what is the deference bitween DCS and PLC SCADA HMI System for Power Process Industry.

1 Answers   UltraTech,

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A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

0 Answers  

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Convert a pressure, level, flow, or temperature process variable value into the appropriate pneumatic or electrical value given different types of instruments.

6 Answers   Jindal, MCL, Thermax,

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how to measure low temperature(<100 dec celsisus) with non condact sensor

2 Answers  

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What is the difference between precision and repeatability of any instrument. Why it is measured always in percentage

2 Answers  

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what are different types of cables used in instrumention how to calibrate a level transmitter online ( rosemount )

1 Answers  

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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 is meant by cold float of compressor shaft.

1 Answers   Sabic,

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Turbidity analyzer working principle ?

0 Answers   Tata Steel Limited,

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why we use -ve voltage in vibration monitoring system.generally we use 4 to 20 mA as output of instrument then why we use voltage in vibration

2 Answers  

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What is loop checking ?

10 Answers   Kharafi National, Petrofac, Samsung,

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what is actual difference between pressure Transducer & Pressure Transmitter.

5 Answers  

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