Wedge Meters


The Wedge Meter is a differential pressure device suitable to measure the flow rate of dirty liquids in a closed conduit (slurry applications).

Flow Calculation:

Miller Engineering Handbook


As per Customer’s requirements
Main material Reference: ASTM-ASME Code

Type and Construction:

Standard Model ED-20/21: Diamond Shape-Manufactured by Square Bar 20×20 mm
Manufactured by bar stock
Manufactured by welded Plate

Applications: Oil & Gas / Petrochemical Industries
Dimensions: Nominal Diameter of Pipeline : over 2”
Beta Ratio: 0.4÷0.7
Reynolds Number Range: Over 200000


Accuracy (referred to the discharge coefficient) after calibration in accredited laboratory: +/- 0.25%


  • Accuracy (referred to the discharge coefficient) : 3÷3.5%
  • Rangeability: 1÷4.5
  • Repeatability: +/- 0.1%
  • Max PPL: 20÷40% of full scale differential pressure
  • Straight pipe requirements: 5 I.D.(upstream); 5 I.D.(downstream) in the worst conditions


  • Flow Meters can be manufactured according to Customer specifications
  • Flow Meter can be supplied complete with all relevant accessories (valves / manifold / condensing pot / transmitter / fitting /tubing)