Theinstrument Society of America has publications for
sale over the net that covers this and many other
aspects of instrument/piping interface design.
Try the book by Foxboro, author Spink that is a classic. Foxboro software, probably available as a download covers thios aspect for various types of measuring element.
You have not psecified the type of element or the fluid so it is sdifficult to offer other advice.
It is also important to understand the proximity of
bends, tees, reducers and other fittings to the
element.
If one cannot accomodate the necessary straight
lengths then you may need to consider flow
straightening elements. This is covered in the ISA
installation guide for flow elements.
For other than a simple orifice plate the element manufacturer should provide a recommendation
Can anybody give me the basic criteria behind deciding the upstream and downstream dimensions between Flow Element and connecting Fitting / accessories in piping?
regards,
rakesh
</tt>
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