1. How many output signals do wew have in process control? 2. Could you write down the names of the pre-commissioning and commissioning stage test instruments and explain them (more than 5 items)? 3. What is the first step to commission a transmitter on service? 4. What is RTD? 5. Find the output value in MA of a temperature transmitter (RTD Type) at 120degree celius? 6. What is the O/P signal of a pneumatic transmitter? 7. What is the O/P signal of an elctronic transmitter? 8. What is the close loop and open loon?

4 Answers  

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3 Answers   Emerson, Jindal, JKPM,

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0 Answers   Petrofac,

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0 Answers   CCIE,

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In control valve there are two type of valve seat we can use metal to metal seat & soft seat.On this valve seat i have following doubt. 1)I have never seen practically the internal assembly of valve so my doubt is that basically weather the seat is soft seat or metal its basic MOC is same as valve body(SS or CS) only in soft seat we are using PTFE ring & place on valve seat & in metal this PTFE ring is not threr am i correct??????? 2)what are the common general rule for using metal to metal seat & soft seat,means its depend on process parameter like liquid,gas, steam & on valve leakage class.

1 Answers  

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what are the pinciples & units of flow, level, temperature, pressure, quality.

1 Answers  

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How can I make calculation for Install level transmitter (DP) for open tank and cloes tank?

1 Answers   Petrofac,

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what is the difference between hub and switch?

6 Answers  

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what is virtual instrumentation

0 Answers  

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How to Calibrate Interface Level Troll in field

0 Answers  

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Can anyone send most commonly asked interview question in Oil & Gas industry

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GWR radar transmitter working principle?

2 Answers   Tata Steel Limited,

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