Answer / anurag,e&a,ispat ind. ltd.

loop is that by which we feedback some output signal to
input.there are two type of loops.
1.closed loop
2.open loop

Answer / ulaganathan

a loop may be defined as connection of elements
to the circuit making use of feedback.
It may be of open or closed type

Answer / ramanathan

A loop is which has a feed back of output&where the error
deduction has been done.eg. in a closed loop there will be
sensing of value & controller will do the job.

Answer / eid elatawy

Loop can be process loop or instrument loop
for instrument loop is the signal from/to Controller(DCS or PLC or....etc) and this signal started from the instrument(valve or transmitter or...)to junction box to DCS through multi core cable.

in the pipe line if the control valve fails to respond to controller action,by what means we can stop the flow in the pipe line ?

9 Answers  

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when a magnet is heated?

0 Answers  

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What is meant by GAP VOLTAGE, in vibration measurement. Normally how much GAP VOLTAGE is set and state the reason.

3 Answers   ADMA OPCO,

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Tell me about PID Tuning and what is PID.

4 Answers  

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can you give some devices that measure directly the mass flow rate.

1 Answers   Takreer,

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Shall we get the reading on level transmitter only by termination,without commissioning?

1 Answers  

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What is the role of integral in PID controller

3 Answers  

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Define cryogenic?

0 Answers  

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which type signal in & out in dcs

4 Answers  

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what is hot loop check and cold loop check.

3 Answers   Bapco Bahrain Petroleum Company,

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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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Advantages of servers over normal desktop in PLC SCADA system

1 Answers   InfoMedia,

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