I saw one P&ID 6" control valve has been connected with 8" process line, and 2" valve also connected in parallel with 6" valve. why the 2" valve connected in parallel, Is there any technical reason. please clarify. With Regards-Kittu
GNFC,
5 8411i am going to attend ongc exam this coming june for Graduate Engineer Trainee post if anybody knows the question pattern or have experience plz share it with me
ONGC,
3 9976what should be minimum length and size of impulse line for steam flow orifice and feed water orifice? asked by sanjay parihar
1 6033what happens if we are having very very high cavity and flashing in a control valve..??? is it stops working...immediately... or eroded...slowly
2 4750what is the difference between(Flame proof/Explosion proof)& Fire proof instruments.Both are same or different & if different in which way because the transmitter which have approved ATEX flame proof enclouser but it use PTPE O ring & PTFE Head Gasket,so its (fire safe/fire proof)????????
4 20665can anyone can let me know in Eurotron Micro cal 2+ calibrator in milli amps source mode we are not able to get 20 milli amps output it only produces 1.52 milli amps out, but display shows increase in milli amps , and err6 displays, let me know how to remove the err 6.
1749If mVolts can drop by resistance of wire as compare to mA, then how thermocouple mV reaches in CCR as accurate value?
7 8102Post New Instrumentation Questions
Draw a wheatstone bridge circuit showing supply, meter and 3 wire RTD connection
what is sil (safety integrity level
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what is compensation? temprature & pressure
What is zener diode? What is voltage regulator?
I want to know the questions asked in ONGC interview(after being selected in the written exam) for Instrumentation branch.Kindly help.
draw the block diagram of a level transmitter ?
can we copy the software from a transmitter using hht(hart 275) ?
while am calibrating Drager polytron 2IR flame gas detector occured non zero status.how can i get zero status?
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
how will you check torque value during Factory acceptance Test for control valve/ESD ON/OFF VALE how will you confirm this torque value is being correct, Which document will you be refer.
what is the difference between Cv and air consumption? why the customer needs Air consumption details?
principle of automatic votage regulator
give some question relative instrument fitter?
I am using 971 Enraf radar level transmitter for LPG tanks ,the tank side indicator gives the error code 999999999FL can any body give me any diagnostic for this issue?
