POSITIVE DISPLACEMENT METER – P.D. METERS – ISOIL IMPIANTI

*ISOIL PD meter series SBM sizes 2”and 3”

ISOIL PD meter series SBM sizes 2”and 3” offers high accuracy and a repeatability of over large range of flow rate. This accuracy remains constant during long periods of use. Visual indication of the flow rate measured can be obtained when associated with mechanical register or electronic flow computer directly mounted on the meter or remote by means of a pulses emitter (see VEGA II or VEGA T leaflets).

Applications

tank trucks loading and unloading
biofuel Blending
aircraft refuelling
petrochemical products transfer in refineries, loading terminals and pipelines
calibration of other meters or tanks (Master Meters)

Filtering and Air Elimination

To assure a measuring accuracy and preserve the meter from damage, the fluid under measurement must be properly filtered and air or gas must be eliminated. Isoil produces a wide range of strainers and strainer – air separators.

Operation

While rotating, the vanes are driven by the internal surface of the single body. This means that the self – lubricating vanes are always in contact with the internal surface of measuring chamber, therefore product leakage is avoided and though high accuracy is granted. The calibration mechanism allows micrometric adjustment. It is not necessary to change gears. When an electronic counter is remote, the meter mounts a pulses emitter or encoder (see Encoder Isoil 6422 data sheet).

*ISOIL BM p.d. meters sizes 3”, 4” and 6”

ISOIL BM p.d. meters sizes 3”, 4” and 6” grant high accuracy in measurement (±0,1%) and a repeatability of 0,02% over a wide range of flow rates. Correct usage and maintenance ensure this accuracy through long periods of use. Measured flow rate can be displayed on a mechanical register or, thanks to a pulses emitter, on an electronic counter (e.g. ISOIL mod. VEGA T, VEGA II and VEGA 3).

Applications

» tank trucks, tank wagons and barges loading/unloading

» aircraft refueling

» transfer lines

» calibration of other meters and/or tanks (Master Meter)

Filtering and air elimination

In order to assure precise measurement and preserve the meter from damage, the fluid under measurement should be properly filtered and air or gas must be eliminated. Strainer air separators (e.g. ISOIL mod. SFA, SFDA, FDA, DSH, DSV) or strainers (Y strainers) together with air separators (ISOIL mod. DV) are therefore required. Working principle Fluid enters the meter trough the manifold thus exerting pressure on the vanes and rotating the rotor inside the measuring chamber. Here the vanes, made of self-lubricating material, flow on the internal surface of the chamber, thus preventing leakage and granting high accuracy in measurement.

Since the measuring chamber has a fixed and known volume for each meter type, flowing liquid can be measured. Thanks to a seal mounted on the front cover or to a magnetic drive, a shaft connects rotor movement to a mechanical or electronic counter.

In this way the number of rotor rotations can be counted and the total amount of fluid is then calculated by multiplying the number of rotor rotations by the volume of the measuring chamber.

*ISOIL PD meter series LBM sizes 8” and 10”

ISOIL PD meter series LBM sizes 8” and 10” offers high accuracy over a large range of flow rate. This accuracy remains constant during long periods of use. Visual indication of the flow rate measured can be obtained when associated with mechanical counter or electronic flow computer directly mounted on the meter or remote by means of a pulses emitter (see VEGA II or VEGA T leaflets)

Applications: