The SAMSON TROVIS 3730-0 is a reliable and high-performance electropneumatic valve positioner designed for essential, precise control in a wide range of industrial applications. Its core function is to accurately translate a 4-20 mA DC input control signal from your control system into a corresponding pneumatic output, ensuring the control valve’s position (the controlled variable) perfectly matches the command signal (the setpoint).
This positioner is engineered for simplicity and durability. It offers straightforward installation on various pneumatic actuators using DIP switches and potentiometers for configuration, making it an excellent choice for general process control where advanced digital communication is not required. Its robust design, featuring a die-cast aluminum or optional stainless steel housing with IP66 protection, ensures reliable operation even in challenging environmental conditions.
Simple & Flexible Installation: Can be easily mounted on SAMSON direct interfaces, NAMUR flanges, or linear actuators with rod-type yokes per IEC 60534-6-1 standard. It supports any required mounting position.
High Control Accuracy & Reliability: Features a fast-acting analog control loop for precise adjustment without dead zones and continuous pneumatic output. The calibrated travel sensor is not subject to wear from mechanical gearing, ensuring long-term stability.
Energy Efficient Operation: Maintains low steady-state air consumption of approximately 110 ln/h, independent of supply and output pressure, reducing operational costs.
Enhanced Safety Functions: Equipped with configurable features via DIP switches, including adjustable output pressure limits, a tight-closing function, and selectable fail-safe positions for increased process safety. It is designed to prevent pulsating pneumatic output in case of actuator leaks.
Safety Instrumented Systems (SIL) Ready: Certified according to IEC 61508, making it suitable for use in Safety Instrumented Systems, supporting up to SIL 3 as a device.
The table below summarizes the key technical attributes of the SAMSON TROVIS 3730-0 valve positioner.
| Attribute | Specification |
|---|---|
| Manufacturer / Model | SAMSON / TROVIS 3730-0 |
| Device Type | Electropneumatic Valve Positioner |
| Input Signal | 4 to 20 mA DC, two-wire system |
| Supply Air Pressure | 1.4 to 6.0 bar |
| Travel Range | 5.3 mm to 200 mm |
| Steady-State Air Consumption | Approx. 110 ln/h (normal liters per hour) |
| Electrical Load | < 300 Ω |
| Actuator Compatibility | Single-acting or double-acting (requires a Type 3710 reversing amplifier for double-acting) |
| Housing Material / Protection | Die-cast aluminum or optional stainless steel / IP66 |
| Configuration Method | DIP switches and potentiometers |
| Safety Certification | IEC 61508 / SIL |
The SAMSON 3730-0 is a versatile solution suitable for precise flow, pressure, and level control across numerous general industrial sectors. Common application areas include:
Oil & Gas (upstream, midstream, refining)
Chemical & Petrochemical Processing
Power Generation
Water & Wastewater Treatment
Pharmaceutical, Food & Beverage
HVAC, Pulp & Paper, and Industrial Gases
For detailed technical datasheets, specific configuration support, or pricing information, please do not hesitate to contact our sales team.
If you have any questions about the specifications or the suitability of the SAMSON TROVIS 3730-0 for your application, please contact the Kateteco sales team for expert support.








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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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