Hey, Its the first time so angry comments please
I got myself a fl-s401a flow rate sensor and I dont see in any place the flow rate.
I checked and it does about 26 rotations per second
I will be happy if someone can say to my solution
Here are the specs:
Frequency: F=98 * Q (L / Min), error: ± 2%
Suitable for 1/4" tube
Maximum Consumption current:10 mA(DC 5V)
Working voltage range:DC 5-18 V
Operating Temp:0-80 ℃
Pressure range: 0-0.8MPa Storage Temperature:-25-80C
Output Waveform:Square Wave,output pulse singal.
When I look for a fl-s401 the search returns a flame sensor, not a flow meter. That is why it is important to post links to technical information on all the hardware devices you use. At this point I cannot help.