captainkirksdog
Member
Hi,
I have a deep water-well that is full of bacterial iron in solution that I use for simple irrigation. I have a float system setup for pump control, but because the water-level changes so slowly, it doesn't work very well. Because of the iron I'm limited in what methods of detection I can use. Probes foul very quickly, optics and magnetics are useless, and floats are too unreliable. What I need is something not too expensive, readily available or buildable, and can be interfaced to logic control. Four points of detection are required; i.e., (bottom up) Extreme low-water shutdown, Off, Pump Enable/Reset, and Overflow.
So far, the best idea I've found is a float connected to a switch buffered by a Schmitt trigger. The problem with this is I can't get the switches to stay dry. Sooner or later, (mostly sooner) they all have failed and I really, REALLY, hate climbing down into the well to replace them.
Anybody got any ideas? Thanks.
I have a deep water-well that is full of bacterial iron in solution that I use for simple irrigation. I have a float system setup for pump control, but because the water-level changes so slowly, it doesn't work very well. Because of the iron I'm limited in what methods of detection I can use. Probes foul very quickly, optics and magnetics are useless, and floats are too unreliable. What I need is something not too expensive, readily available or buildable, and can be interfaced to logic control. Four points of detection are required; i.e., (bottom up) Extreme low-water shutdown, Off, Pump Enable/Reset, and Overflow.
So far, the best idea I've found is a float connected to a switch buffered by a Schmitt trigger. The problem with this is I can't get the switches to stay dry. Sooner or later, (mostly sooner) they all have failed and I really, REALLY, hate climbing down into the well to replace them.
Anybody got any ideas? Thanks.