Originally Posted by
bob115
I purchased an OS-1 with the intention of placing it near the bottom of my ATO container to indicate when it needs to be refilled. I dose Kalk in my ATO, but only mix in a given quantity and do not leave undissolved kalk at the bottom.
I have the magnetically mounted one, so the cord would be in the container. I suppose I can drill and mount in the side, but I'd prefer to not have holes in the container to avoid leak paths. I assume life will be reduced based on the harshness of the hydroxide solution.
Has anyone used one of these in such a way yet? I'm concerned that the film/crud that forms from the kalk reacting with the air will foul the sensor before the container is empty. Even if I have to wipe it off each refill, its not a large problem, but I do need it to work once per fill cycle.
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