The Orifice Plate is a differential pressure device suitable to measure the flow rate in a closed conduit. (It is an affordable device for general applications).
| Specifications | Details |
| Applications : | Oil & Gas / Petrochemical Industries / Power Stations |
| Type of Elements : | Square Edge Orifice / Quadrant Orifice / Conical Entrance Orifice / Segmental orifice |
| Material : | As per Customer's requirements / Main material Reference: ASTM-ASME Code |
| Type of Pressure Taps and Relevant Calculation : | Flange Taps, Corner Taps, Radius Taps, Pipe Taps |
| Type of Construction : | 1. Flange Taps: with pressure taps on flanges or on carrier ring 2. Corner Taps: with pressure taps on flanges, or on annular chambers or on a monolithic plate 3. Radius / Pipe Taps: pressure taps shall be welded on pipe (in this case the assembly shall be supplied complete with the relevant spool pipe) |
| Flow Calculation : | Main Reference code: ISO 5167/ASME MFC-3M; ASME PTC 19.5 |
| Type of Plate Connections : | All / Main Connections: RF-RJ |
| Type of Flanges : | WN-SW-LJ-THD-SO according to International Standards (ANSI/ASME/UNI/DIN/API) |
| Other Options : | 1. Single Chamber Orifice Plate Assembly: is a special kind of construction with a system that allows an easy removal of the plate from the assembly 2. Dual Chamber Orifice Plate Assembly: is a special kind of construction with a system that allows an easy removal of the plate from the assembly under pressure. |
STANDARD LIMITS AND APPLICATION FIELDS
| Specifications | Details |
| Dimensions : | All taps configurations: 2 Inch to 40 Inch |
| Beta Ratio : | All taps configurations: 0.1 to 0.75 |
| Reynolds Number Range : | For beta ratio up to 0.56: greater than 5000 (for lower Reynolds numbers, special orifice types are required) |
PERFORMANCES
| Specifications | Details |
| Accuracy (referred to the discharge coefficient): | As per ISO Code |
| Rangeability : | 1 to 3 |
| Repeatability : | +/- 0.1% |
| Max PPL : | 50 to 70% of full scale differential pressure |
| Straight Lengths Requirements : | As per ISO 5167 |
TYPICAL SUPPLY CONFIGURATIONS
| Orifice Plate only |
| Orifice Plate Assembly |
| Meter Run Assembly (up to 2 Inch) |
| Complete Upstream /Downstream Spool Orifice Assembly (with Flow Conditioner, if required) for 2 Inch and above : |
CALIBRATION
Accuracy (referred to the discharge coefficient) after calibration in an accredited laboratory +/- 0.5% of F.S.
NOTE
1. Manufactured according to client specifications
2. Flow Meter can be supplied complete with all relevant accessories (valves / manifold/condensing pot /transmitter/ fitting / tubing.