Air Pressure Regulator 4708 SAMSON Valve Positioner 3730-1 3730-3 3730-5 Digital Valve Controller for Pneumatic Control Valves

Samson 3730-3 is an electropneumatic positioner for single-acting pneumatic actuators. It accepts a 4–20 mA input signal and provides accurate valve positioning with HART communication. The unit is known for its simple operation, vibration resistance, and automatic adaptation to different valves and actuators – a common choice in industrial control loops.

• Automatic start-up and self-calibration
• Rotary pushbutton with clear LCD menu
• HART protocol for remote configuration
• Tight-closing function option
• Non-contact position sensing
• Low air consumption in steady state
• Robust against environmental effects

• Input: 4–20 mA DC, two-wire, reverse polarity protected
• Min Current: 3.6 mA (display), 3.8 mA (operation)
• Supply Air: 1.4–7 bar (20–105 psi)
• Air Quality: ISO 8573-1 Class 4 particles, Class 3 oil, dew point 10 K below ambient
• Hysteresis: ≤0.3 %
• Sensitivity: ≤0.1 %
• Ambient Temperature: –20 to +80 °C (standard); –45 to +80 °C with metal gland
• Protection: IP66
• Housing: Aluminum or stainless steel 1.4581

• Linear pneumatic control valves
• Rotary pneumatic actuators
• General process control
• Plants requiring HART communication

Q: Local operation possible? A: Yes – rotary pushbutton and LCD display.

Q: Air consumption? A: Very low in steady state.

Email: edwardzhao@gbsxj.com

Phone/WeChat/WhatsApp: +8615000725058

• Samson 3730-0 (basic version)
• Samson 3730-5 (PROFIBUS DP)
• Samson pneumatic actuators