Description

The Foxboro FBM202 (P0914ST) is a high-performance Thermocouple Input Module engineered for the Foxboro I/A Series and Foxboro Evo distributed control systems. This module provides eight isolated input channels designed for thermocouple or millivolt signal acquisition, essential for precise thermal monitoring in demanding industrial environments such as petrochemical refineries, utility power plants, and metal smelting operations. The FBM202 features integrated cold junction compensation (CJC) and advanced noise filtering to ensure signal stability in electrically noisy environments, facilitating tighter process control and early detection of thermal anomalies.

Features

• Eight galvanically isolated input channels for enhanced signal integrity and ground loop prevention.
• Supports a wide range of thermocouple types including B, E, J, K, N, R, S, and T, as well as -10 to +100 mV inputs.
• Integrated cold junction compensation (CJC) for accurate temperature measurement.
• High-speed Sigma-Delta analog-to-digital conversion with 15-bit resolution.
• Continuous self-diagnostics including sensor burnout detection and internal calibration monitoring.
• Supports hot-swapping functionality within modular baseplates for simplified maintenance.
• Communicates via the 2 Mbps Module Fieldbus.

Applications

This module is optimized for critical process control applications requiring high-accuracy temperature sensing. Typical deployments include monitoring reactor temperatures, furnace heat profiles, steam turbine thermal management, and general-purpose millivolt signal acquisition in hazardous or high-EMI industrial zones.

Technical Specifications

Installation Guidelines

• Ensure the system power is disconnected before installing or removing the module from the baseplate.
• The module supports hot-swapping; however, ensure the baseplate is properly configured for the specific FBM type.
• Use shielded twisted-pair cabling for all field inputs to minimize electromagnetic interference (EMI).
• Maintain proper grounding practices for the I/A Series rack to ensure the effectiveness of the galvanic isolation.
• Ensure adequate ventilation around the module to maintain operation within the specified -20 to +70 deg C range.
• Handle with standard ESD precautions to protect internal electronic components.

Compliance and Certifications

The FBM202 P0914ST is designed for use in hazardous locations, holding certifications for Class I, Div 2, ATEX Zone 2, and CE compliance.

FAQ

Is this module compatible with all I/A Series systems?
The FBM202 is designed for Foxboro I/A Series and Foxboro Evo systems. Please verify your specific baseplate and software revision compatibility before installation.

Does this module require external cold junction compensation?
No, the FBM202 features integrated cold junction compensation (CJC) for all eight channels.