity so that it will work just like the commercial units. Regards, Patrick -- OxyCheq ... your source for oxygen sensors http://oxycheq.com Chris Elmore wrote: > Chris, > I've made a couple and cross checked them against other homemade > analyzers and factory made analyzers. All were about the same. My only > complaint is the calibration adjustment is too sensitive. You can't beat the > price of the homemade ones either. I have the LCD panel, rheostat, flow > restrictor (set at 5lpm), battery, switch, and sensor mounted to a piece on > aluminum insde an old Pelican case- all for under $100. It just took a rainy > day to put it together. > C > ----- Original Message ----- > From: Christopher Brown <hokiediver@ya*.co*> > To: <techdiver@aquanaut.com> > Cc: <vbtech@ci*.co*> > Sent: Monday, March 12, 2001 10:49 PM > Subject: Homemade 02 analyzers > > > What is the consensus on homemade 02 analyzers? Are > > they accurate enough? > > > > What about flow-through vice "plug-in" quick > > disconnect type 02 sensors? What is the accuracy of > > the measurement in a flow through vice plug in 02 > > sensor? > > > > > > > > __________________________________________________ > > Do You Yahoo!? > > Yahoo! Auctions - Buy the things you want at great prices. > > http://auctions.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'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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