thats just it, i wont be metering flows, it will be two seperate meters in two seperate containers, one will be the base methoxide and one will be directly in the oil tank. the volume of oil will be entered by hand into the computer, and the pH of each substance will be entered electronically, removing any human clumsiness and gaining an accuracy my daft fingers never could, and the fewer mechanical parts there are means the less chance there will be a breakdown. after a time when i can build another accessory i could measure and enter the volume of oil electronically also. with photodetection, you have to be very picky about timing, and to adequately time something with an analog system would be extremely complicated and not likely to work with the equipment i have in my posession. it would have been possible two years ago, but i no longer have access to the college lab, and cannot afford the 7500$ bits of equipment they so happily supply their students.
----- Original Message ----- From: "Joe Street" <[EMAIL PROTECTED]> To: <Biofuel@sustainablelists.org> Sent: Thursday, March 16, 2006 8:29 AM Subject: Re: [Biofuel] automating titration > Hey Jason; > > If you are bent on doing this, why not approach it from a different > angle? Make a system that imitates what you do yourself, instead of > trying to do it numerically just make a system that does what you do. > It could all be done by way of gravity feed and counting drops by use of > optical sensors. You add a few drops of indicator and then keep adding > titration solution until the indicator goes off and stays for 10 > seconds. That's 8.4 ph. Again a photosensor is used to detect the > colour change condition. > This will for sure work and eliminates much of the problem with trying > to meter flows. > > Joe _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
