Answer / mani

from dcs we give 4 to 20 ma to i/p converter. from i/p we give the 3 to 15 psi pnematic signal given to cv.

Answer / bert

The type of signal going to control valve is either a
pneumatic or electronic signal. For a pneumatic signal its
3 to 15 PSI or 0.2 to 1.0 kg/cm2. For electronic signal its
4 to 20 mA.

Answer / abdulbasit137@hotmail.com

two types signal come control valve 1.pneumatic signal 3 to
15 psi (2)electronic analog signal 4 to 2o milla amp

Answer / parag pathak

Control Valve is final control element of clost loop. So
signal coming to control valve will be in pneumatic form
but depends on size of Valve. It can be 3-15 PSI or 0.2 -
1kg/cm2 but it is not fixed. There is one instrument called
Positioner which will convert 3-15 PSI signal to desired
siganl depending on Control valve.

For any Contol Valve signal will come from Control room in
the form of 4-20 mA. this 4-20 mA signal was converted to 3-
15 PSI signal by instrument called I/P converter. This
siganl will go to positioner and the positioner o/p is
given to valve actuator to get desired opening and closing.

Answer / rajkumar.diice

The signal type depends on
the location of control valve!
For explosive hazard area the
signal be pneumatic and be 3
to 15psi! The converters be
mounted in somewhat
distanted area! For all control
valves the signal be 4to 20mA
over 1to 5 volts from a
control room! For inbuild
current to pressure
converters control valves the
signal be 4to20mA over 1to
5volts dc

Answer / susant

from dcs analog output signal 4-20ma dc provided to control
valve

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