Water flow sensor unable to get readings

Question

I connected my "arduino(nano)" to "water flow sensor" and wrote a code which simply prints the readings like 0-1023 and tested it. First i got the readings but now i'm not getting it.
My code looks something like this.

void setup(){
 Serial.begin(115200);
}

void loop(){
 int vla=analogRead(2);
 Serial.println(vla);
 delay(1500);
}

and my connection.

Sensor to Supply module
Vcc --> 5v
Gnd --> Gnd

Sensor to Arduino(Nano)
Sig --> D2

Answer 1

Sensor to Arduino(Nano) Sig --> D2

Your connections are wrong.

int vla=analogRead(2);

is reading from analog channel 2, which is pin A2 on your Nano, not D2

D2 is not an analog pin and thus you can't use it with analogRead().