The 3 bar GM MAP sensor has been well characterized by the DIY EFI community.
Linear output. 1.1kPa @ 0v and 315.5kPa @ 5v. On Sat, May 28, 2022, 11:44 AM gene heskett <[email protected]> wrote: > Greetings all; > > I'm getting frustrated, but I know it has to be out there, someplace. > I need a differntial air pressure sensor, differential so it references > local barometric as its reference zero, and up to 10 psi, with a 3 wire > analog output. > I've solved the control aspect, but not how to detect a pressure to > accomplish the control. > > automotive EGR types seem seem the most promising as they are affordable > and 2 port gismo's but all I can find just lists the vehicles it fits and > works with, but zero info on how to hook it up and get an analog reading > out of it. "MAP" sensors whose internal reference is a good vacumm can > have their signals clipped and massaged into something usable, but so far > I've bought 4 w/o finding a working one that actually reads the 14.7 psia > of normal air. > > So how are you folks solving that problem? > > Or are you burning up the shop compressor feeding your misters? I can't > see that as being an acceptible solution since none of those have an > intake muffler so you can still hear yourself think. > > What I have cobbled up at the moment is giving me more than enough air to > run a mister, and I can't hear it running over the 2 fans in this 6040 > mill. One in the vfd is really noisy. > > Thank you. > > Cheers, Gene Heskett. > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author, 1940) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > > > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
