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Old March 3rd, 2014, 10:43 AM   #2
Tom Jenkins
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Join Date: Apr 2002
Location: Milwaukee, WI
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You don't show the "hydrostatic level sensor" in your diagram - to me this implies an analog signal. If that is the case then this essentially a PID or similar feedback control with pump speed proportional to level.

On the other hand, based on your diagram, I suspect that what you really want to do is use level switches to control the pump speed, with a different preset pump speed at each level. That is also feasible and, if you set the speeds properly, should do the job.

Neither system is unusual or particularly complex programming. Whether it is easy or not is a function of your skill level.
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