Answer / rajesh.kon

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

Answer / nikunj dungarshi furia

it will return to its position at no signal condition i.e.
either normally closed (air to open / fail closed) or
normally open (air to close / fail open)

Answer / james

Based on the process
1st If barrier fails before escalating to a incident - The answer is fail safe c/v CLOSE
2nd when barrier fails - fail safe action done - Then the fail safe action will be - c/v OPEN to atm / flair

When a field input to plc is coming from 400 to 600 meters and the input is in 24 V DC? So signal cable of which cross section i should select for proper signal to plc?

5 Answers   Exxon Mobil,

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What is the difference between HMI and SCADA?

2 Answers  

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what is maximum vaccume?

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How many types of sensor

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A differential transmitter is calibrated to measure the flow of lquied, explain what wil happen if the fluid is not pure but contains some bubble?

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What is DCS?

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in which mode of the zener diode act when load voltage is approximately constant

1 Answers  

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transmitter in 3 connection +,-,And test mode so how Use To Test Mode

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In turbine what does term CDP, NH, HSSOC means.

0 Answers   Takreer,

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