I am Mohamed from Algeria, I'm a senior Technician
qualified in instrumentation. I work in an international
petroleum and gas company (SONATRACH: Separation of
associated gas from crude oil. Production of condensate,
LPG and re-injection of dry gas) within the regulation &
Control instrumentation department.I am interested for
working in Qatar Petrochemical Company (QAPCO) in
Qatar.Now,I am seeking a position, which is an
opportunity for me to put my experience to good use and
actually participate in running on this company.
So, Can anyone help how to contact this company?
HOW TO DO PERFECT CALIBRATION OF DIFFERENTIAL PRESSURE
TRANSMITTER FOR CLOSE VESSEL TANK LEVEL PURPOSE ???? AND HOW
TO MAKE ZERO PRESSURE ??
Rosemount 2051 Pressure Transmitter with HART® Revision 5 and
7 Selectable Protocol BIENG USED !!
HOW TO CALIBRATE FIELD SIDE DPT WITH THE HELP OF SPAN & ZERO
PUSH BUTTONS ??
HELLO FRENDS ,, I M IN THE MIDST OF TROUBLE .. JUST LITTLE HELP ME...
SUPPOSE ,, I HAVE A CLOSE VESSELE TANK ( HEXANE MEDIA ) ,,
I M USING ROSEMOUNT 2051 DPT FOR LEVEL APPLICATION ..
ITS CALIBRATE RANGE IS.. . 0 TO 950 MMH20 ..I DID CALIBRATED DPT WITHOUT
REMOVING IMPULSE LINE OF HIGH AND LOW TAPPING.. & WITHOUT DISTURB 3 WAY
BUT ,,, DURING CALIBRATION I SELECT RANGE BY HART LRV IS 900 MMH20 & URV
IS 1300 MMH20 ,, BUT ,TANK LEVEL SOMETIMES 100 % AT 1100 MMH20 ,
SOMETIMES 1300 MMH20 ..IN THIS CONDITION .. WHOLE LOOP FAILED ,, MAIN
THING IS THAT ,, HOW TO CUSTOME RANGE SELECT ?? AND IF I USED RANGE OVER
THE ORIGINAL CALIBRATE RANGE ,,,THEN WHAT ERROR WILL BE COME ??? HOW TO
ZERO CALIBRATION OF DPT... HOW TO ZERO TRIM BY MANIFOLD ?? AND FOR TANK
LEVEL PURPOSE ... WHICH UNIT I CAN USE ??? IS THERE ANY CALCULATION OR
CALIBRATION .. IF YEH .. THEN PLZ JUST GIVE ME CALIBRATION STEPS FOR DPT..
For crude application in floating roof tank, how to
calibrate a DP Transmitter? How is the floating roof weight
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...
I am having a Phoenix digital to modbus converter. The o/p
of the same is connected to flow computer FB407. But the
digital signals are updated only after one minute in the
flow computer. what may be the cause of delay in
communication? Flow computer is having a scanning period of
less than 1 sec.
A PLC is programmed to drive three motors A, B and C as
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
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
[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
I am an intru engg frm pune n completing mba marketing in
may 2010, what kind of profile would best suit my
educational qualifications??? Also, i will move to US in jan
2011, so this job experience should count Over there too
'coz i want to continue workin even there....
What is the working principle of sox, nox analyzer?(opacity monitor)
Otherwise how to measure the sox,nox?
I m appointed as an automation trainee engineer in small firm
in that I am only the one , my company give me a project on
s7-200 as i m beginner I don't know how to program so please
send me the helpful site so that I complete my project
before deadline....please help me out in this critical
why we use cascade control and feed forward control in 3
element drum level control measurement of steam drum .what
is cascade and feed forward control system ?give example .
how radio frequency level probes works with its
controller ? what is its principle ? pls give me brief
We are using Rosemount 5400 series Radar Level Transmitters
in all types of Sump Applications having oily water
hdrocarbon petrochemical nature. What we are facing the
problem frequently is that always getting reading frezzed
at some value. If we do power recycling , sometimes it is
working . then making same freezing problem. If anybody
faced before such type of problem and also having
solution , Please give the answer.