Water Flow Rate Measurement with Flow Sensor | Microautomation.no

Objective

This experiment uses a flow sensor to measure the rate of water flow through a pipe.

Required Components

Water Flow Sensor
Arduino Board (e.g., Arduino Uno)
Jumper wires
Breadboard

Working Principle

The water flow sensor uses a magnetic rotor to generate pulses that can be measured to calculate the flow rate.

Circuit Diagram

Arduino Code


/*
 * Water Flow Rate Measurement with Flow Sensor
 * This code reads the flow sensor data and calculates the flow rate.
 */

const int flowPin = 2;  // Flow sensor connected to digital pin 2
volatile int flowCount = 0;

void flow() {
    flowCount++;  // Increment the flow count when a pulse is detected
}

void setup() {
    pinMode(flowPin, INPUT);
    attachInterrupt(digitalPinToInterrupt(flowPin), flow, RISING);
    Serial.begin(9600);  // Initialize serial communication
}

void loop() {
    flowCount = 0;
    interrupts();
    delay(1000);  // Wait for 1 second
    noInterrupts();
    float flowRate = flowCount / 7.5;  // Flow rate in liters per minute
    Serial.print("Flow Rate: ");
    Serial.print(flowRate);
    Serial.println(" L/min");
}

Results

The serial monitor will display the water flow rate in liters per minute.

Applications

Water usage monitoring
Agriculture irrigation systems
Industrial fluid flow monitoring

Conclusion

The flow sensor provides an accurate and easy-to-implement method for measuring water flow rates, making it useful for a variety of applications like irrigation and industrial monitoring.