In control valve proximity inductive sensor is taken as digital feedback for full open and full close.Normally its volts 24v when the sensor acts the feed back voltage 14v so that our relay not indicating in plc panel . kindly give the solution.

0 Answers  

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Advantages of servers over normal desktop in PLC SCADA system

1 Answers   InfoMedia,

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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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Which wiring connection is preferred in motor for industrial use?

2 Answers  

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what is the deferance between LCN and UCN.

1 Answers  

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what is the standard of determining opening/closing time of Motor Operated Valve?

1 Answers  

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I have completed B.E. Instrumentation & control in 2009. i have 3 year industrial job experience in chemical plant.now, I want to join M.E. in external. so, Plese say easiet way and good institute name.

0 Answers  

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Why boiler chimney area  oxyden sensor fixing? 

0 Answers   NTPC,

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What is offset in a control system.

2 Answers   Sabic,

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What is DCS?

4 Answers   GAIL, Sabic, Trident, Yokogawa,

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In your own words, would you expect an ultrasonic level device to work better in a pressure vessel with a high pressure or a strong vacuum, and why?

1 Answers  

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Specify ideal accuracy of flow element like orifice plate, Ventury, Annubar. Ultrasonic flow meter etc.

0 Answers  

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