how to work MIL contol valve posistioner ?
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Emergency Shutdown Systems/ Plant Shutdown System.
Dear Sir/Madam,im going to attend Hpcl written exams on feb 17th in instrumentation stream..can anyone send me the HPCL model papers and pattern of HPCL ....i ve not yet attended anything in HPCL...so i dont know how it comes...so just i need some model test papers and pattern ..pls help me friends...
what do u mean by compensation n pid tunning?in pid tunning what you tunned?is it possible 2 tune p i d
What is surge and how is it prevented, what is the purpose of bypass valve across AS valve.
NPN transistor, SCR, Zener diode, LED, Varactor diode, Vortex meter, RTD, Resistor, Crystal
How can i copy program (parameter) from mm440 (V.F.D.) by using BOP?
Hi my friends Is any one who can assist me in knowing the typical interview questions for system engineer at General Electric pty Ltd
In separator VFD frequently trip with OVER VOLTAGE Fault What is the reason?
We do have a problem in the company that is one PT connected to PlC which is mean 1 out of 1 in PLC system we do have the PAHH is 55 mbar and PALL 8 mbar with a timer of 15 sec for the PAHH the problem started when PAHH goes more than the set point which is 55 it reached up to 71 but due to timer doesn't trip . We force it and we checked everything nothing there . We replaced the transmitter problem still there the reading goes more than the 55 bar the range for transmitte is 0- 60 mbar . So we did loop check , aculaizing valve , wiring all are okay . What the possible causes for this ???
2 Answers National Petrochemical Company,
Consider a control valve action,the inlet air pressure is only 6 ksc but physically how it can be operate against 100 ksc line fluid pressure?
How to calibrate an pressure gauge with yantrika test bench?
i need some objective type questions in instrumentation
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