:: This is for an experimental gray water heat exchanger device I have
:: going. I appreciate the responses.

As I mentioned in my post,

This may do the job for you US$10.90. http://futurlec.com/Flow_Sensor.shtml

"
1.5 to 25.0 L/min Hot and Cold Water Flow Sensor
Just arrived our new range of digital flow sensors, these units are ideal=20
for use in water conservation systems, storage tanks, hot water systems,=20
irrigation systems and much more. The sensors are solidly constructed and=20
provide a digital pulse each time an amount of water passes through the=20
pipe. The output can easily be connected to a microcontroller for=20
monitoring water usage and calculating the amount of water remaining in a=20
tank etc.

This flow sensor is suitable for a standard 1/2" pipe and can be easily=20
inserted into a standard piping system. A wide supply voltage can be=20
connected to the unit. The unit is constructed of long-life polymer and is=
=20
suitable for outdoor mounting. These easy to connect units are ideal for=20
use in environmentally friendly household water management systems.


=20

Part Code: FLOW25L0
 Pricing=20
Features
Flow Rate 1.5 - 25.0 liter/min=20
Digital Output=20
Fitting for 1/2" Pipe=20
Suitable for Hot and Cold Water Systems=20
Open Collector Output=20
Water Temperature: 0 - 80oC=20
Supply Voltage: 2.4 - 26V=20

"
=20
Colin

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cdb, colin@btech-online.co.uk on 7/04/2011
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Web presence: www.btech-online.co.uk =20
=20
Hosted by:  www.justhost.com.au
=20
=20

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=20

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