Are Your Chemical Metering Pumps Accurate Or Repeatable? (And Why It Matters)

Water treatment processes rely on chemical additions to achieve desired outcomes. This can include disinfection, pH control, or the removal of contaminants. In today’s environment, tolerances for these outcomes are tight, and too much deviation can put communities at risk and result in regulatory action, not to mention time and money wasted adjusting chemicals. This drives treatment managers to purchase the most accurate chemical metering pumps available.

While accuracy is important, the real lynchpin in process control is the repeatability of the pump. A pump’s accuracy refers to how close the measured dose is to the true or desired amount, while repeatability is its ability to deliver the same dose consistently over multiple dosing events. Repeatability is the unsung hero that ensures consistent and predictable dosing minute after minute, day after day. This article will explain why the difference between accuracy and repeatability matters and how each affects treatment processes.