Answer Posted / senthil

CALIBRATION OF A DP TRANSMITTER VARIES DEPENDING ON ITS
RANGE ( POSITIVE OR -IVE TO +VE)
FOR EXAMPLE:IF THE RANGE IS 0 TO 10BAR IS THE RANGE-
U HAVE A FIVE WAY MANIFOLD ON THE
TRANSMITTER.THE POSITION SHOULD BE
- VENT VALVE TO BE CLOSED
-LP ISOLATION VALVE IS OPENED AND VENT TO ATM
- CONNECT THE CALIBRATOR(DRUCK OR HYDRAULIC PUMP) ON THE HP
ISOLATION.
SINCE OUR RANGE IS OF POSITIVE VALUE.WE APPLY CORRESPONDING
PRESSURE ON THE HP SIDE..0,2.5,5.0,7.5,10

FINALLY DONT FORGET TO CONFIGURE IT AS SQUARE ROOT USING
HART COMMUNICATOR IF WE USE IT FOR A FLOW MEASUREMENT..

Can any one send me IOCL instrumentation question papers.. i dont know the pattern of the questions and what to prepare can any one help me on this .. my email id is anwarnishil@gmail.com

2342

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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.

2263

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What is the Working principle of Dozing valve?

2292

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can any send me a forbes marshall dtron 316 manual

2049

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any body who gone thru recent iocl interview.INSTRUMENTATION questions. I need.

2576

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hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.

2266

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any body please send me the old question papers of ongc test.

2178

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plz you help about Que paper of mahagenco previous your,any model paper relad to it{maharastra power genration}

2408

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send me model hpcl questions pleas..........my mail id mohideen.dharvesh@gmail.com

2335

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Question on maha cement

810

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Can any body help to get Rsemulator 5000 free from internet if possible then give me any link or any help .

2584

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Can any one tell me what type of question asked for instrumentation and control interview panel??? pls mail ramashankar.goel@gmail.com

982

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pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.

3227

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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......

2160

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give me all the details about the interview and which type of question being asked

2301

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