Orifice Plate Coefficients: D_and_D_half#0.50
ISO 5167-2 orifice plate discharge coefficients (Cd) and flow measurement parameters per the Reader-Harris/Gallagher (1998) equation — corner taps, flange taps, and D-and-D/2 taps; beta ratio 0.10-0.75; Reynolds numbers 1e4-1e7
| tap beta | reynolds number | Cd (dimensionless) | approach velocity factor E (dimensionless) | beta ratio (dimensionless) | expansion factor Y (dimensionless) | permanent pressure loss pct (%) | pipe diameter in (inch) | tap type | uncertainty pct (%) |
|---|---|---|---|---|---|---|---|---|---|
| D_and_D_half#0.50 | 10,000 | 0.6131 | 1.0328 | 0.5 | 1 | 72 | 4 | D_and_D_half | 0.75 |
| D_and_D_half#0.50 | 100,000 | 0.6096 | 1.0328 | 0.5 | 1 | 72 | 4 | D_and_D_half | 0.75 |
| D_and_D_half#0.50 | 1,000,000 | 0.6085 | 1.0328 | 0.5 | 1 | 72 | 6 | D_and_D_half | 0.6 |
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