rajeshkolappan


{ City } seeb
< Country > india
* Profession * instrument engineer
User No # 99025
Total Questions Posted # 0
Total Answers Posted # 3

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Users Marked my Answers as Correct # 16
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Questions / { rajeshkolappan }
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Answers / { rajeshkolappan }

Question { 16515 }

why we use 24 vdc in instruments mostly?


Answer

always field(Process) instruments are communicated or
connected with PLC, DCS system.those PLC, DCS operating
current is 24 Vdc, so that instrument which are connected with
DCS, PLC system will be also using 24Vdc only.


Is This Answer Correct ?    5 Yes 6 No

Question { 3153 }

what is the use of conrol cable..?


Answer

Control cable are used for to control the equipment like
motor, VFD, MOV from the control room.

it's normally 3 to 4 core cables.


Is This Answer Correct ?    1 Yes 0 No


Question { 4854 }

If the Barrier Fails during online then What will be the
control valve position in field or Positioner action in the
field.


Answer

Control valve will turn its failure position either close or
open (FO/ FC)

Is This Answer Correct ?    10 Yes 0 No