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Something You Should Know about the Air Flow Sensor

Many people know where the air flow sensor is located in the car. But they don’t understand what the air flow sensor actually does. In fact, the air flow sensor is far more important than we thought. Today this article will introduce the knowledge about air flow sensors that you don’t know.


What is the Air Flow Sensor

Air flow sensor, also known as air flow meter, is one of the important sensors of EFI engine. It converts the inhaled air flow into an electric signal and sends it to the electric control unit. As one of the basic signals for determining fuel injection, it is a sensor that measures the air flow into the engine.


The air flow sensor uses the principle of thermodynamics to detect the flow of the gas medium in the flow channel, and has good accuracy and repeatability. It uses the latest generation of MEMS sensor chip technology with a built-in temperature sensor. Each has a proprietary temperature compensation calibration, and has a linear analog voltage output, which is easy to use.


Various Types of the Air Flow Sensor


  • Valve type air flow sensor


The valve type air flow sensor is installed on the gasoline engine and is located between the air filter and the throttle. Its function is to detect the air intake of the engine and convert the detection result into an electrical signal, which is then input into the computer. The sensor is composed of two parts: an air flow meter and a potentiometer.


  • Kaman scroll air flow sensor


The Kaman vortex is a physical phenomenon. The air passage area and the size change of the vortex generating column determine the detection accuracy. And because the output of this sensor is an electronic signal (frequency), when inputting a signal to the control circuit of the system, the AD converter can be omitted. Therefore, from an essential point of view, the Karman vortex air flow sensor is a signal suitable for microcomputer processing. This sensor has the following three advantages: high test accuracy, simple signal processing; performance will not change.


  • Temperature and pressure compensation air flow sensor


It is mainly used for flow measurement of industrial pipeline medium fluid, such as gas, liquid, steam and other media. It is characterized by small pressure loss, large measuring range, and high accuracy. It is hardly affected by fluid density, pressure, temperature, viscosity and other parameters when measuring volume flow under working conditions.


The Application of the Air Flow Sensor


In many economic fields, accurate measurement of flow has become very important. Nowadays, the air flow sensor provided is basically used to measure the flow rate. The sensor senses the fluid flow and converts it into a usable output signal. Installing the sensor can make the operation easier and more convenient. The number of flowing objects passing in a unit time is called flow, and there are different air flow sensors for different objects. The type of air flow sensor is often distinguished by the measured medium and the method of measurement.


In short, in many fields, accurate measurement of flow occupies an important position. Air flow sensors are also widely used in the economic field. If you are looking for a wholesale air flow sensor supplier, we look forward to being your choice and will provide you with attentive service and high-quality products.

Post time: Nov-24-2021