If you are interested in building a flow sensor, an averaging Pitot tube may be a good choice as a pressure differential producer. By measuring flow velocity, you can easily calculate flow volume. Let me know if you need some help. John ----- Original Message ----- From: "Gus S Calabrese" To: "Microcontroller discussion list - Public." Sent: Wednesday, June 21, 2006 1:01 AM Subject: [EE]: measuring fluid flow in an automotive cooling system > My truck overheats when I am pulling a small load uphill. > I do not think it should overheat. I am working on instrumenting > various parts of the cooling system. I would like to insert some kind > of flow detection in the hose that leads to the top of the radiator. > I would > like to get 3 or 4 bits of flow rate info. Does not have to be > terribly linear. > > Any suggestions ? How do piezoelectrics do in a 130 degree Celcius > wet environment ? > > > Gus S Calabrese AGSC > Denver, CO > 720 222 1309 303 908 7716 cell > I allow everything with "spamcode2006" in the subject or text to > pass my spam filters > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist