Description
What it is
The DB-268 Hydroelectric Flow Sensor Water Flow Meter is a device for measuring water flow in irrigation, monitoring, and control systems. It operates on a 12V DC supply voltage.
Features
- Operating Voltage: 12V DC
- Water Flow Measurement Range: 2.5-25L/min
- Connection: G1/2
What it is for
Ideal for projects requiring water flow monitoring and control, such as automatic irrigation systems. Can be used by beginners and experts.
Tutorial: How to Use Flow Meter 2.5-25L/min
This sensor measures water flow for projects that require flow control. Useful for beginners and intermediates.
What you need
- Flow Meter 2.5-25L/min DB-268
- Arduino
- 12V DC Power Cable
- 10kΩ Resistor
Steps
- 1. Check that the flow meter works with the DC12V supply.
- 2. Connect the 12V power cable to the flow meter.
- 3. Connect the flow meter to pin A0 of Arduino.
- 4. Connect the 10kΩ resistor between GND and pin A0 for protection.
- 5. Load the Arduino code.
- 6. Check the datasheet for further details.
- 7. Test the water flow and verify the reading.
- 8. Configure the code to display the data on an LCD or send it to an app
Example code
```
void setup() {
Serial.begin(9600);
}
void loop() {
int flow = analogRead(A0);
Serial.println(flow);
delay(1000);
}
```
Mini project
Build an automatic irrigation system in 30 minutes using the flow meter to control the water flow.
Common mistakes
- Do not use voltages other than 12V DC.
- Do not connect the flow meter directly to Arduino without a resistor.
- Do not read the flow directly without calibration.
- Do not forget to check compatibility with your project.
Recommended accessories
- LCD Display
- Water Pump
- Level Sensors
- 12V DC Power Cable
Frequently asked questions
Does the flow meter work with voltages other than 12V DC?
Check the datasheet for further details.
How can I calibrate the flow meter?
Follow the specific instructions in the datasheet.
Does the flowmeter work with flows above 25L/min?
No, the flowmeter works in the range 2.5-25L/min.







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