Article View: sci.electronics
Article #9048Re: Cheap water flow sensor?
From: William K. McFadden
Date: Tue, 18 Dec 1990 21:01
Date: Tue, 18 Dec 1990 21:01
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In article <4390@alliant.Alliant.COM> holbrook@alliant.alliant.com (Mark Holbrook) writes:
>I need a device to give me an binary electrical indication that water
>is flowing/not flowing through a standard half-inch domestic water
>pipe.
This is only a partial solution, but you can detect the turn-on of
hot water by the temperature rise on the pipe. You can detect the
flow rate with two sensors. This only works at startup, though.
--
Bill McFadden Tektronix, Inc. P.O. Box 500 MS 58-639 Beaverton, OR 97077
bill@videovax.tv.tek.com, {hplabs,uw-beaver,decvax}!tektronix!videovax!bill
Phone: (503) 627-6920 "The biggest difference between developing a missle
component and a toy is the 'cost constraint.'" -- John Anderson, Engineer, TI
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arc1-ca.pugleaf.net!utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!samsung!dali.cs.montana.edu!milton!ogicse!zephyr.ens.tek.com!videovax!billReferences:
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Path: arc1-ca.pugleaf.net!utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!samsung!dali.cs.montana.edu!milton!ogicse!zephyr.ens.tek.com!videovax!bill From: bill@videovax.tv.tek.com (William K. McFadden) Newsgroups: sci.electronics Subject: Re: Cheap water flow sensor? Message-ID: <6229@videovax.tv.tek.com> Date: 18 Dec 90 21:01:17 GMT References: <4390@alliant.Alliant.COM> Reply-To: bill@videovax.tv.tek.com (William K. McFadden) Distribution: na Organization: Tektronix TV Measurement Systems, Beaverton OR Lines: 13