FBM202

Basic Information

Model: FBM202

Manufacturer: Foxboro / Schneider Electric

System: I/A Series DCS, Compact I/O Subsystem

Type: 8-Channel Isolated Thermocouple / Millivolt Input Module

Status: Active / Available

Part Number: P0926EQ / RH926EQ

Specifications

Channel & Input

Channels: 8 isolated thermocouple/mV input channels + 1 isolated RTD cold-junction compensation channel

Input Signal: -10.5 ~ +69.5 mV DC

Thermocouple Types: B, E, J, K, N, R, S, T

Resolution: 16-bit ADC

Accuracy: ±0.03% of span (±27 μV); Cold-junction: ±0.50°C at 25°C

Input Impedance: 10 MΩ (differential)

Isolation: Channel-to-channel & channel-to-ground galvanic isolation; 600V AC for 1 minute

Communication & Power

Fieldbus: Redundant 2 Mbps module fieldbus (to FCM/FCP)

Power Supply: 24 VDC ±5% / -10% (redundant)

Power Consumption: 3W typical, 5W max

Environmental & Mechanical

Operating Temp: -20°C to +70°C

Storage Temp: -40°C to +85°C

Humidity: 5%–95% (non-condensing)

Vibration: 0.75 g (5–500 Hz)

Rating: ISA S71.04 Class G3

Dimensions (L×W×H): 104 mm × 25 mm × 130 mm

Weight: 0.32 kg

Mounting: Standard I/A Series compact baseplate

Hot Swappable: Yes (redundant config)

Key Features

8-channel isolated thermocouple/mV input, with dedicated RTD cold-junction compensation (±0.3°C accuracy 0–60°C)

Sigma-delta ADC per channel, 25 ms update rate (configurable integration for noise rejection)

Thermocouple burnout detection (open-circuit monitoring)

High common-mode voltage tolerance (30V AC / 60V DC)

Redundant fieldbus for high reliability

Onboard LED status indicators and comprehensive self-diagnostics

Robust aluminum enclosure for harsh industrial environments

Application

Precision temperature monitoring using thermocouples in process industries

Low-level millivolt signal acquisition from sensors and transducers

Chemical, petrochemical, power, oil & gas, and water treatment industries