I had a tough time actually getting this information out of the company I'm dealing with. I believe the voltage actually does swing negative and positive in relation to the pressure placed on it. The engineer I taked to said it worked both ways so I'll take his word on it. They sent me a couple of samples though. Aaron ----- Original Message ----- From: Mark Perri To: Sent: Tuesday, June 04, 2002 3:09 PM Subject: Re: [PIC]: PIC16LF627 and a wheatstone bridge. > A.J., > > That pressure sensor measures gauge pressure (0 psi = 1 atm), > not absolute pressure. Does the voltage actually swing negative > when the pressure drops below atmospheric? Usually the > pressure gauges I work with will just stop at 0 V. > > Mark > > >At 04:23 PM 6/4/02 -0400, A.J. Tufgar wrote: > >>To answer pauls questions: > >>1. This is the sensor I'm using from digi-key: MSP6800-ND > >>2. It's 0-5 psi guage. > >>3. All I need to detect is any negative pressure at all (so very low > >>res.) > > -- > 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