On Saturday, 28 May 2022 23:47:37 EDT Danny Miller wrote: > Here ya go, choose whatever pressure range you want. But here's the > thing: most technical parts are now using BPT, aka "G"/DNx threads (not > to be confused with GHT "garden hose thread"). This is G1/4 aka DN8. > All the USA hardware store stuff is NPT (MPT,FPT) and they have the > same diameter and thread pitch but G thread profile does NOT seal with > NPT, even with thread tape. Well, TBH we've sealed them before with > like 10 attempts with way too much thread tape but in general no. Of > course G seals just fine with G, with thread tape. > > I just bit the bullet and started building everything with G threads > until I have no choice but to switch to NPT. > > https://es.aliexpress.com/item/2255800789691504.html?spm=a2g0o.order_li > st.0.0.5430194d4pWxuF&gatewayAdapt=glo2esp4itemAdapt
can't find the english button. I have 2 of those, neither actually works. Thank you for the leg work, its appreciated. > On 5/28/2022 10:40 AM, gene heskett 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. > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
