Flow meters overview

The Sampi Meter consists of a housing in which three rotors turn in synchronized relationship within three cylindrical bores with no metal-to-metal contact within the meter element. Each rotor is supported on either end by a bearing plate through which the rotor shafts protrude.
The bladed displacement rotors alternately move through the two half-cylinder bores of the meter element, while the single blocking rotor rotates within its bore in such a way as to produce a continuous capillary seal between the unmetered, upstream product and the metered, downstream product.
At one end of each rotor shaft is a timing gear. The blocking rotor gear, having twice the number of teeth of each of the displacement rotor gears, rotates at half the RPM of the displacement rotors.
Throughout the meter element the mating surfaces are either flat surfaces or cylindrical faces and sections that are most accurately machined. No oscillating or reciprocating motion within the device permits extremely close and consistent tolerances within the Sampi Meter.
Because the dynamic force exerted by the product flowing through the meter is at right angles to the faces of the displacement rotors, and because the meter is designed so that the rotor shafts are always in a horizontal plane, there is no axial thrust. Therefore, the rotors automatically seek the center of the stream between the two bearing plates thereby eliminating wear between the ends of the rotors and the bearing plates.
The oversize design of the sleeve bearings, as well as the specially selected materials from which they are made, assure maximum throughput before bearing replacement is required.
As a result the Sampi Meter provides unsurpassed accuracy, long operating life and exceptional dependability.