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Author Topic: Water management system  (Read 9117 times)

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cheerio

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Re: Water management system
« Reply #15 on: September 13, 2012, 04:22:11 AM »
I filled half of the cistern with fresh water. the water level measurement was very precise <1cm. After a while we had a rainy week and the measurement screwed totally up. The deviation was about 10cm. I will calibrate the meter again when there is only rain water left.
I am curious about what parameter changed the measurement so extreme. If i knew i could make this sensor adapting.


kam

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Re: Water management system
« Reply #16 on: September 16, 2012, 18:58:46 PM »
i totally put my money on water composition. rain water can have much much less PH and different density than normal water.

cheerio

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Re: Water management system
« Reply #17 on: September 16, 2012, 19:04:00 PM »
absolutely kam. but what parameter of the water composition is responsible? I bet the PH has nothing to do with it. Maybe the EC?
« Last Edit: September 17, 2012, 00:00:26 AM by cheerio »

kam

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Re: Water management system
« Reply #18 on: September 16, 2012, 20:57:19 PM »
probably the density and the impurities which lead to non-uniform liquid

cheerio

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Re: Water management system
« Reply #19 on: April 01, 2016, 01:26:04 AM »
Did work on this for a while longer. and right now i am rebuilding all of it because it looks like shit ;)
i want it to be tight and nice. will put something more up here soon