Example Code for Arduino-Get Air Flow

Hardware Preparation

• 1 x Arduino UNO board
• 1 x F1031V Air Flow Sensor
• Wires

Software Preparation

• Arduino IDE

Wiring Diagram

Other Preparation Work

1. It is forbidden to use the sensor in the environment with strong corrosive gas, toxic gas or explosive gas.
2. Dirt in the gas flow medium will reduce the sensor's service life, so it is recommended to install a 5-micron precision filter at the sensor inlet.
3. When contacting with water or being immersed in water, the sensor may be damaged or the sensitivity of sensor will decline.
4. Pay attention to the polarity of power in case of burning the internal circuit.

Please change the appropriate reference voltage according to mainboard.

Sample Code

#define RANGE              150    //Measurement Range
#define ZEROVOLTAGE        0.5    //Zero Voltage 
#define FULLRANGEVOLTAGE   4.5    //Full scale voltage
#define VREF               5      //Reference voltage

int sensorPin = A0;    // select the input pin for the air meter
float sensorValue = 0;
void setup() {
  Serial.begin(9600);
}

void loop() {
  // read the value from the sensor:
  sensorValue = analogRead(sensorPin)*VREF;
  sensorValue = sensorValue / 1024;
  sensorValue = RANGE*(sensorValue - ZEROVOLTAGE)/(FULLRANGEVOLTAGE - ZEROVOLTAGE);
  Serial.print(sensorValue);
  Serial.println(" SLM");
  delay(500);
}

Result