in my plant 100% feedwater control v/v is air to close but due to instrument air fail,the valve opens but instead of drum level high its get tripped in low low drum level.the urv of level tx is 0 and lrv is -800.pls tell me the reason. for such behaviour.

1 Answers   Sirpur Paper Mill,

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what barrier is used in process industry.

3 Answers   ADMA OPCO, Process Industries,

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i want to Measure the Difference pressure of Packed distillation Column of height 3 mtr. h.p. side connected to bottom & L.P. side connected to the top , so tell me what will be THE URV & LRV of that D.P. transmitter?

5 Answers  

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WHAT IS DOPPLER EFFECT? WHERE IT IS APPLIED?

1 Answers  

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applications of plc in printing and packaging?

0 Answers  

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What skill/s does the Instrument Technician has?

6 Answers  

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Waht is surge in compressors and how to control it?

1 Answers   DEWA,

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What is scan time of PLC?

2 Answers   Gujarat Borosil,

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i want interview questions about PROCESS CONTROL INSTRUMENTATION , SENSORS AND TRANSDUCERS IF ANY BADY KNOW ABOUT THAT PLEASE SEND TO MY MAIL karumudi1003@gmail.com

8 Answers   Honeywell, Reliance,

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Sir i am preparing for PSU exam for ONGC but i am not able to get the appropriate syllabus and previous year question papers. Kindly send me the same, that will be a great help from ur side. OR if anyone can plz send me the papers and syllabus please.

11 Answers   Bhel, GAIL, IOCL, ISRO, NTPC, ONGC,

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what are the possible reasons if a control valve fails to open/close?

1 Answers   DEWA,

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where do you give the 4-20 ma i/p in a MIL control valve?

3 Answers   Siemens,

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