8"_SKU__SEN0216 - jimaobian/DFRobotWiki GitHub Wiki

Water Flow Sensor - 1/8"

Introduction

The Water Flow sensor measures the rate of a liquid flowing through it. The YF-S401 water flow sensor consists of a plastic valve body, flow rotor and hall effect sensor. It is usually used at the inlet end to detect the amount of flow. When liquid flows through the sensor, a magnetic rotor will rotate and the rate of rotation will vary with the rate of flow. The hall effect sensor will then output a pulse width signal. Connect it to a microcontroller and you can monitor multiple devices such as your coffee maker, sprinkler or anything else, and control the water flow rate to suit your needs!

  • A 6 mm hose is recommended
  • Avoid unit contact with corrosive chemicals
  • The unit must be installed vertically, tilted no more than 5 degrees
  • Liquid temperature should be less than 120 C to avoid damage to unit

Specification

  • Inner Diameter: 4 mm
  • Outside diameter: 7 mm
  • Proof Water Pressure: <0.8 MPa
  • Water Flow Range: 0.3-6 L/min
  • Voltage Range: 5~12 V
  • Operating Current: 15 mA (DC 5V)
  • Insulation Resistance: >100 MΩ
  • Accuracy: ±5% (0.3-3L/min)
  • The Output Pulse High Level: >4.5 VDC (DC input voltage 5 V)
  • The Output Pulse Low Level: <0.5 VDC (DC input voltage 5 V)
  • Output Pulse Duty Ratio: 50% ± 10%
  • Water-flow Formula: 1L = 5880 square waves
  • Working Humidity Range: 35% ~ 90% RH (no frost)
  • Dimension: 58*35*26 mm/2.28*1.37*1.02 inches
  • Weight: 30g

Board Overview

----------------------------------------------------------
center
                                                            |-------------------------------------------------------------|
                                                            | |                                                         |
                                                             |---------------------------------------------------------|
                                                             | |            |           |          |                 |
                                                              |------------|-----------|----------|-----------------|
                                                              | **Number** | **Color** | **Name** | **Description** |
                                                              ||
                                                              | 1          | Green     | Signal   | Pulse Signal    |
                                                              | 2          | Red       | VCC      | 5~12V           |
                                                              | 3          | Black     | GND      | GND             |  |  |  |

Pulse Signal center

Tutorial

In this Tutorial, we'll measure liquid flow using this sensor.

Requirements

  • Hardware
    • DFRduino UNO R3
    • Water flow sensor
    • Jumper Wires

Connection Diagram

center

Sample Code

/***************************************************
 This example reads Water flow sensor Sensor.

 Created 2016-3-13
 By berinie Chen <[email protected]>

 GNU Lesser General Public License.
 See <http://www.gnu.org/licenses/> for details.
 All above must be included in any redistribution
 ****************************************************/

/***********Notice and Trouble shooting***************
 1.Connection and Diagram can be found here  http://www.dfrobot.com/wiki/index.php?title=Water_Flow_Sensor_-_1/8%22_SKU:_SEN0216
 2.This code is tested on Arduino Uno.
 ****************************************************/
volatile double waterFlow;
void setup() {
  Serial.begin(9600);  //baudrate
  waterFlow = 0;
  attachInterrupt(0, pulse, RISING);  //DIGITAL Pin 2: Interrupt 0
}
void loop() {
  Serial.print("waterFlow:");
  Serial.print(waterFlow);
  Serial.println("   L");
  delay(500);
}

void pulse()   //measure the quantity of square wave
{
  waterFlow += 1.0 / 5880.0;
}

FAQ

For any questions, advice or cool ideas to share, please visit the DFRobot Forum.

More

CAD File link=http://www.dfrobot.com/ shopping from dfrobot store or dfrobot distributor.

⚠️ **GitHub.com Fallback** ⚠️