On Thursday, 10 March 2022 09:00:05 EST Todd Zuercher wrote: > You have a link to the sensors you have? Maybe your sensors are 0-10 > bar in stead of psi and 10psi isn't high enough to accurately register > on a 0-150psi sensor? > The only identifying stamp on the device is an acid etched 10PSI on one of the wrench flats. Bag says X00256MAAV. Came from amazon. China made of course.
Thanks Todd. > Todd Zuercher > P. Graham Dunn Inc. > 630 Henry Street > Dalton, Ohio 44618 > Phone: (330)828-2105ext. 2031 > > -----Original Message----- > From: gene heskett <[email protected]> > Sent: Thursday, March 10, 2022 7:56 AM > To: Enhanced Machine Controller (EMC) <[email protected]> > Subject: [Emc-users] pressure sensor? > > [EXTERNAL EMAIL] Be sure links are safe. > > Greetings all; > > Looks like I struck out, I can't get a means anthing output from two > supposedly 0-10 psi pressure thingies that are supposed to output .5 > to 4.5 volts for 0-10 psi of the manifold they are screwed into. > > History: > > I bought 5 of those mini air compressors I waxed poetic about a couple > weeks ago. Then embarqued ob an effort to print a manifold to combine > them, finally getting a print density that doesn't leak like a > spaghetti drainer. This to be used in place of shop air, to drive the > mister on my 6040 gantry mill. > > Finally getting a solid enough print of the manifold to hold about what > these little diaphram compressors can do, I'd guess I have a good 10 > psi wwhen its plugged off while they are running and they are > delivering more air than the mister actually needs. > > So I thought I'd feed a pressure sensor into one of the first 4 ports > of a mesa 7i76, have the mesa digitize it, which should give me around > 6 digits of active range, which should be enough to hal up some sort > of pwmgen control over how much power they get, with an eye to setting > the feedback to maintain a 2 to 3 psi at the mister nozzle pressure. > > But neither of the $23 sensors I bought, actually works. black to -, > red to 5v, green to dvm on my test table, one rests at nominally 1 > millivolt, the other at around 27 millivolts which doesn't change with > the applied pressure. > > What would you folks use in that situation? Simplest would be something > I can just push a 3/16" vinyl hose onto its pressure port barb. > Something with an output signal the mesa 7i76 can digitize? > > Thanks all. > > 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://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists > .sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Ctodd > z%40pgrahamdunn.com%7C78fea31e7e0547257c7308da029589aa%7C5758544c573f47 > cebee96c3e0806fb43%7C0%7C0%7C637825138531803966%7CUnknown%7CTWFpbGZsb3d > 8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3 > 000&sdata=s9XxP4vQy6p77O5KxNuKNZuSr2xi4xlIw%2FML5ylia5k%3D&rese > rved=0 > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > . 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
