The TRICONEX 3723X is an analog input module used in industrial automation and safety instrumented systems, especially within the Triconex ecosystem (often part of the Tricon CX platform) to acquire and condition analog field signals like current or voltage from sensors for processing by a safety controller.
FOXBORO A2H124-24FX｜Ethernet Switch｜
Key Features
Triple Modular Redundancy (TMR) architecture — three independent processing channels with majority voting logic for fault tolerance and high availability.
Analog signal support, typically for current (e.g., 4–20 mA) and/or voltage ranges depending on specific implementation.
High resolution and precision, often with 16-bit resolution and tight accuracy for reliable signal conversion.
Safety certification (e.g., SIL 3 per IEC 61508), suitable for environments with stringent reliability requirements.
Hot-swap capability in many implementations, allowing replacement without shutting down the system.
Typical Use
Oil & gas facilities — monitoring pressure, temperature, and flow in pipelines and refineries.
Chemical and petrochemical plants — capturing critical process variables to prevent losses or unsafe conditions.
Power generation — acquiring sensor data for turbine and boiler safety systems.
Other safety-critical systems, where precise, reliable analog measurement is essential.
Technical Notes
Specifications vary by supplier version, but examples include:
Channels: multiple isolated analog inputs (often 8 or more)
Input types: 4–20 mA current or voltage input support
Resolution: 16-bit or similar high resolution
Power: 24 V DC typical industrial supply
Safety: SIL 3 certification for safety system integration

TRICONEX 3723X｜Analog Input Module｜