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

Why flow/pressure transmitter before control valve?

0 Answers   UPL,

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3 Answers  

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2 Answers  

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In s7-200 we use HMI TD-200C , what that C stands for........ plz reply

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Please explain about FAT? What is the difference between FAT and SAT?

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What does a hookup diagram look like? can you give sample drawing. thanks.

1 Answers  

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We are used CENTUM CS3000 of YOKOGAWA. please tell me how to simulate wihtout FCS and vnet.

1 Answers  

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what different types of problems do occur while doing instrumentation commisioning and how to solve them? please explain in detail

0 Answers   Process Control Technologies,

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Who to difference between analog in & analog out in dcs?

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What is the working principal of Mass flow transmitter?

1 Answers  

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How to Calibrate Vortex Flow transmitter in field

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field bus transmitter calibration procedure tell me

0 Answers   BAP,

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