Answer Posted / sohail malik sngpl pakistan
there is a very important difference b/w PLC and
DCS ....Basically in a process controll system plc is
sequential bases however DCS on loop control based.
explanation if in a PLC controlled system any Intrruption
or error signal generatd the whole system which is operated
bye this PLC effected and should be stopped and give Alarm
in fact in DCS system if there is any problem generated the
system give indication such problem but switch over to the
next loop or task which may not effected.
| Is This Answer Correct ? | 11 Yes | 7 No |
Post New Answer View All Answers
Boolean algebra
How to Calibrate Temperature Switch in field
May I have a brief note above the voltage barriers? Whats is the purpose? Please mail me if you've operational details, mail id: rajkumar.diice@gmail.com
please tell me what is a light up procedure of Cfbc boiler and what it's axuillaries of cfbc boiler?
i want to know the interview format fot gail, instrumentation. pls answer me in habib.sami1003@gmail.com
can any one explain in which term we are flow flow is it volumetric r is it mass? and y
What is frequency factor in massflow meter? When using frequency output?
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
model question paper of instrumentation for Jindal GET 2010.plz reply sudhanshukumar08@yahoo.com
What is Alpha & Beta fctors related to Orifice Plate & its relation with flow?
Which products are available in the Mass Systemswitch and System Manager AC range?
Calibration procedure for Electro magnetic Flow meter
Specify for Cables - Flame Retardant and Fire Resistant?
what is wave length were using ?
pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.