I am in the startup of creating a project where I want to measure the waterlevel in a well at my family's cabin. The well i rather deep, 10.5 meter and about 1.2m in diameter. Maximum water level is expected to be about 7 meter and 1 meter at its lowest point.
So I am looking for a sensor that will be able to measure about about 9 meter down to the water level. If I manage to place a sensor at expected maximum them 7 meter could do, but I rather have the unit easily accessible at the top.
I am thinking a ultrasonic sensor would do the job? But the once I have seen so far appear to have a max range of 5 meter. Do you know of any sensors that would be suitable for the project? If not a ultrasonic sensor is not suitable I would be happy to hear of other options which is fairly easy to setup.