FLOW METER PIPING REQUIREMENTS

1 ( 6 Engineering DataCatalog 23 Plant Engineering DataCatalog 23 Plant EngineeringData269 FLOW METER PIPING REQUIREMENTS Diameters of straight pipe required for various types of fl ow metersDiameter (D) = nominal Pipe SizeExample:13 Diameters of 6" pipe = 78"13 Diameters of 10" pipe = 130"Beta = (Bore )Bore is the smallest diameter of an orifi ce or nozzleUp = Upstream DiametersDown = Downstream DiametersFully Open Gate Valve(Unless Another Upstream Fitting Needs More)Fully Open Globe or Non-Return Valve (Unless Another Upstream Fitting Needs More)Partially Open Valve or RegulatorFLOW METERFLOW METERFLOW METERO rifi ce/NozzleBeta = = = = straight runs shown above are conservative minimums. Longer upstream straight pipe lengths provide better the indicated straight run is not available, Consult Factory.)

2 Detailed Factory analysis will require accurate fl uid data, fl ow data, and a sketch detailing the PIPING system 50 diameters upstream and 10 diameters downstream from the proposed METER straightening vanes can be used to reduce straight pipe length REQUIREMENTS , Consult Displacement and Coriolis Effect meters are not infl uenced by upstream and downstream fi Engineering DataCatalog 23 Plant EngineeringData268( 6 Engineering DataCatalog 23 Plant EngineeringData269 Diameter (D) = nominal Pipe SizeExample:13 Diameters of 6" pipe = 78"13 Diameters of 10" pipe = 130"Beta = (Bore )Bore is the smallest diameter of an orifi ce or nozzleUp = Upstream DiametersDown = Downstream DiametersTwo Elbows, > 10 Diameters, Fittings in Different PlanesTwo Elbows, < 10 Diameters, Fittings in Different PlanesReducer or Expander (Unless Another Upstream fi tting Needs More)Atmospheric Intake Orifi ce/NozzleBeta = = = (reducer), 2 (expander) Down222 Beta = (reducer), 4 (expander) Down224 VortexUp304525 Down555 ThermalUp154015 (reducer), 30 (expander) Down5105 (reducer), 10 (expander) TurbineUp101010 Down555 AnnubarUp9198 Down343 straight runs shown above are conservative minimums.)

3 Longer upstream straight pipe lengths provide better the indicated straight run is not available, Consult Factory. Detailed Factory analysis will require accurate fl uid data, fl ow data, and a sketch detailing the PIPING system 50 diameters upstream and 10 diameters downstream from the proposed METER straightening vanes can be used to reduce straight pipe length REQUIREMENTS , Consult Displacement and Coriolis Effect meters are not infl uenced by upstream and downstream fi METER PIPING REQUIREMENTS Diameters of straight pipe required for various types of fl ow meters ( 6 Engineering DataCatalog 23 Plant Engineering DataCatalog 23 Plant EngineeringData271 Diameter (D) = nominal Pipe SizeExample:13 Diameters of 6" pipe = 78"13 Diameters of 10" pipe = 130"Beta = (Bore )Bore is the smallest diameter of an orifi ce or nozzleUp = Upstream DiametersDown = Downstream DiametersOne Elbow, T, Y, or Tank Exit(Fittings in the Same Plane)Two Elbows(Fittings in the Same Plane)Long Radius Bends(Fittings in the Same Plane) FLOW METER (For Two Elbows >10D separation, use One Elbow Data) Orifi ce/NozzleBeta = = = = Down33 straight runs shown above are conservative minimums.)

4 Longer upstream straight pipe lengths provide better the indicated straight run is not available, Consult Factory. Detailed Factory analysis will require accurate fl uid data, fl ow data, and a sketch detailing the PIPING system 50 diameters upstream and 10 diameters downstream from the proposed METER straightening vanes can be used to reduce straight pipe length REQUIREMENTS , Consult Displacement and Coriolis Effect meters are not infl uenced by upstream and downstream fi METER PIPING REQUIREMENTS Diameters of straight pipe required for various types of fl ow meters