Flowserve APEX 5100 Current-to-Pressure Transducers - Manual (Page 4)

PS0003-CV (CVAUTO-200) 05/03 Page: 4 of 4
© 2003, Flowserve Corporation, Printed in USA
Automax Valve Automation Systems
Product Specification
The Apex 5100 I/P Module converts 4-20 mA current signals into 3-15 psi pneumatic signals needed by the
Apex 5000 Positioner. A controller card compares the input signal with an electrical pressure feedback signal
and outputs voltage, which is applied to a coil.
The coil voltage varies a magnetic field strength which influences a metallic diaphragm. This diaphragm
throttles air flow out of the positioner input chamber (supplied by the internal regulator). As voltage and field
strength increase, the diaphragm moves closer to the coil nozzle, reducing air flow and increasing positioner
input chamber pressure.
The controller circuit board features temperature compensation and input signal filtration to provide accurate
3-15 psi output signals.
Principles of Operation:
Representative:
Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.
Flow Control Division Springville, Utah 84663-3004 Cookeville, TN 38501
www.flowserve.com Phone: 801 489 8611 Phone: 931 432 4021
AMBIENT
TEMP
SENSOR
REGULATOR
XMTR
AMP
DRIVE
AMP
INPUT
AMP
RFI
FILTER