bruce.r.raymond@fluor.com wrote:
> Amit - I got confused by your reply - please refer to API RP 550 -
> "Straight Run Requirements for Meter Runs" upstream distances are
> determined by: 1) d/D ratio ( normally 0.7) & 2) piping upstream
> configuration, therefore at a "beta (d/D) ratio of 0.7 your minimum
> upstream straight runs can range from 14 to 39 diameters , downstream
> remains constant at 5 diameters. Don't forget that ALL interior welds at
> orifice flanges must be ground smooth. For other types of flow sensing
> devices (annubar, positive displacement, venturi, magnetic, coriolis,
> etc.) individual piping requirements exist & must me verified
I've always liked elbow-mounted Annubars for space-saving in large-bore piping, but they can't be used for all fluids.
Paul Received on Sun Aug 12 07:47:00 2007
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