Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / r.murugan
IF ITS PNEUMATIC CONTROL VALVE FIRST WE HAVE TO CHECK
INSTRUMENT AIR PRESSURE THEN WE HAVE TO REGULATE THE
INSTRUMENT AIR PRESSURE REGULATOR TO I/P COVERTER AND
PNEUMATIC POSITIONER
BEFORE STROKING THE VALVE WE HAVE TO CHECK VALVE AT NEUTRAL
POSITION IF NEUTRAL POSITION THEN ONLY CAN MOVE THE THE
VALVE
IF AIR TO OPEN VALVE WHEN COMMAND 4ma VALVE POSITION SHOULD
BE CLOSE (DIRECT OPERATION) LOCAL WE HAVE TO MECHANICAL
SCALE CLOSE INDICATION
THEN INCREASE THE CURRENT 4.5ma TO 5ma to check the start
of opening the control valve
then gradually can increase and decrese the current and
corrospondingly check the stroke momemnt based on command
we have to check the feedback
| Is This Answer Correct ? | 16 Yes | 7 No |
Post New Answer View All Answers
What is motion balance principle?
How digital input and digital output 's are working in dcs
In turbine what does term CDP, NH, HSSOC means.
if in a level tx height is given, how u calculate the ranges of the tx?
the output of the common trasmitter protocol in qatar gas are the following
what is compensation? temprature & pressure
Hi i am aneesh, done btech in applied electronics & instrumentatiin. And then i took mba in finance & marketing.After that i got placement in finance co and worked there for 3.5 yrs.Now i wanted to come back to engineering job.But without engg experience, i may not able to find an opening.i have done a course related to flow meters and ite calibrations. Kindly suggest where should i try to get a job?
How does your previous experience relate to the job you are applying for ?
What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.
How to Calibrate Level Troll in field
How will you calibrate PID controller? explain with example.
how 3 out of 2 Logic/interlocks works? give brief explanation with help of diagram.
Meaning of the following a. IOP- Manimum; b. IOP- Maximu,;
please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com
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...
