Answer / s. kanniyappan

The Main problem occurs in DCS/PLC hardware are

1) Channel failure
2) I/O cord failure

Answer / rajendra shaha

1)channel failure
2)i/o card fail
3)AI AO channel weak
$)processor card problem
5)bus coupler card problem
6)bulk power supply(BPS)fail
7)DSSR FAIL
8)COMMUNICATION FAIL

What is the three element? And how it work?

1 Answers  

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in which application we use bigger size actuator

5 Answers  

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diff bw range and span?

3 Answers  

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when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

2 Answers  

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what is wave length were using ?

0 Answers  

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role of electrical engineer in the instrumentation industry

1 Answers  

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define feed forward control loop with example and drawing?

0 Answers   Honeywell,

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I saw one P&ID 6" control valve has been connected with 8" process line, and 2" valve also connected in parallel with 6" valve. why the 2" valve connected in parallel, Is there any technical reason. please clarify. With Regards-Kittu

5 Answers   GNFC,

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1)how can calibrate temperature transmitter? 2)how can calibrate flow transmitter? 3)how can calibrate level transmitter?

3 Answers   ccic, Emerson, JK Pharma, NIGC, Rockwell, UltraTech,

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WHY WE NOT USE 2-20mA,1-20mA,3-20mA or 10-50mA SIGNAL? INSTEAD OF 4-20mA.

6 Answers   Hindustan Unilever Limited, Yashmun Engineers,

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Why rtd  out put is ohm how create the ohm 

1 Answers   Samsung,

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What is the difference between pneumatic and electro pnematic positioner?

3 Answers   TCS,

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