correction factor

[Momoeng]

can anybody explain me simply how correction factor of a flow transmeter FT works
i mean .. how it reads a specified flow on a pressure and temperature ... and in another place with different pressure and temperature it reads the same flow

thx

 

[qdzung]

Are you talking about P+T compensation for flow measurement?
The selection of equation is depent on which Flow instrument type.
If you are using dp flow, this link may help you: ->

http://www.eng-tips.com/viewthread.cfm?qid=320614

For other flow intrument type, you should check the manual from vendor.

Following is examination for I&C engineer from my friends:

 

[georgeverghese]

To make things more complicated, there are correction factors for mol wt and Z also (in gas service).