Answer Posted / manan2347

Because of the scan time.
the scan time of DCS is generally of 100ms to 1 sec. where scan time for PLC ia 10ms.

we want quick action in case of any emergency for that we are using PLC in ESD system.

why we r opening HOT BYPASS valve during startup of a compressor?

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model question paper of instrumentation for Jindal GET 2010.plz reply sudhanshukumar08@yahoo.com

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1.can you use SCADA instead of DCS,DCS instead SCADA 2.Difference between DCS and PLC,can their role be reversed i.e. role interchange 3.Difference between RTU and PLC

2526

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How vortex sensor used for steam flow measurment can be checked on line i.e without taking out from process line.

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what are the selections available in configuring a burnout protection of a controller? thanks

1914

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What is rang ability?

2232

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Operational amplifiers

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why micro controller 8051/52's clock frequency is internally divide by 12 ?? and why it is further divide by 32 in UART serial communication ??

7456

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What is stripper & spilitter ? Diffrence in this.?

2436

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i am preparing for BARC ,so plz mail me how to prepare for BARC. ALSO IF POSIBLE SOME RELATED QUESTIONS. MY MAIL ID IS khushi_4uall2003@yahoo.co.in

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plz send me general of ongc

1888

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line up procedure for dp type flow transmitter?

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why I need valve guard and whats different between guard and positioner ??

1329

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if in a level tx height is given, how u calculate the ranges of the tx?

7581

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A flange is used for instrument connection for a system with a design temperature of 316C (600F) and a design pressure of 1000 kPa (145 psi). What is the class rating of the flange to be used for this application? Explain your answer

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