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Waterwell (lemmy.world)
submitted 9 months ago by to c/homeassistant@lemmy.world
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Any experiences with measuring the water level in a well? My well is less than 5 Meters deep and 20 Meters from the house (no electricity available (yet, but who knows)

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[–] [S] 1 point 9 months ago* (1 child)

In that case, just a tube and a pressure sensor will do, no need to pump air. As the water level rises air pressure will build up in the tube. Mounting it in the well might be a challenge, but also an easy setup.

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  • [–] 2 points 9 months ago*

    It is much more accurate if you use the pump. I tried just measuring the pressure in the tube from the water column, it was all over the board and the resolution sucked, probably 10X worse. Using the pump fixes that because you aren't just measuring how much the water compresses the air, you're measuring exactly what pressure it takes to push out the bottom, which is exactly the water column. It doesn't take much of a pump if all you're pressing against is a few feet of water. Something like this: https://www.aliexpress.com/item/1005009288427024.html

    I'd just tie it to a heavy nut and drop it in the well. I probably wouldn't even measure it, just calibrate on some known water levels and watch it for a while.

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