How flow control valve is working with pnuematic positioner
and I/P convreter from command is given from remote
- 1 Answers
- 3910 Views
- Ecil, GAIL, I also Faced
- E-Mail Answers
Answer Posted / 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 View All Answers
Can anyone convert a 5/2 way or 3/2 way valve into an ISO valve?
Define cryogenic?
why Fahrenheit unit of moistur analyzer transmitter
Explain working principle of lvdt?
What is the principle of capacitance type level transmitter?
Explain the working principle of lvdt?
Describe the functions of the Operator Interface including the considerations related to alarming and display layout/configuration/layers.
when a magnet is heated?
please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com
How to calibrate capillary type level transmitter
how many type conductivity sensor ?
How is work 5/2 sov?
the 3 most common transmitter protocol being in refinery or qatar gas and aramco.
any body who gone thru recent iocl interview.INSTRUMENTATION questions. I need.
Full form of KKS when use DCS.
