Control Valve Accessories


3730-0 - Electro-Pneumatic Positioner

Operation: Linear

Travel: Up to 200mm

Input: DIP switches and potentiometers

Control: PD

Calibration & Tuning: Configured using DIP switches & Potentiometers

The Type 3730-0 electro-pneumatic positioner is a basic control positioner designed to work in general industrial applications. This positioner can work with single-acting linear control valve inherently and double-acting linear control valve with the addition of a reversing amplifier.The basic design of the positioner is tailored for SAMSON control valves with predefined travel spans programable via DIP switch inputs.The potentiometer-based travel sensor of the Type 3730-0 is not susceptible to wear often found in gear-based travel sensors.The travel range of the Type 3730-0 can be restricted up to 1/5 maximum stroke as well as operated in split range.The analog (continuous) pneumatic output prevents pulsing operations in case of leaking actuator.

Want to Learn More?
Let us help you find the right product for your application.

Call Us

1 (877) SAMSON8 (USA)

24 Hour Service & Maintenance

(281) 383-9859

Email us

We're here to help
Write to us now

Features & Benefits

  • Simple attachment to common linear actuators.
  • Fast-acting analog controller offer high control accuracy without dead band
  • Low steady state air consumption less than 0.06 scfm at all supply pressures
  • Aluminum or optional Stainless-Steel housing.
  • Up to SIL 3 capable device
  • Zero and span adjusted by potentiometers
  • Fail-safe position is selected by DIP switch S1
  • Defined SAMSON rated travel is set by DIP switches S2 & S3
  • Direction of action selected by DIP switch S4
  • Output pressure limitation of 35 psi enabled by DIP switch S5
  • Reduce standard positioner gain by DIP switch S6
  • Set point range of 4 to 20mA, 4 to 12mA or 12 to 20mA selected by DIP switches S7 & S8
  • Tight-closing function with fixed switching point enabled by DIP switches S9 & S10



Related Documents