Measurement and calculation the position of control valve

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Calculation the position of control valve

A loop controller gives the loop signal of 7.8 mA of the control valve. How much valve will be open or position of Control valve?
Calculation the position of control valve
Because this relation is linear so we will use standard 4-20 mA formula.
              Y= (16/100)X+4
Y= output current signal
X= Process variable in percentage
 Solution:
             7.8= (16/100) X+4
             3.8= 0.16 X
              X= 23.75 %
Hence if we are receiving 7.8 mA current it means valve is 23.75 % open.
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2 Responses

  1. September 8, 2018

    […] Measurement and calculation the position of control valve […]

  2. October 14, 2018

    […] Measurement and calculation the position of control valve […]

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