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Square root in TX or controller

Hi 

Can someone explain the difference (if there is in the functionality of the loop or anything else) between configuring the DP square root in the transmitter or in the controller? I saw a flowmeter in the field displaying mA instead of flow, does that mean the square root is not configured in the transmitter? Appreciate some explanation on this point please. 

Thank you  

yacine
  • Emily Saopraseuth
    Hi Yassin –
     
    There is no functionality difference between performing the square root in the transmitter or the controller.  It comes down to user preference. It would be advisable to choose one or the other as a plantwide standard to avoid square root being done in both places.
     
    If the square root is done in the transmitter, Rosemount pressure transmitters have a scaled variable function that can output flow by create a relationship/conversion between the pressure units and user-defined flow units.  More information can be found the Rosemount 3051S Reference Manual in section 2.9.7 (https://www.emerson.com/documents/automation/manual-rosemount-3051s-series-pressure-transmitter-hart-protocol-en-75976.pdf).
     
    Thanks!
    Emily
     
    Emily Saopraseuth | T +1 952 204 6375 | M +1 952 232 8454 | 
     

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