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1 2488in split range control system we are using two control valves,but we have only one positioner and one feed back link.so how we use this one feed back link for two control valves?
2 8401in split range control valve,two valve should be in two different line and that should have some distance,and we have only one positioner feed back link.so how we connect one feed back in two control valves?if you have picture please forward me.my email id kb.syamkumar@gmail.com
2 7993in the boiler in the main steam line and its bypass line and the startup vent vales are only motorised valves why cant we use other types of valves such as pneumatic.
3 10425without a positionar can a control valve operate? give the difference of operating with positionar and without positionar?
IOCL,
5 12331Post New Instrumentation Questions
please tell no. & add. of consultancy who recruit me in power plant as instrumen engg. present i m working in power plant as ass.t instrument engg. thanku mahesh 09226562826
can any send me a forbes marshall dtron 316 manual
any body who gone thru recent iocl interview.INSTRUMENTATION questions. I need.
send me last 5 years questions asked in rrb chennai, for section engineer
any body please send me the old question papers of ongc test.
use of split range ? where it is used ? in which control loop it is used ?
What is the Working principle of Dozing valve?
please send data bank of quetions answers on analytical instrumentation.
hello friends, can you please send me the model paper or question paper to be prepared for hpcl examinations????????? You can mail me at rahim_here@yahoo.com waiting for your reply........... help me .. plz.....
hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.
Can any body help to get Rsemulator 5000 free from internet if possible then give me any link or any help .
i hav applied for the post of engg. in iocl so please require the past test papers fro instrumentation engg please please help me and send me the papers or tell me the pattern and type of ques asked in examination......
I am manjunath having exp in maintenance of chemical plants,know i want to do a design course INTOOLS,after doing design course can we get jobs in design field.sinve i dont have design exp..
A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.
pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.
