TRICONEX 3401S2 (AI3401 S2) 16-Channel Analog Input Module for Tricon Safety Instrumented System (SIS)

Product Description

The TRICONEX 3401S2 (AI3401 S2) is a high-reliability 16-channel analog input module, a core component of the TRICONEX Tricon triple modular redundant (TMR) safety instrumented system (SIS). Engineered for SIL 3-certified safety applications, it provides isolated, high-precision signal acquisition from field sensors (pressure, temperature, flow, level transmitters) in hazardous industrial environments. Built with TRICONEX’s patented TMR architecture, it eliminates single points of failure, while robust channel-level isolation and strong EMI immunity ensure stable operation in electrically noisy settings. The 3401S2 complies with IEC 61508 SIL 3, FM, CSA, and ATEX standards, supports hot-swappable maintenance, and incorporates advanced self-diagnostics to monitor input integrity and module health, making it an essential component for mission-critical safety interlock and process monitoring systems.

Key Functions

The TRICONEX 3401S2 module converts analog signals from field sensors into digital values for the Tricon SIS controller, enabling high-precision safety interlock and process monitoring. It provides 16 fully isolated channels supporting universal input types (4-20mA, 0-10V, thermocouple, RTD) via software configuration—no hardware changes needed. Triple modular redundant signal processing and voting logic ensure that a single channel fault does not compromise system integrity, while built-in self-diagnostics continuously monitor signal validity, input circuit continuity, and module health, generating real-time alarms for open/short circuits or out-of-range values. Channel-level isolation prevents cross-talk and ground loops, and the module supports hot-swappable replacement without system shutdown, maximizing uptime. LED status indicators enable quick troubleshooting of channel-level faults.

Application Scenarios

The TRICONEX 3401S2 analog input module is deployed exclusively in safety-critical applications requiring SIL 3 certification and fault tolerance. In oil & gas facilities (offshore platforms, refineries, FPSOs), it acquires data from pressure transmitters, flow meters, and level sensors for emergency shutdown (ESD) and fire & gas (F&G) safety systems. For chemical and petrochemical plants, it supports reactor temperature/pressure monitoring, distillation column control, and toxic gas detection systems, ensuring compliance with strict safety regulations. In power generation (thermal, nuclear, renewable), it acquires data from turbine vibration sensors, boiler pressure transmitters, and cooling system monitors to trigger safety interlocks during abnormal operating conditions. The module is also used in pharmaceutical manufacturing for batch process safety monitoring and in mining operations for conveyor belt and hoist safety systems, where SIL 3 certification and fault tolerance are mandatory requirements.

Technical Specifications

• Global Inventory Network: 121 shared inventories worldwide, enabling direct procurement from overseas warehouses—supporting faster delivery and reduced logistics costs.
• Pricing & After-sales: Competitive prices paired with reliable after-sales warranty services.
• Customer Coverage: Serving clients across regions including the United States, Germany, Japan, South Korea, United Kingdom, France, Italy, Canada, Brazil, India, Australia, Russia, Spain, Netherlands, Switzerland, Sweden, Belgium, Austria, and Turkey.
• Product Quality Assurance: All products are brand new and original. Spare parts include a 1-year warranty, and all items undergo pre-delivery testing and certification.
• Discount Policy:
• Multi-product orders qualify for custom discounts (contact us for details).
• We offer further price adjustments if you receive a lower quote for identical products from other suppliers, tailored to your budget.