Patent attributes
A system and method of flow rate compensation is provided to allow precise volume dispensing over widely varied and varying input process media pressure and flow conditions. This system utilizes empirical data of actual flow rate versus flow rate measured by a flow meter to characterize flow meter non-linearities. This data is used to generate a compensation control curve. The system controller receives flow data from a flow meter in the field and calculates pulse duration of the output of the flow meter. The compensation control curve is then used to determine the volume of process media flowing at any given time. This instantaneous volume information is added to an accumulator to determine the volume of process media dispensed. This volume is compared to a target volume. Once this target volume is reached, the flow of process media is stopped.
