Pasi T Mustalahti wrote:
>
> On Mon, 26 May 1997, Mike Smith wrote:
>
> > On 26 Sep 97 at 13:10, Pasi T Mustalahti wrote:
> > > On Fri, 26 Sep 1997, Steve Smith wrote:
>
> > 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.
>
> PTM: I mean new in that meaning, that in the mails about the accelerometer
> there came many nice ingenious methods. It would be nice to see if
> somebody can find a new solution to an old problem.
>
> If we have a system that doesn't move, where we have good space around and
> the result have not to be 'realtime' we could use cups... I try to make a
> picture
>
>                           o    -----drops goming down
>                           o
>
>                      \      B   /
>                        \ ---- /   ---fluid in the cup
>                     A    \  /
>                 ----------O   ------axel
>
> When the cup B fills, the system tilts around the axel. fluid flows out of
> the cup and the drops start dropping to cup A. When it fills, the system
> tilts again, fluid flows out of cup A and cup B starts filling.
>
> This system works only in stabile environment.

Aaah! - so you want to measure drops? It is easy then - use a piezo
electric
transducer to 'measure' the weight of the drops.


                           o    -----drops goming down
                           o

                         ----    ---sensor (slightly slanted)


--
Friendly Regards

Tjaart van der Walt
mailto:tjaart@wasp.co.za
 _____________________________________________________________
| WASP International http://www.wasp.co.za/~tjaart/index.html |
|       R&D Engineer : GSM peripheral services development    |
|   Vehicle tracking | Telemetry systems | GSM data transfer  |
|    Voice : +27-(0)11-622-8686 | Fax : +27-(0)11-622-8973    |
|              WGS-84 : 26010.52'S 28006.19'E                 |
|_____________________________________________________________|