Yes, the tube would be filled at all times and I would only want to =
monitor the actual flow.
Impeller is one way to go although I'm looking for something more simple =
:)

Thanks.

Patrik


----- Original Message -----=20
From: "Shawn Yates" <syates@CARETECHNOLOGIES.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, May 08, 2001 6:49 PM
Subject: Re: [EE]: detect waterflow


> Fire alarm compananies detect when water flows through the sprinkler =
system
> and set off an alarm.
>=20
> If the tube starts empty, just an air gap switch that will be shorted =
when
> covered with water would work, unless you are trying to detect FLOW =
not just
> the presence of water.
>=20
> How about a small impeller and and monitor the shaft for rotation.  =
Then you
> could get realy fancy and measure the speed of the flow.
>=20
>=20
>=20
> Just some thoughts.
>=20
> Shawn
>=20
> -----Original Message-----
> From: Patrik Husfloen [mailto:u58611234@TELIA.COM]
> Sent: Tuesday, May 08, 2001 12:21 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [EE]: detect waterflow
>=20
>=20
> Are there any clever ways to detect waterflow in a hose/tube?
>=20
>=20
> /Patrik
>=20
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>=20
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>=20
>=20

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