SCREW PUMPS Flow Meters MPV Series Introduction 1 www.jbj.co.uk/flow-meters.html #DriveLineHarmony Display: » Flow » Pressure » Two temperatures Digital indicator/totalizer FD20S S 311DS 3 2 1 5 V t pulse 1 screw turn (rev) Typical Applications for MPV Series » oil dynamics and hydraulics systems. » power generation (incl. fuel transfer). » dosing systems. » test benches. » precise transfer, sale, and shipment of fuels and lubricants. Specific Versions, on Demand, for: » chemical industry. » machine tools (low lubricating property media, in general). » lubrication for rotating parts in high critical systems. » flow rate consumption in diesel engines. Operating Principle In the MPV Flow Meter 1 , it is the passage of fluid over the set of three screws 2 that causes the device to rotate, unlike the three-screw pump, which moves a fluid when it is driven by an applied force, whether it be an electric motor or a PTO of some kind. The special shape of the screws ensures that their rotation corresponds with exact volumes, quantitatively determined by a highly dependable sensor 3 . The resulting signal, square wave 4 , may be acquired directly by the PLC or processed by dedicated SEIM electronics 5 . 4
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