Tutorial: Reading Water Flow rate with Water Flow Sensor

Hi, I have used your code with the water flow sensor from seedstudio.

When I run the code and slowly pour water into the sensor, I obtain value that exceed the range of the sensor (32 to 500LPM).



I copypasted the code in arduino and the electrical circuit is exactly like the one on the picture. I bought 2 sensor and they both display the same problem.



I would like to know if there anyone else experiencing the same problem? and is it possible that the sensor are broken?