Answer / vijay krishna

profi bus communication is not suitable for more distance
and will be get affected by emf.signal strength will also
low compared to ofc commn.only thing is less expensive.

without a positionar can a control valve operate? give the difference of operating with positionar and without positionar?

5 Answers   IOCL,

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Dear friends, I have a question: We work on a project which has some boilers to provide steam for desalination unit. The boiler area is safe and the only hazard source is the fuel lines of boilers. I want to know according to NFPA standard which type of instrument should be selected on the fuel line: Eex Type or Non-Eex type? Thanks in advance

2 Answers  

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How to change dcs card in online. (Dsc is maxdna)

0 Answers  

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How the sizing of the analog signal cable is calculate?

0 Answers   Reliance,

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IF PLC POWER FAILURE THEN WHAT HAPPEN?

2 Answers   IFFCO,

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Explain pH, Conductivity.

0 Answers   CCIE,

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What are difference between automatic and manual control system?

5 Answers  

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When LP SURGE happening in compressor

3 Answers   KNPC, KOC,

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How will u convert the mmh2o in mass or Volumetic flow rate in DP Flow Transmitter. Give me the Brief explain using the formula

1 Answers   Walchandnagar Industries,

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What for barriers are used in DCS & PLC systems?

2 Answers  

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in the boiler in the main steam line and its bypass line and the startup vent vales are only motorised valves why cant we use other types of valves such as pneumatic.

3 Answers  

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how is work pressure switch& level switch?what is the principle of this?

0 Answers   Binani,

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