we have a s-5 simense plc having op7 .recently on op7 showing error 1.plc not present 2. DB error frequently. can u have any solution . please send me.

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How to calibrate the control valve.

1 Answers  

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Basically iam Instruemntation Engineer, but Iam interested in Instruments design engineering, so plz guide, is there any course, training or Softwres to become Instrument design engineer??.

0 Answers   Honeywell, Tata Steel Limited,

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Draw block digram for well head from well to shipping pump?

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how do i tune dearator pr control valve using PID. we set the set point is 0.6kg/cm2 now i want 0.5 to 0.7kg/cm2 limits so what should i give p,i,d values. then pls explain how do set pid values for control valve tuning?

0 Answers   SEWA, Sharjah Electricity and Water Authority SEWA,

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Lube oil pressure transmitter local it's showing 9.8 kg/cm2 but dcs side it's showing 9.26 like that what is the reason?

3 Answers   Edac,

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what is the path to communicate from profi to ofc.what is the means of communication.what is multi cire cable in ofc.

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For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?

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THE OUTPUT OF A CURRRENT TRANSMITTER OR A PNEUMATIC TRANSMITTER HAS A LIVE ZERO?EXPLAIN

2 Answers  

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whatis diference between zero pressure and obsolute pressure

1 Answers   ABB,

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whyvibration probe (bently nevada ) is set -10 volt for zero reference?

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What is the role of P(Protional), I(Integral) and D (Derivative) in PID Controller?

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