On 26 Sep 97 at 13:10, Pasi T Mustalahti wrote:

> On Fri, 26 Sep 1997, Steve Smith wrote:
>
> > 1. Consider a car with a fuel computer fitted and use the information
> > supplied.
> > 2. As above but disconnect the fuel computer thus giving a raw transducer
> > output and reinvent the wheel.
> >
> PTM: I'm looking for a new method. Not only for a car because there
> is many comparable situations, where some fluid flow should be
> measured. For example in hospitals and chemical laboratories.

Steve's solution seems best for cars - especially when you consider
that every car made in the last 10 years would have the
computer/transducer already, just to meet exhaust emission standards.
 Only the up-market models give a mpg / l/100km readout though, so
intercepting the blips the transducer produces and converting to
liters would be necessary.
But you want a new method.  Do you mean a new method of monitoring
flow, other than the conventional flow sensor, which basically turns
a paddle wheel with magnet/s in it past a hall effect device.  Or
what?  One way would be to use a metered dose pump, this way you know
how much is flowing.
MikeS
<mikesmith_ozNOSP*M.relaymail.net>
(remove the you know what before replying)