An air flow mass sensor has a platinum hot wire in the vent that stays hot at a certain temperature. When air passes through the vent it will cool down the hotwire, so more current is put through the wire to maintain its set temperature.
The amount of current put through to the platinum wire will calculate how much air mass is flowing through the vent.
What voltage did you get when you first powered up the sensor without passing air over the sensors?
1.048v
How did the voltage change when air passed over the sensor?
Increases proportionally according to how much air passes through.
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