At 07:47 AM 4/7/2011, you wrote:
>On Wed, Apr 6, 2011 at 9:25 PM, M.L. <m@lkeng.net> wrote:
> > Hello all,
> > I'm looking for insight on measuring water flow rate inexpensively. I
> > know about various methods, but one-off solutions are fine for what
> > I'm trying to accomplish.
> > I was thinking measuring differential pressure drop would be the
> > easiest way, but differential pressure sensors are quite expensive.
> > Any ideas?
> >
> > --
> > Martin K.
> >
>
>
>I sent this email quickly last night then realized that I didn't
>specify anything. I want to measure the flow rate of potable water in
>a (<1" diameter) pipe. The temperature may be 55 - 90F and the static
>pressure is whatever normal household municipal water is. I'm thinking
>it's between 35 and 65 PSI.
>
>It doesn't have to be easy to install. I've got full control over all
>the plumbing here (there's a joke in there somewhere.)
>
>This is for an experimental gray water heat exchanger device I have
>going. I appreciate the responses.

Here's a really cheap one (maybe already mentioned from another supplier?)
http://www.seeedstudio.com/depot/water-flow-sensor-p-635.html?cPath=3D6&zen=
id=3D594b89701c7a2015a13064b67aed4f44

I don't see any approvals on it, BTW, so if it blows out and floods
your house while you're away for a long weekend, your insurance might
not be 100% cooperative.

>Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the rewar=
d"
speff@interlog.com             Info for manufacturers: http://www.trexon.co=
m
Embedded software/hardware/analog  Info for designers:  http://www.speff.co=
m



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