Why we use 3-15 psi air for control valve input?

2 Answers  

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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

0 Answers   IOCL, Lakshmi Machine Works,

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what are the documents(Construction point of view for a process plant) submitted by contactor initially entering in to new site for client?

0 Answers   NTPC, PSU,

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What is the three element? And how it work?

1 Answers  

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What is the difference between ROM & RAM .

1 Answers   Sabic, SPIC,

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how many types of elements are there?

1 Answers  

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how to calibrate corollaries (Mass flow meter)?

0 Answers   Honeywell,

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What is shielding effect?

0 Answers   Process Control Technologies,

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What is the IEC Standard for PLC I/O Terminal wiring Procedure?

1 Answers  

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what is control valve and how is work

5 Answers   Descon,

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what is flow and flowrate? definate and diffrentiate it? pls post a valid ans thanks in advance

2 Answers   Qatar Gas,

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what's the reson that,Load is not same on VFD I/P and O/P Side.whenever DOL condition load is same I/P and O/P side.

2 Answers  

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