Rate of flow of water is measured as liters per hour or cubic meters.
Water flow sensor diagram.
Water flow sensor consists of a plastic valve from which water can pass.
In our project we connected the water flow sensor to a pipe.
The water can be injected from one end and water flows through the other end.
Water flow sensor for flow rate volume measurement using arduino code along with.
Internally the output pin of the hall effect sensor is pulled high on the circuit board itself as you can see in the breakdown image show above.
Arduino water flow sensor working.
If you want to measure the water flow in a network of water pipes or you can place just before a water tap to measure the water flow of single tap.
The sensor may be placed after the main gate valve of tank.
Hence i have not used any external pull up resistors.
There will be no interrupt signal seen at the pin 2 of the arduino and the count of the flow frequency will be zero.
Water flow sensors are installed at the water source or pipes to measure the rate of flow of water and calculate the amount of water flowed through the pipe.
The circuit diagram for arduino water flow sensor interface is shown in the image below.