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

pls tell me whethere flame proof HMI's are available or every HMI is manufactured by considering flame proof standard.

3 Answers  

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Draw a group of instruments interlocked to a Pump & Motor?

0 Answers  

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HOW DPT WORKS?

6 Answers   Essar,

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How to calculate mmwc values into tonnes?

0 Answers  

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which instrument is used to study the structure of phloem and xylem tissue?

1 Answers  

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why do we use 4-20 ma current why cant o-20ma

6 Answers   Southwest Cheese,

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where can i find a flameproof hmi unit?

1 Answers  

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Hello Friends do you know this answer of this Question? Which color you would use when there is Somthing not correct or need to change In P&ID? i mean color that use for highlight that need to update in P&ID. Yellow Highlighter ? Red color ? Blue Color ? Appreciate for your answer. Thanks Blue Color

2 Answers  

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what is the principle of ultrasonic flowmwter and radar type flowmeter?

4 Answers  

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what is ILD

1 Answers  

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What is the potential contact / output??

1 Answers   Vasava Engineering Private Limited,

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why 4 to 20 ma ,why not 0 to 20 or 3 to 15 or anything

19 Answers   Honeywell, TCS, TN,

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