Interview Questions Answers in Instrumentation

rajeshkolappan.m

{ City } muscat
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Questions / { rajeshkolappan.m }

Questions Answers Category Views Company eMail

what type of cables are used for f&G systems and detectors, what is the standard colour?

Punj Lloyd Ltd,

2 Instrumentation 13288

for commissioning the DPT and Flow Transmitter , what kind of necessary activities we have to check and do? specially that orifice flange valve[ isolation valve}

L&T,

1 Instrumentation 8725

a flow transmitter [range-0-400mbar] connected in process line. please explain me how to calibrate the flow transmitter , & how to do static error

L&T,

Instrumentation 2236

why is honed type flow orifice plate? what purpose it used? how to select this?

4 Instrumentation 17522

Answers / { rajeshkolappan.m }

Question { 6562 }

What is the different between ESD & PLC.

Answer

ESD- Emergency shutdown... it is for shutdown the total plant
during or in-case of any emergency like,high pressure accured
in process , instrument air failure, or any utility failure.

PLC- programmable logic controller.. by implementing logic or
program's , we can achieve the ESD by using PLC

so ESD is a kind of logic, PLC is a hardware.

Is This Answer Correct ?

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