The SAMSON 3730-3 represents the new generation of intelligent electropneumatic valve positioners, engineered to deliver superior precision and reliability while significantly reducing operational costs. As a core component for modern process automation, it accurately translates a 4-20 mA control signal into precise pneumatic pressure to position control valves, ensuring optimal process flow control.
This smart positioner is distinguished by its HART 7 communication protocol, enabling seamless integration into digital asset management systems. A key advancement is its internal non-contact, wear-free AMR sensor, which guarantees reliable and accurate valve lift measurement even under harsh conditions like vibration and moisture, ensuring long-term stability. Remarkably, this new generation model consumes approximately half the compressed air of its predecessors, offering substantial energy savings.
High Energy Efficiency & Air Capacity: Engineered for excellent performance with minimal air consumption. It provides high air capacity for responsive valve actuation while reducing compressed air usage by about 50%, leading to lower operating costs.
Advanced Valve Diagnostics (EXPERTplus): Features integrated EXPERTplus diagnostic software for predictive maintenance. It monitors valve health, supports Partial Stroke Testing (PST) for safety valves, and provides clear status messages per NAMUR NE 107, helping to prevent unplanned downtime.
Universal & Flexible Installation: Offers simple attachment to virtually all common linear and rotary actuators. Compatible with SAMSON direct mounting, NAMUR interfaces per IEC 60534-6-1, and standards like VDI/VDE 3845/3847. It can be installed in any position.
Intuitive Operation & Configuration: Features user-friendly, single-knob menu-driven operation and an LCD with a selectable reading direction for easy use in any mounting orientation. It offers four automatic initialization modes, including a unique “Substitution” mode for safe startup or replacement during ongoing plant operation.
Future-Ready Connectivity: Communicates via the HART 7 protocol and is suitable for connection with SAM VALVE MANAGEMENT, SAMSON’s cloud-based predictive maintenance tool, preparing your assets for Industry 4.0.
Below is a summary of the key technical parameters for the SAMSON TROVIS 3730-3 Smart Valve Positioner.
| Attribute | Specification |
|---|---|
| Model | 3730-3 |
| Manufacturer | SAMSON |
| Device Type | Electropneumatic Positioner |
| Communication Protocol | HART (HART 7) |
| Input Signal | 4 to 20 mA DC, Two-wire system |
| Travel Range (Linear) | 3.6 to 300 mm (depending on mounting) |
| Rotation Angle (Rotary) | 24° to 100° |
| Supply Air Pressure | 1.4 to 7.0 bar (20 to 105 psi) |
| Steady-State Air Consumption | Approx. 65 normal liters per hour (ln/h) |
| Load Impedance | 465 Ω at 20 mA |
| Key Features | EXPERTplus diagnostics, Non-contact AMR position sensor, Four initialization modes, Tight-closing function, Continuous zero monitoring |
| Housing / Protection | Die-cast aluminum or stainless steel / IP66 |
| Ambient Temperature Range | -20 °C to +80 °C |
| Certifications | Suitable for use in Safety Instrumented Systems (IEC 61508/SIL) |
The TROVIS 3730-3 is designed for precise control in demanding applications across various industries, including:
Oil & Gas (refining, pipelines)
Petrochemical and Chemical Processing
Power Generation
Pharmaceutical and Water Treatment
For detailed technical datasheets, configuration support, or specific pricing information for the SAMSON TROVIS 3730-3, please do not hesitate to contact our sales team.
If you have any questions about the specifications or the suitability of this positioner for your application, please contact the Kateteco sales team.
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KateTeco (Tianjin) Technology Co., Ltd. serves as an outstanding partner in the field of industrial fluid automation, specializing in the introduction and integration of high-end valves and instruments. We are committed to providing customers with safe, reliable, and intelligent system solutions. By leveraging global leading product resources and supported by systematic professional training and on-site technical assistance from Emerson’s experienced engineers, we ensure that customers can respond promptly and accurately to technical challenges.
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