How flow control valve is working with pnuematic positioner and I/P convreter f

How flow control valve is working with pnuematic positioner
and I/P convreter from command is given from remote

Question Posted / m k selvam

1 Answers
4582 Views
Ecil, GAIL, I also Faced
E-Mail Answers

How flow control valve is working with pnuematic positioner and I/P convreter from command is given..

Answer / carl_ellis

A controller (the remote device) generates an electronic
4-20mA output signal which tells the valve what its position
should be.

The 4-20mA signal is an input to an I/P
(current-to-pneumatic) transducer, which creates a pneumatic
output signal proportional to the 4-20mA electronic signal
from the controller, probably a 3-15psi pneumatic signal.

The pneumatic control signal is an input to the pneumatic
positioner, which mechanically senses the valve's position.
The positioner drives the actuator with as much supply air
pressure as is necessary to drive the valve to position
demanded by the control signal.

Carl Ellis
Measure First

Is This Answer Correct ?

2 Yes

0 No

Post New Answer

More Instrumentation Interview Questions

HOW TO SOLVE PROBLEM WITH ENRAF LEVEL TRANSMITTER 854 ATG THAT PASSWARD DO NOT Exist INTO TRANSMITTER TO ADJUST LEVEL WITH PORTABLE PET 847, WRITTEN WRONG PASSWORD , I AM SURE THAT DEFAULT PASSWARD (W2=ENRAF2) IS THIS TRANSMITTER NEED TO REPLACE SOFTWARE AND HOW?

0 Answers Lerco,

what is the zero elevation and zero supresstion in level measurement, how can use it?

2 Answers GAIL,

Hello Friends do you know this answer of this Question? Which color you would use when there is Somthing not correct or need to change In P&ID? i mean color that use for highlight that need to update in P&ID. Yellow Highlighter ? Red color ? Blue Color ? Appreciate for your answer. Thanks Blue Color

2 Answers

WHEN BOTH WIRES OF THERMOCOUPLE R SHORTED WHAT IS THE OUTPUT THE TEMP ARE 0,30,250,320

13 Answers

WHEN DO WE GO FOR FMCW TYPE RADAR & PW TYPE RADAR ?

1 Answers

what is meant by control valve sizing?

3 Answers

An RTD is a_________________________.it works as follows

2 Answers

How many problems can be occurring in solenoid valve? And how it can be rectified?

1 Answers Adgas,

how to calculate the total flow in square root

0 Answers PTI, Qatar Kentz,

So I'm a first year apprentice and I'm having a tough time with knowing the difference between AI, AO, DI, DO. I'm having a hard time understanding what devices are which and why. Can someone explain this to me?

2 Answers

what is all types of analyzer in water production plant?

1 Answers Marafiq,

canu tell me why 4-20 ma and why not this 3-25ma?please give reason of this value.

6 Answers

For more Instrumentation Interview Questions Click Here