High Quality Samson 3730-5 Electropneumatic Valve Positioner with FOUNDATION Fieldbus Communication

The SAMSON Type 3730-5 is a FOUNDATION™ Fieldbus digital positioner for precise control of linear and rotary actuators. It receives the cyclic reference variable over the fieldbus, compares it with the valve travel, and issues a pneumatic output signal. An integrated PID function block enables direct field control, while advanced diagnostics ensure reliable operation and predictive maintenance in demanding process environments.

• FOUNDATION™ Fieldbus communication with PID function block for local process control.
• EXPERT or EXPERT+ diagnostics including valve signature, step response, and hysteresis analysis.
• Optional solenoid valve for forced venting (SIL 4 compliant) and inductive limit switch.
• Non-contact travel sensor with high accuracy (±0.1 % sensitivity).
• Volume restriction Q for optimized air delivery and fast response.
• Robust aluminum housing with IP 65 protection and optional stainless steel version.

• Nominal travel: 3.6–200 mm or 24°–100° (adjustable)
• Supply air pressure: 1.4–6 bar (20–90 psi)
• Bus power supply: 9–32 V DC, max. current 15 mA
• Air consumption (steady state): Approx. 110 l/h
• Ambient temperature: –40 to +80 °C (–40 to +176 °F)
• Degree of protection: IP 65 / NEMA 4X
• Explosion protection: II 2 G EEx ia IIC T6 / II 2 D IP 65 T 80 °C (ATEX)

• Chemical and petrochemical plants requiring fieldbus integration.
• Oil & gas platforms with hazardous area approvals.
• Power generation for precise steam and feedwater valve control.
• Water and wastewater treatment with continuous diagnostics.
• General process industries needing PID control in the field.

• How does the PID block work? It controls the process variable directly in the positioner using FOUNDATION Fieldbus.
• What diagnostics are available? EXPERT+ provides valve signature, step response, and hysteresis tests.
• Is it suitable for SIL applications? Yes, with the optional SIL 4 solenoid valve.
• How long does initialization take? Several minutes, depending on actuator size.
• Can it handle rotary actuators? Yes, with reversing amplifier for double-acting types.

Phone/WeChat/WhatsApp: +8613916209596

Email: svetama@gbsxj.com

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