The SAMSON TROVIS 3793 stands at the forefront of smart valve positioning technology, engineered to meet the most demanding requirements of large-volume pneumatic actuators and critical process control applications. As a core component of modern Industrial 4.0 environments, this electropneumatic positioner transforms your control valve into an intelligent asset with powerful diagnostic and communication capabilities.
It is designed for universal application and exceptional reliability, offering two primary variants to suit different functional needs:
TROVIS 3793: The standard, intelligent positioner designed for precise modulating control and advanced plant asset management.
TROVIS SAFE 3793: A specialized version for use in Safety Instrumented Systems (SIS). It features integrated Partial Stroke Testing (PST) functionality, enabling automated testing of emergency shutdown (ESD) or on/off valves without disrupting the process, thereby ensuring functional safety and compliance.
1. Outstanding Performance and Air Capacity
The TROVIS 3793 is specifically designed for high air capacity, ensuring fast and powerful actuation even for large valves. This “high air performance” eliminates the need for additional boosters in most applications, simplifying your system design.
2. Future-Ready Modular Design
Its modular architecture offers unparalleled flexibility. Pneumatic and optional functional modules (e.g., binary inputs/outputs, additional pressure sensors) can be easily installed or exchanged in the field, allowing you to customize the positioner for specific tasks and adapt to future needs without replacing the entire unit.
3. Universal and Robust Installation
The positioner can be easily attached to virtually all common linear and rotary actuators. It supports direct SAMSON connections, NAMUR interfaces per IEC 60534-6-1, and mounting according to VDI/VDE 3845/3847 standards. A key innovation is its non-contact, wear-free position sensing system, which guarantees long-term accuracy and reliable operation even under challenging conditions like vibration, dust, and moisture.
4. Intelligent Diagnostics and Simple Operation
Featuring integrated EXPERTplus diagnostics, the TROVIS 3793 continuously monitors valve health, enabling predictive maintenance and reducing downtime. It provides clear plain-text display with status messages conforming to NAMUR Recommendation NE 107, ensuring quick fault identification. Intuitive one-knob, menu-driven operation and a rotatable LCD make setup and local control simple from any mounting position.
5. Advanced Functionality
Four Initialization Modes: Includes a unique “Substitution” mode for safe start-up and replacement of a positioner while the plant is in operation, without needing to move the valve.
Integrated Monitoring: Comes with an internal temperature sensor, operating hours counter, and pressure sensors to monitor supply and signal air.
Software Configuration: Easily configured using the free TROVIS-VIEW software via the SSP interface. Key parameters like air capacity and tight-closing function are adjustable via software.
| Attribute | Specification |
|---|---|
| Manufacturer / Model | SAMSON / TROVIS 3793 Series |
| Key Variants | • TROVIS 3793: Intelligent positioner with HART® communication. • TROVIS SAFE 3793: Positioner with HART® and integrated Partial Stroke Test (PST) for safety systems. |
| Actuator Type | Single-acting or Double-acting |
| Input Signal | 4 to 20 mA DC, two-wire system (electrical load 495 Ω) |
| Communication Protocol | HART® |
| Supply Air Pressure | 1.4 to 7.0 bar (20 to 105 psi) |
| Air Consumption (Steady State) | Approximately 110 Normal liters per hour (ln/h) |
| Travel Range (Linear) | 3.6 to 200 mm (up to 300 mm with special mount) |
| Rotation Angle (Rotary) | 24° to 100° opening angle |
| Ambient Temperature Range | Standard: -20 °C to +80 °C. Option: -45 °C to +80 °C with metal cable gland. |
| Housing / Protection | Die-cast aluminum or stainless steel. Protection class: IP66 / NEMA 4X. |
| Safety Certification | Compliant with IEC 61508 for use in Safety Instrumented Systems (Suitable for SIL 2 as a single device, SIL 3 in redundant configuration). |
The SAMSON TROVIS 3793 is the ideal choice for demanding control tasks across various industries:
Oil & Gas and Petrochemicals: For precise control and safety shutdown functions.
Power Generation: In critical control loops for throttle and feedwater services.
Chemical Processing: Where reliability under challenging conditions is paramount.
Water & Wastewater: For large valve control in treatment and distribution systems.
Any application involving large pneumatic actuators, challenging environmental conditions, or requiring integration into modern asset management systems.
For detailed technical datasheets, configuration support, or to discuss which TROVIS 3793 variant is right for your application, please contact our sales team.
If you have any questions about specifications or suitability 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.
With full lifecycle services covering installation, commissioning, operation, maintenance, and replacement, we deliver a true one-stop service system. This allows our customers to enjoy seamless, efficient, and high-quality assurance, supporting enterprises in achieving stable operation and continuous upgrades.
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