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Wedge Meter Tap Locations

Wedge Meter Tap Locations

Wedge Meter Tap Locations

(OP)
Hi all,

I just started with a company that makes differential pressure flowmeters three months ago.  I was hired because the company being consolidated back to corporate headquarters but none of the engineers were relocating.  I forced as much information into my head as possible while the other engineers were still with the company.  However, I am stuck on designing a wedge meter for a customer.  I have as a reference, Flow Measurement Engineering Handbook by R.W. Miller.  Looking at the section on segmental orifices is not giving me the information I need (at least it does not match units we have already designed).  I need to know what the tap spacing is for this meter.  Surely there must be some guidelines out there.  I am pretty sure ASME does not specify the guidelines, but there must be a rule of thumb out there.  I know my beta ratio, pipe ID and wall thickness.  I should be able to come up with hi/low tap spacings and an over all length.  

If anyone out there has a reference that would help me, it would be greatly appreciated!

Thanks in advance!

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