FBM207C RH917GY analog input module

The FBM207C RH917GY is a high-precision analog input module developed by Foxboro for its I/A Series Distributed Control System (DCS). It is specialized in acquiring and processing temperature and standard analog signals from industrial field sensors, serving as a core front-end component for accurate process monitoring in harsh industrial environments. Below is its detailed information:

1. Core Functions

Multi-Type Signal Acquisition: Focuses on collecting temperature signals (thermocouple/TC and resistance temperature detector/RTD) and standard industrial analog signals (4-20mA current, 0-10V voltage). This allows it to connect with temperature sensors, pressure transmitters, flow meters, and other field devices.
Built-In Signal Conditioning: Integrates critical compensation functions—cold junction compensation for TCs (eliminating temperature drift from ambient changes) and lead resistance compensation for RTDs (correcting errors from long wiring). It also includes anti-interference filters to reduce industrial noise impact.
High-Precision Conversion & Transmission: Converts acquired analog signals into 16-bit digital data, ensuring minimal signal loss during transmission to the I/A Series DCS. This supports precise process control and data analysis.
Real-Time Fault Diagnostics: Monitors module power status, channel circuit integrity, and signal anomalies (e.g., TC short circuits, RTD open circuits) in real time. Faults trigger local LED alarms and upload diagnostic data to the DCS for quick troubleshooting.

2. Technical Specifications

Category	Specific Parameters
Input Channels	8 independent differential channels (supports simultaneous signal acquisition)
Supported Signals	- Thermocouples (TC): J, K, T, E, R, S, B, N types- RTDs: Pt100, Cu100 (3-wire/4-wire)- Standard analog: 4-20mA DC (2-wire/4-wire), 0-10V DC
Resolution	16-bit (ensures detection of micro-signal changes, e.g., 0.1°C temperature fluctuations)
Measurement Accuracy	- TC/RTD: ±0.1°C (typical at 25°C reference temperature)- 4-20mA/0-10V: ±0.05% of full scale
Isolation Performance	- Channel-to-channel: 1500V AC (1 minute)- Module-to-DCS backplane: 2500V AC (1 minute)
Power Supply	24VDC ±10% (typical power consumption: ≤5W)
Operating Temperature	-40°C to 70°C (suitable for petrochemical, power, and metallurgical harsh environments)