Flowserve PMV D20 - Manual (Page 6)

6
is higher than the maximum actuator
pressure rating a supply regulator is
required to lower the pressure to the
actuator’s maximum rating (not to be
confused with operating range). A
coalescing air filter is recommended for
all applications due to the close
tolerances in the positioner.
PMV D20 positioner accessories:
Optional analog feedback system as well
as limit switch unit and a directly
attachable double acting module.
NOTE: The air supply must conform to
ISA 7.0.01 orIEC 770 (a dew point at
least 10
° C/18 ° F below ambient tempera-
ture, particle size below five microns –
one micron recommended – and oil con-
tent not to exceed one part per million).
3.
The PMV D20 is a two-wire loop
powered, 4-20 mA input digital valve
positioner.
The PMV D20 positioner controls
actuators with linear and rotary
mountings.
The PMV D20 is completely powered by
the 4-20 mA input signal. The minimum
input signal required to function is 3,6
mA. As an option the D20 can be
equipped with HART protocol to allow
bidirectional communication.
Since the positioner is insensitive to
supply pressure changes and can
handle supply pressures from 1,5 to 6
barg (22 to 105 psig), a supply regulator
is usually not required; however, in
applications where the supply pressure
PMV D20 overview