- Doppler for pipes - 3 Updates
| Tim R <timothy42bach@gmail.com>: Sep 04 05:46PM -0700 On Friday, September 1, 2023 at 6:41:38 AM UTC-4, Jeff Liebermann wrote: > >thought I found an IR imaging apk that really worked. > Perhaps an ultrasonic flow meter? Plenty to choose from: > <https://www.google.com/search?q=ultrasonic+flow+meter&tbm=isch> Those are some pricey meters. I've seen ultrasonic meters used for sanitary sewer flow rates, but usually they're mounted above a notched weir and actually just measure the height. |
| Jeff Liebermann <jeffl@cruzio.com>: Sep 04 09:23PM -0700 On Mon, 4 Sep 2023 17:46:49 -0700 (PDT), Tim R >> Perhaps an ultrasonic flow meter? Plenty to choose from: >> <https://www.google.com/search?q=ultrasonic+flow+meter&tbm=isch> >Those are some pricey meters. Well, if you want cheap, there are paddle wheel flow meters <https://www.google.com/search?q=paddle+wheel+flow+meter&tbm=isch> and turbine flow meters: <https://www.google.com/search?q=turbine+flow+meter&tbm=isch> The problem is these require the paddle wheel or turbine to be inserted inside the pipe, where they also partly obstruct the fluid flow. However, they are cheaper than ultrasonic. Accurate, reliable, cheap. Pick two. >I've seen ultrasonic meters used for sanitary sewer flow rates, >but usually they're mounted above a notched weir and actually >just measure the height. They also use weirs to somewhat limit clogs from FOG (fat, oil and grease) and fatberg obstructions to easily accessible locations. You really don't want to deal with a fatberg: <https://www.google.com/search?q=fat+in+sanitary+sewer&tbm=isch> <https://www.google.com/search?q=fatberg&tbm=isch> -- Jeff Liebermann jeffl@cruzio.com PO Box 272 http://www.LearnByDestroying.com Ben Lomond CA 95005-0272 Skype: JeffLiebermann AE6KS 831-336-2558 |
| Tim R <timothy42bach@gmail.com>: Sep 05 05:26AM -0700 On Tuesday, September 5, 2023 at 12:23:42 AM UTC-4, Jeff Liebermann wrote: > The problem is these require the paddle wheel or turbine to be > inserted inside the pipe, where they also partly obstruct the fluid > flow. However, they are cheaper than ultrasonic. It's been a while since I was hands on in any mechanical rooms. But I vaguely recall we measured flow by pressure differential across an orifice. A flow meter was used for something like make-up water to a boiler, where accuracy wasn't critical and flow volume small. But for a boiler or cooling loop the pressure differential was reliable and cheap. And with 400 or so boiler rooms cost was important. |
| You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com. |
No Response to "Digest for sci.electronics.repair@googlegroups.com - 3 updates in 1 topic"
Post a Comment