www.pmmag.com/articles/91921-reverse-osmosis-controller
Reverse Osmosis Controller
July 2, 2008

Electronic Systems Design Inc.’s Model 250C Reverse Osmosis System Controller is a low-cost, reliable system for manufacturers of industrial and commercial water purification systems. It lowers production costs by outsourcing electronic controls and performs all of the functions necessary to efficiently operate a reverse osmosis water system by maintaining water tank levels. It also has a lockout input for pretreatment regeneration, low-pressure shutdown, and more.
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