Draw a simple circuit for a well head control panel used to protect the well against fire, leak, blockage, ESD, & controls the operation of one downhole & one surface safety valve. Explain the operation and controls

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why 1 to 5 vdc is used for output measurment

4 Answers  

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Transmitter reading is zero but in DCS showing one Bar what is the reason ?

3 Answers  

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when the operation engineer told you that he gives the control valve order to open but there is no response ! what will you do ? and if you found that there is astuck , what will you do ? (note : it is apanumatic valve )

5 Answers  

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Explain the difference between differial pressure & delta pressure?

1 Answers  

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Yokogawa mass flow meter shows negative reading...what r the main causes for this problem?...

3 Answers   IOCL,

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What is Positive Calibration and Negative Calibration?

0 Answers   SA Kent,

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what is Dry Leg calibration and where is it used

1 Answers   Petrofac,

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How much Resistance Show by RTD(PT100) when it is installed in process(Consider Process Fluid temp 29 Deg C)?

5 Answers  

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Why 4-20mA SIGNAL IS PREFERRED OVEA A 0-10v signal?

5 Answers  

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WHAT IS SMART SENSOR AND DIFFERENT B/W SMART SENSOR AND SENSOR??? PLS GIVE ME ANSWER AS SOON AS POSSIBLE.....

1 Answers  

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If i have 4 Allen Bradely make RS logix 5000 PLC and for viewing that we are using 4 RS view SCADA for 4 different packages. Now, I will want to view two packages on only one SCADA. Then how i will do it?

0 Answers   Essar, Reliance,

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