Answer Posted / sbt, gmm, ypp
YES, ABSOLUTELYU. WE CAN USE CONTROL VALVE W/O POSSITIONER.
BASICALLY POSSITIONER IS USED FOR QUICK OPERATION OF
CONTROL VALVE. FOR AN EXAMPLE: IF CONTROL VALVE OPERATING
RANGE IS 0.6 TO 2.6 KG/CM2, AT THAT TIME POSSIOTIONER IS
USED FOR AMPLIFICATION FOR THE HIGH PRESSURE CONTROL VALVE
EVEN IF INPUT PRESSURE IS 0.2 TO 1.0 KG/CM2.
ANS. GIVEN BY: SBT, GMM, YPP (NFIL STAFF)
| Is This Answer Correct ? | 32 Yes | 6 No |
Post New Answer View All Answers
What are the interlocks we have to check during the start up of LP/HP compressor?
I have energy meter for educational project having 0.5s class but my friend need 0.2s class meter , which one is good for that purpose and what is the actual difference of that two classes , need very easy example also.??
WHAT ARE THE INSTRUMENTAL DIAGRAMSOF VALVES?
What is instrumentation control?
What are the uses of orifice plates?
What you mean by multi stage control vavles?
1.can you use SCADA instead of DCS,DCS instead SCADA 2.Difference between DCS and PLC,can their role be reversed i.e. role interchange 3.Difference between RTU and PLC
the 3 most common transmitter protocol being in refinery or qatar gas and aramco.
Sir,I am going to sit for IOCL written test exam. recently.Can anyone tell me the name of 'Objective type Question Book on Instrumentation Engineering ' which will help me. Pl. mail to bidyut_71@rediffmail.com / bidyut.saha2008@indiatimes.com / bidyut.saha09@yahoo.in
Why upper weighing limit of electronics balance is 90% of the total weighing capacity?
Give 2 application of quartz crystal used for process parameter measurement.
Why do we have earthing cable in branch cable and shield in the same cable?
hi! i want to know about mpse exam.
anybody having Qatar Petroleum questions for instrument Technician offshore ....please send me
How to Calibrate Flow Switch in field