Flowmeter typical metering runs.

[Weegie]

Does anybody have tables or a link to tables that show the recommended upstream/downstream straight run pipe diameters for each type of flowmeter ?
(I was referenced API 14.3 part 2 but, don't have it)

Many thanks.

 

[dcasto]

you'll need to buy them. There are condensed version available in the GPSA data book and some othe publications.

 

[Ashereng]

Vendors will have the recommend upstream/downstream diameters required.

Other considerations include flow conditioners, accuracy required (you can give up upstream/downstream if you can live with lower accuracty).

"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

 

[Weegie]

Thanks gents, for the info.

 

[dcasto]

The reason to use flow conditioners (or straightening vanes) is to shorten the tube lenght. The standards for flow conditioneers are performance based. If a vendor is going to supply a flow conditioneer, they are required by the standard to provide documentation that their produc performs per the standard (in terms of swirl and flow profile).

My motto on measurement is: There is no such thing as a custody transfer meter, just put in the correct meter, do not argue about accuracy, if you don't care about accuracy, just tap a 90 bend and read the DP and calibrate the reading to some other measurement in the system.