TRICONEX 2381 Pulse Input Baseplate for Trident Safety Instrumented System (SIS)

Product Description

The TRICONEX 2381 is a high-reliability pulse input baseplate, a core component of the TRICONEX Trident safety instrumented system (SIS), engineered to provide a secure and isolated interface for connecting pulse input modules (such as PI3381) to the Trident SIS backplane. Designed for SIL 3-certified safety applications, this baseplate delivers stable signal transmission for high-speed pulse signals from field devices (flow meters, encoders, turbine speed sensors) in oil & gas, chemical, petrochemical, and power generation facilities. Built with TRICONEX’s patented triple modular redundant (TMR) architecture, it eliminates single points of failure, while robust channel-level isolation (2500 V AC) and strong EMI immunity ensure stable operation in electrically noisy industrial environments. The 2381 complies with IEC 61508 SIL 3, FM, CSA, and ATEX standards, supports hot-swappable module installation, and incorporates advanced self-diagnostics to monitor signal integrity and module health, making it an essential component for mission-critical pulse signal acquisition.

Key Functions

The TRICONEX 2381 baseplate serves as a physical and electrical interface between pulse input modules and the Trident SIS backplane, enabling high-precision acquisition of pulse signals from field devices. It provides 16 fully isolated channels to eliminate cross-talk and ground loops, ensuring accurate transmission of high-speed pulse signals (up to 100 kHz) for flow totalization, speed monitoring, and position tracking applications. Triple modular redundant signal routing and voting logic ensure that a single channel fault does not compromise system integrity, while built-in self-diagnostics continuously monitor signal continuity, module connection status, and backplane communication, generating real-time alarms for open/short circuits or module disconnection. The baseplate supports hot-swappable maintenance of pulse input modules, allowing replacement without system shutdown, and its rugged design ensures reliable operation in harsh industrial environments with extreme temperatures, vibration, and electromagnetic interference.

Application Scenarios

The TRICONEX 2381 pulse input baseplate is deployed exclusively in safety-critical applications requiring high-speed and high-precision pulse signal acquisition. In oil & gas facilities (offshore platforms, refineries, FPSOs), it connects to turbine flow meters and rotary encoders to provide flow rate and totalization data for emergency shutdown (ESD) and fire & gas (F&G) safety systems. For chemical and petrochemical plants, it supports reactor feed flow monitoring, distillation column speed control, and batch process tracking systems, ensuring compliance with strict safety regulations. In power generation (thermal, nuclear, renewable), it acquires data from turbine vibration sensors, generator speed monitors, and cooling system flow meters to trigger safety interlocks during abnormal operating conditions. The baseplate is also used in mining operations for conveyor belt speed monitoring and in water/wastewater treatment plants for flow measurement systems, where SIL 3 certification and fault tolerance are mandatory requirements.

Technical Specifications