Paul,

Can you remind me how you generated your mass flow vs. voltage data
for a hot wire MAF?  Was the data published somewhere?

Matt-

I don't think that was me but can you forward the message or messages you are referring to?

I suggested holding it out the window of a moving car.

To convert it to a pulse width.
It can be done for sure using a saw tooth wave generator and a comparator.
The question then becomes "how linear is the saw tooth weave generator.

Paul Lamar