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?
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%7Ctoddz%40pgrahamdunn.com%7C78fea31e7e0547257c7308da029589aa%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637825138531803966%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=s9XxP4vQy6p77O5KxNuKNZuSr2xi4xlIw%2FML5ylia5k%3D&reserved=0 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
