Re: Water Flow Meter



On Mon, 28 Jul 2008 20:39:14 -0400, "Michael Kennedy"
<mikek400remthis@xxxxxxxxxxx> wrote:

Does anyone know where to get a water flow meter that will close or open a
switch when water is flowing? I have an AC unit that uses water to cool
itself and it produces 110 deg water if you reduce the flow enough.

Ooh, that sounds like a *good* move... (If you want to damage the HVAC
unit, that is!) I'd make sure that reduced flow is within the
manufacturer's ratings, before going any further.

I'm
trying to build a setup that will switch between the on demand hot water
heater and the AC unit for the house. The major difficulty is determining if
there is water flow to the hot water lines in the hosue..


There are switches that do just what you describe. Used in industrial
applications frequently for both similar reasons, or for safety
shutoffs when flow fails for some reason.

Many are simple vane or moving ball magnetic reed switches. You could
build one if you wanted with some simple parts. Not sure you'd really
want to however.
.



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