what is the procedure to isolate flow a transmitter and
flushing it?

Answer Posted / aftab ahmed mazari

For DP type flow transmitter, suppose hp side valve No. 1, LP side Valve No.2, and Equalizer Valve No.1,
Close HP.No.1 Valve
Open Equalizer Valve 3. and then close LP side Valve No. 2

Is This Answer Correct ?    37 Yes 10 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why even multiple power supplu r used in instrumentation system?

4163


what is use of communication wire in multipare cable(oil and gas field), why this communication wire not used in single pair cable?

1676


Explain an adaptive / self-tuning controller’s major draw card.

1863


What is instrumentation measurement?

630


how u calibrate pneumatic n motorized c/v?

1538






why we should maintain neutral earth voltage below 1V while calibration? why cant it be 1.2V or 2V

2003


which type of filter gives the constant phase characteristics?

1576


the whole paper was based on Transducers..questions like define repeatability, error,accuracy,precision..den there were many q. on the conversion of Pa to mmHg and other units.. also..der wer few Q. on some level sensors(with diagram)

1543


can anyone guide me how to get any of the previous year GAIL question papers? are they available? 0n 2nd august i have to take the written test.

1467


how to connect transmitter measuring sulfur process? 1-by using long impulse line or 2- by using coated short impulse line

1585


hiii.... can any one provide me previous years question paper of hindustan petroleum for instrumentation engineering???

1534


What is three element in drum level?

932


What is difference between differential pressure & delta pressure?

617


Dear Friends, we are planning to design Power distribution and Fiber optic in the same cabinet.Like Front side Fiber optic and Rear side Power distribution.Is it any possibility of problem occurs like interference etc? Your answer is highly appreciate.

1749


A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

880