But then the GP is the same as the DP version, w/o the second port. Why even make the GP version? Would be nice if they made it with 2 outputs -- one for P1 > P2 and the other for P1 < P2. ----- Original Message ----- From: "Paul Hutchinson" To: Sent: Monday, March 11, 2002 9:08 AM Subject: Re: [EE]: Motorola MPX pressure sensors -- AP vs GP > IIRC, AP is absolute pressure measurement and GP is gauge pressure > measurement. > > The absolute sensor has an internal vacuum reference and the gauge sensor > uses the ambient atmospheric pressure as the reference. You use gauge > measurement for things like scales and tire pressure and you use absolute > for measurements like barometric pressure. > > I think they also make a differential pressure sensor that has a separate > pressure input port for supplying your own reference pressure. > > Paul > > > > > Anyone know what the diffs are between the AP and GP versions > > of the motorola MPX4250, MPX5700, etc sensors? The datasheet > > doesn't seem to be too clear on this. What exactly does "gauge" > > mean on the GP versions and how would the output differ from > > that of the AP versions? > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body