Samson 3730 31 Intelligent Valve Positioner with Feedback New Original

• Customization: Available
• Temperature: -40-80ºC
• Media: Gas, Oil, Water, Acid
• Model NO.: 3730-31
• Standard: Standard
• Connection Mode: 1/4NPT
• Power: Aerodynamic
• Material: Aluminium
• Type: Controllers
• Weights: 3kg
• Warranty: One Year
• Single- and Double-Acting: Single
• Intelligent or Not: Yes
• Transport Package: Carton Packaging
• Specification: 50*50*40
• Trademark: SAMSON
• Origin: German
• HS Code: 8481901000
• Production Capacity: 100
• Package Size: 30.00cm * 20.00cm * 10.00cm
• Package Gross Weight: 3.500kg

Product Description

Clarification

1. Product Overview
The SAMSON 3730-31 is an intelligent digital valve positioner from the 3730 series, supporting HART communication protocol. Designed for pneumatic control valves in industrial automation, it delivers high-precision control, self-diagnostics, and broad industrial compatibility, making it suitable for oil & gas, chemical, power generation, and water treatment applications.

2. Key Features
High-precision control: Positioning accuracy up to ±0.5% for precise flow, pressure, and level regulation.
HART communication: Enables remote configuration, calibration, and diagnostics, compatible with AMS/PDM systems.
Non-contact feedback: Uses magnetic Hall-effect sensors to eliminate mechanical wear and enhance long-term reliability.
Modular design: Electronics module can be detached separately without disconnecting pneumatic/electrical connections.
Versatile mounting: Fits linear/rotary actuators, compliant with IEC 60534-6 & VDI/VDE 3845 standards.
Robust construction:

IP66 protection against dust/water ingress
Operating temperature: -40°C to +85°C
Explosion-proof certifications: ATEX EExi / FM / (intrinsic safety)
3. Technical Specifications
Parameter
Specification
Input signal
4-20mA HART
Supply pressure
1.4-6 bar (20-90 psi)
Output pressure
0-6 bar (0-90 psi)
Stroke range
3.6-200mm (linear) / 24-100° (rotary)
Communication
HART (3730-3), Profibus PA (3730-4), FF (3730-5)
Diagnostics
EXPERTplus diagnostics (NAMUR NE 107 compliant)
4. Typical Applications
Oil & Gas: Flow control valves (refineries, ethylene plants)
Power Generation: Boiler/turbine valve regulation
Water Treatment: Precision control of water quality valves
Pharma/Food: Process control in sterile environments
5. Key Advantages
Smart functionality: Auto-calibration, remote monitoring, predictive maintenance
High reliability: Non-contact design for harsh operating conditions
Flexible integration: Multiple protocol options for control system compatibility
For detailed technical documents, refer to SAMSON official manuals or authorized distributors.

Specification

Valve positioner diagnostic level
single- and double-acting	Single
Weight	3kg
Material	aluminium
With or without feedback	YES

Company Profile

Certifications

FAQ

Q: Is the product authentic?
A: All the products we sell are new and original genuine products with one year warranty.

Q: How long is the product delivery time?
A: We have our own warehouse and a large number of stock products, regular models we have in stock, special models we need to factory order and can be delivered quickly.

Q:Do you have a price advantage?
A: Some of the products we are the authorised agent in China region, the price we all have competitive advantage.