Q. What does the air flow meter do?

Answer

There is a gadget called an air flow meter that monitors the volume of air passing through a given conduit. The apparatus measures the mass of air flowing through the tube per unit time rather than its volume. Consequently air flow meters are only a specialized form of mass flow meters. The standard unit of measurement for mass air flow is the kilograms per second (kg/s). To measure air density the most cutting-edge technology is a hot-film sensor. There is a sensor plate built in onto which a thin film of resistances has been placed. This allows for speedy and precise monitoring of any developments.