The three parts that are most frequently found in flow meter are the main component, the transducer, and the transmitter. The transducer's job is to look for fluid leaving the central apparatus. The raw signal from the transducer is then converted into meaningful data by the transmitter. Flowmeters are used to measure a fluid's mass flow rate or volumetric flow rate in various applications. An airflow meter's kind depends on its intended usage. The volumetric flow rate calculates the flow of liquids and gases, respectively.