Pitot Tube & DP Meter Selection for Small Scale Processes

[davidgrant23]

Hi there,

I have been in contact with a manufacturer as I require both a pitot tube and a differential pressure transmitter for my process. Both will be used in a small scale process (around 10 l/min).

I want to ask if it is possible that a flowrate can be too small to generate a large enough differential pressure for some DP meters/transmitters. Is there such a thing as a minimum flowrate for pitot tubes and DP meters, or is there only a maximum allowable flowrate?


Thanks,
David

 

[jedishrfu]

Here's one manual that talks about minimum rates:

http://www.unitedsensorcorp.com/pitot-properties.html

and here's Omega's guide that describes how to select pitot tubes:

http://www.omega.com/Green/pdf/PITOT_SELECTION_REF.pdf

and here's another more descriptive manual:

http://www05.abb.com/global/scot/scot203.nsf/veritydisplay/515d2522afafd358c12575a9002bd35b/$file/pb_torbar_en_%20issue%201.pdf