Dario,
this isn't exactly that you want, but may be useful due to the similar 
problematics..

http://www.fonema.se/anemom/anemom.html


ciao,
Marco






----- Original Message ----- 
From: "Dario Greggio" <adpm.to@inwind.it>
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Sent: Saturday, February 06, 2010 9:03 PM
Subject: [PIC] Measuring flow using a temperature sensor (and maybe a 
heater)


> We've been considering measuring air flow (at some 1-2 bar) by using a
> temperature sensor (possibly a I2C one such as MCP9800) and maybe a
> heater coupled to it.
>
> Do you think it's doable with some good precision? Of course the other
> method would be using a fan or alike and an encoder but it's quite more
> complicated... :)
>
> thanks for any tip!
>
> -- 
>
> Ciao, Dario
> --
> Cyberdyne
> -- 
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