Fluid Metering and Flow Control

Users can now proportionally meter and electronically vary the flow rate of two fluids at ratios from 1:1 up to 1000:1 at flow rates from 20 µl/min up to 4 l/min by combining the Ratio:Matic dual head metering pumps from Fluid Metering with the V300 stroke rate controller. Ratio:Matic pumps consist of two FMI pump heads direct coupled to a single variable speed drive. Each pump head is independently adjustable, and a variety of pump head sizes are available. The new V300 stroke rate controller is designed for accurate fluid metering in laboratory, R&D, test stands, pilot plants, process, and production applications. The V300 features front panel membrane switches for convenient manual setting of pump stroke rates adjustable in 0.1% increments. Stroke rate can also be controlled electronically through an interface which can accept 420 mA, 05 VDC, and 010 VDC input signals typically provided by process sensors and instrumentation.