Superior Accuracy at constant flow: With all other conditions being constant , the Sampi Meter does not vary more than 0.05% in repeatability over entire range and beyond.
Accuracy over the widest range of flow: The Sampi Meter has a most ideal combination of minimum seal or slippage area with lowest pressure differential across the seal . This results in better accuracy over a wide range of flow than available in other type of commercially produced, positive displacement meters.
There is no metal-to-metal contact within the meter element ... and no
contact means no wear … no wear means no increase in clearances …
Accuracy regardIess of pressure fluctuations: Because of the Sampi Meter’s unique dual-case design, the bearing surfaces of the meter element are internally and externally subjected to the same system pressure. Therefore, the meter element cannot be stretched or distorted , causing changes in seal area that would adversely affect accuracy.
Accuracy regardIess of temperature variation: Due to the common coefficients of expansion of the critical parts of the Sampi Meter element, products can be metered accurately from –40°C to +71°C.
Accuracy regardIess of viscosity: Due to the minimum area in shear and the smooth flowing characteristics of the Sampi Meter (no compression or vacuum exerted on the product), the standard Sampi design has accurately metered product from 150 SSU (25 centipoise) to 1,500,000 SSU (325,000 centipoise) without calibration change .
Linearity: Capable of ±0.125% or better over a 5:1 range from maximum nominal meter capacity. Capable of ±0.22% or better over a 10:1 range from maximum nominal meter capacity. Capable of ±0.5% or better over a 40:1 range from maximum nominal meter capacity.
Note: Accuracy obtainable when all variables remain constant. Reading/measurements must be equal to a minimum of one minute of flow at selected rate(s). All accuracy statements based on metering solvent, approximate viscosity 1 cPs. On higher viscosity products, the average deviation in accuracy will be even less.
Regulatory: Sampi Flow Meters meet OIML and other major international weights and measures accuracy requirements. The main certifications are: EEC, Australia, Russia, South Africa and many other countries on different continents.
Important: All Sampi Flow Meters are PED certified for fixed installation in EEC (BV certificate 0062).
Typical accuracy curve for meter calibrated “0” error at maximum flowrate on 32SSU Kerosene. Results shown for Fuel Oil and Gasoline based on no change in meter calibration (K factor)