First one Ive found in the UK thats not stupidly expensive..
http://www.leftclicks.co.uk/userimgs...flowsensor.htm
The aqua computer site doent load for me..
Its cheap.. Dunno what the output is but its probably 1 or 2 pulses per l/m, iirc thats what most digital flow sensors do?
Does anyone know the accuracy of this? or suggest a better one for similar price...?