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To that end, AguaClara engineers have been developing a Chemical Dose Controller (CDC) which utilizes principles such as gravity, differences in head pressure, major losses in pipes, etc. to predictably meter process chemicals. The first CDC developed by AguaClara engineers was the Linear Dose Controller, named so because of the linear relationship that exists between flow and the head-loss that occurs as fluid flows through a pipe. This was a simple design that utilized the predictable major head-loss which occurs in a small diameter pipe this principle to meter the flow, and therefore the chemicals, administered to the plant. This relation only holds true under laminar flow conditions and therefore fails as plants increase in size because the required increase in chemical delivery rate causes the fluid to enter the turbulent range.
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