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
Why are the uses 24vdc in industries
how to calibrate steam control valve in steam turbine
Explain operation of Haskel pump.
why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.
What is instrumentation instrumentation engineering?
what are procedure of sox-nox calibration
How to Calibrate Level Switch in field
how to measure oxygen which methods are using?
Can anybody tell me which type of question are asked in the interview for the FORMULATION(Pharma) as a instrumentation engineer, & question in building managment system.
Gas equation
With N nodes and B branches what will have a network ???
For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?
What are the different types of thermistors used in industries? How to the operation of typical thermistor?
How to calibrate smoke Dectector
How to work togather like sov,limit switch,proxy switch and booster in xv
