The SAMSON TROVIS SAFE 3730-6 is a high-performance, electropneumatic valve positioner engineered for the most demanding applications, particularly within Safety Instrumented Systems (SIS). As part of the renowned TROVIS 3730 series, this “SAFE” variant builds upon the standard HART-enabled model by integrating critical features for functional safety and advanced predictive maintenance.
Its core function is to provide precise and reliable positioning of pneumatic control valves—both linear and rotary types—based on a standard control signal. The integrated pressure sensors for monitoring supply and signal air pressure provide an enhanced level of control and diagnostics. The TROVIS SAFE 3730-6 is self-calibrating and automatically adapts to the connected valve and actuator, ensuring optimal performance from the start and simplifying commissioning.
Designed for challenging environments, it is built with a robust die-cast aluminum or optional stainless-steel housing, offering high protection (IP66/NEMA 4X) and corrosion resistance.
Certified for Safety Instrumented Systems (SIS): Compliant with IEC 61508 standard, this positioner is suitable for use in safety-related applications up to SIL 2 as a single device and SIL 3 in a redundant configuration. This makes it ideal for emergency shutdown (ESD) and critical on/off valves.
Integrated EXPERTplus Diagnostics: Features advanced, integrated diagnostics software that supports Partial Stroke Testing (PST) and full stroke testing for valves in safety applications, enabling proactive maintenance and proof testing without process interruption.
Enhanced with Pressure Sensors: As an upgrade to the 3730-3 model, it includes integrated sensors to continuously monitor supply air and signal pressure, providing valuable data for diagnostics and performance monitoring.
Robust, Wear-Free Design: Utilizes a calibrated, non-contact travel sensor with no gears or mechanical parts susceptible to wear, guaranteeing long-term accuracy and reliability even under vibration.
Simple and Flexible Operation: Features a single-knob, menu-driven interface and a rotatable LCD for easy operation and readability in any mounting position. It offers four initialization modes, including a “Substitution” mode for safe startup or replacement while the plant is running.
Universal Compatibility: Can be attached to all common single-acting and double-acting linear actuators (per IEC 60534-6) and rotary actuators (per VDI/VDE 3845), offering exceptional application flexibility.
The table below summarizes the key technical attributes of the SAMSON TROVIS SAFE 3730-6 positioner.
| Attribute | Specification |
|---|---|
| Model / Designation | TROVIS SAFE 3730-6 |
| Manufacturer | SAMSON AG |
| Device Type | Electropneumatic Positioner with Pressure Sensors |
| Communication Protocol | HART |
| Input Signal | 4 to 20 mA DC, two-wire system |
| Key Safety Feature | Integrated diagnostics for Partial Stroke Test (PST) |
| Safety Certification | IEC 61508, suitable for SIL 2 / SIL 3 applications |
| Supply Air Pressure | 1.4 to 7.0 bar (20 to 105 psi) |
| Steady-State Air Consumption | Approx. 110 ln/h (normal liters per hour) |
| Travel Range (Linear) | 3.6 to 200 mm (up to 300 mm with special mount) |
| Rotation Angle (Rotary) | 24° to 100° opening angle |
| Housing Material | Die-cast aluminum or stainless steel |
| Protection Class | IP66 / NEMA 4X |
| Ambient Temperature Range | -20 °C to +80 °C (Standard); Option for -45 °C to +80 °C |
| Configuration Software | TROVIS-VIEW via SSP interface |
The TROVIS SAFE 3730-6 is designed for critical control and safety functions across various industries:
Safety Instrumented Systems (SIS) and Emergency Shutdown (ESD) valves
On/Off service for critical process valves
Oil & Gas, Petrochemical, and Chemical Processing plants
Power Generation facilities
Any application with challenging environmental conditions or transport times
For detailed technical datasheets, configuration support, or to discuss your specific safety application requirements, please contact our sales team.
If you have any questions about the specifications or the suitability of the SAMSON TROVIS SAFE 3730-6 for your application, please contact the Kateteco sales team.
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