Answer Posted / sivakumar.s

with feed back is called closed loop 
without feed back is called open loop

Explain plc level and its type?

1409

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hi my name is rakesh patel i just complited my be in instrumentation & control now i am going to working as a validation engineer in a poject department so what is a scope in a future as a validation engginer ? what line is good for me can any bady give me complete solution please? your regard rakesh patel

2011

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line up procedure for dp type flow transmitter?

1948

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why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.

2789

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Square root calculation for dp flow transmitter?

1303

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Can anyone send most commonly asked interview question in Oil & Gas industry

2310

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NPN transistor, SCR, Zener diode, LED, Varactor diode, Vortex meter, RTD, Resistor, Crystal

2236

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why we are using magnet for calibration of gas detector?

2287

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When doing a liquid seal on a differential flow transmitter , most of the time the sealing liquid will be heavier then the process fluid. For wich application will the sealing liquid be lighter than the process fluid if transmitter is mounted below the process line.

1858

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Explain PID controller tuning & any one method used for it.

7881

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What is the use of control cable?

1203

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i want formula for flow control.am doing project in flow control using orifice . i know value of the flow level(Q) . upstream(p1) pressure, orifice diameter(Do) , pipe diameter(Di) and oil viscosity(Vi) how can i calculate downstream pressure

1957

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what is The specifications for oriface instalation

2197

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A length of steel pipe is used to carry sea water to a desalination plant. An adequate corrosion allowance must be specified and indicated in the piping specification, which affects the _________________________ of the pipe

2286

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What is the use of temperature compensation?

2068

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