Jump to content

Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog


Process Data Sheet For Flow Element.

1 reply to this topic
Share this topic:
| More

#1 shantanu.ghag


    Brand New Member

  • Members
  • 1 posts

Posted 13 January 2019 - 04:07 AM

Dear all, 


Few query related PDS of flow elements, 


1. Can anyone suggest allowable DP criteria for flow element-orifice?

    As a general criteria, i think it is below 0.2 bar, but in some data sheet i have seen its varying w.r.t.                      min/normal/max flow also.

2. Also, how min/max flow in data sheet is decided over normal flow rate? is it specific % of normal flow rate?

3. How can we decide maximum meter range?




#2 Technical Bard

Technical Bard

    Gold Member

  • ChE Plus Subscriber
  • 382 posts

Posted 13 January 2019 - 11:15 AM

An orifice plate will generally be specified for 100, 200 or 400 inH2O pressure drop measured by the taps, but some of that is recovered.  Then you need to consider the pressure drop of the meter run (if you are installing a proper meter run of straight pipe).  A typical allowable pressure drop across an orifice meter would be 1-2 psi.  Other meter types are generally more (except ultrasonics).

Similar Topics