Hi
Are you using a specific sensor already?
Regards,
Sara

Hi Sara
Thanks for your reply. It’s this sensor in this website: https://docs.sunfounder.com/projects/kepler-kit/en/latest/pyproject/py_water.html.
Does this sensor have a buffer?
Thanks in advance
Best regards
Diana
 

Hi.
No.
It reads an analog signal. Everything is already explained in the link that you shared.
It doesn’t measure the water level in a tank. It measures the presence or absence of water along the surface of the  sensor (it can give a rough measurement of the volume if the height of the tank is not bigger than the sensor length).

Regards,
Sara

Hi Sara
Thank you for your answer. Is there a sensor can give me how much water in the water container?
Thanks in advance
Best regards
Diana

Hi.
You can use an ultrasonic sensor to measure the distance between the top of the tank and the water level. Then, with some calculations you can have an idea of the water level. 
 
Here’s a great discussion about this topic on reddit: https://www.reddit.com/r/arduino/comments/my4qa4/what_is_the_most_reliable_water_level_sensor/
 
I hope this helps.
 
Regards,
Sara

Thank you so much.

I’ll mark this issue as resolved. If you need further help, you just need to open a new question in our forum.
Regards,
Sara