How are automotive air flow sensors classified?

[LaCatherine]

Automotive air flow sensors can be categorized into the following types: 1. Flap-type air flow sensor: Installed between the air filter and throttle in gasoline engines, its function is to detect the engine's intake air volume, convert the detection results into electrical signals, and input them into the microcomputer. This sensor consists of two parts: an air flow meter and a potentiometer. 2. Karman vortex air flow sensor: To overcome the shortcomings of the flap-type air flow sensor, i.e., to extend the measurement range while ensuring measurement accuracy and eliminate sliding contacts, a compact and lightweight air flow sensor was developed, namely the Karman vortex air flow sensor. 3. Temperature and pressure compensated air flow sensor: Mainly used for flow measurement of medium fluids in industrial pipelines, such as gases, liquids, steam, and other media. Its characteristics include small pressure loss, wide range, high accuracy, and it is almost unaffected by fluid density, pressure, temperature, viscosity, and other parameters when measuring working condition volumetric flow.