Airflow meter sensor An air flow meter sensor, commonly known as a Mass Air Flow (MAF) sensor in vehicles, measures the amount (mass) of air entering an engine to ensure the correct air-fuel mixture for efficient combustion and performance. They are also used in various industrial and HVAC applications. Types of Air Flow Sensors The main types of air flow sensors for automotive applications use different operating principles: Hot-Wire Mass Air Flow (MAF) Sensor Description: This is the most comm