General > General Technical Chat

Water Flow in Pipe

(1/1)

jpanhalt:
I am working on my hydronic heating system.  It has had several modifications (at one time, it allowed 3 fuel sources) and some don't make sense now.  So far, I have relied on measuring temperature/flow with my hands.  A 10°F difference can be detected, but I want an actual relative flow.

Here's a previous thread on EEVBlog without an answer: https://www.eevblog.com/forum/beginners/measuring-water-flow-in-a-pipe/msg3699118/#msg3699118

I want a method that clamps on and is cheap.  There are two on Amazon:
https://www.amazon.com/HFBTE-TUF-2000B-Ultrasonic-DN25-100mm-Transducer/dp/B07S21VBWT/ref=sr_1_2_sspa?gclid=EAIaIQobChMIz7vxgYjQ9AIVs8mUCR1-PQxwEAAYBCAAEgJ7q_D_BwE&hvadid=409972621594&hvdev=c&hvlocphy=1024046&hvnetw=g&hvqmt=b&hvrand=6283237557618691081&hvtargid=kwd-15429931&hydadcr=20195_11120261&keywords=ultrasonic+flow+meter&qid=1638824782&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzN0tXME1QSE5NOUhWJmVuY3J5cHRlZElkPUEwMzEwNDM0MzBKUzlaUFYySExXSyZlbmNyeXB0ZWRBZElkPUEwNzI2NTA5TkxHOVZXNTlaU1RNJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

https://www.amazon.com/dp/B07S66TKKJ/ref=sspa_dk_detail_1?psc=1&pd_rd_i=B07S66TKKJ&pd_rd_w=K48ow&pf_rd_p=887084a2-5c34-4113-a4f8-b7947847c308&pd_rd_wg=mBHKJ&pf_rd_r=RBTBH8Z8VVEWKKEQSG7Z&pd_rd_r=e247ac22-dbb5-4100-ba44-0710bb898844&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFSU1pMRlgwUE00WUEmZW5jcnlwdGVkSWQ9QTA1OTU3MzMyUTdQNllTSko2RFBBJmVuY3J5cHRlZEFkSWQ9QTA5NDU3ODIxSVJYTDM1MTdDTEtTJndpZGdldE5hbWU9c3BfZGV0YWlsJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

Any experience with either or others in the same price range (<$400)?  I am not turned on by the videos.

SmallCog:
I haven't used those particular flow meters but have played around with the more expensive ultrasonic flow sensors that they're immitating

Only gripe I have with them is that they're fiddly to get right when setting them up on a pipe.

We were intending to use them to field verify EM flow meters but found them to be more trouble than they were worth. By the time we'd mucked around setting them up we would have had the 4 bolts undone and swapped the flow meter for a known good one (and compared the reported flow)

I know nothing about hydronic heating to know if they'd be any good for your application - I live in a place where cooling houses is the challenge not heating them

Navigation

[0] Message Index