TRICONEX | 4351A | 3604E | 16-Channel Analog Input Module

Product Overview

The TRICONEX 4351A is a high-performance analog input module designed for mission-critical safety systems within the Triconex Tricon V11 platform. As a SIL3-certified component, this 16-channel module delivers precision measurement capabilities for 4-20mA signals while maintaining the rigorous safety standards required in hazardous environments. The TRICONEX 4351A employs Triple Modular Redundant (TMR) technology to ensure continuous operation with <0.1% measurement error, even in the presence of dual faults. Its galvanic isolation (up to 1500V AC) prevents ground loops and protects sensitive control systems from transient voltages. Compatible with HART-enabled field devices, the module supports advanced diagnostic functions through its integrated HART multiplexer. The TRICONEX 4351A seamlessly integrates with Tricon Main Processors like MP3008, providing <25ms update rates for safety instrumented systems (SIS) in process industries.

Technical Specifications

Key Features & Benefits

The TRICONEX 4351A combines measurement precision with robust safety features:

TRICONEX-4351B

TMR Architecture: Three independent measurement circuits per channel ensure continuous operation
Smart Diagnostics: Real-time monitoring of open wire, short circuit, and signal integrity
HART Integration: Simultaneous analog and digital communication without signal interference

Its automatic cold junction compensation ensures temperature measurement accuracy within ±0.5°C. The module supports hot-swap replacement with automatic configuration recognition, minimizing system downtime. Front-accessible terminals with screw-clamp design simplify wiring, while LED status indicators provide instant channel health visualization.

Application Areas

The 4351A excels in oil refineries for pressure transmitter monitoring and flow control systems. In chemical processing, it enables precise temperature control of exothermic reactors. Power generation applications include turbine vibration monitoring and boiler feedwater control. The module’s hazardous location certification (Class I Div 2) makes it ideal for offshore drilling platforms and petrochemical storage facilities.

Related Products

• TRICONEX 4351B – Enhanced version with 24-channel capacity
• TRICONEX 4329 – Digital input module for safety interlocks
• TRICONEX 8312 – High-density digital output module
• TRICONEX 3805E – Main processor unit with enhanced memory
• TRICONEX 9761-210 – Redundant power supply module