FBM203

Basic Information

Model: FBM203

Manufacturer: Foxboro / Schneider Electric

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

Type: 8-Channel Isolated RTD (Resistance Temperature Detector) Input Module

Status: Active / Available

Part Number: P0914GR / P0926EQ

Variants

FBM203: Standard 8-channel RTD (Pt/Ni), 2/3-wire, 0–320 Ω

FBM203B: 8-channel RTD (Pt/Ni), 2/3-wire, 0–640 Ω

FBM203C: 8-channel Copper RTD, 2/3-wire, 0–30 Ω

FBM203D: 8-channel RTD (Pt/Ni), 4-wire, 0–320 Ω

Key Features

8-channel isolated RTD input for precision temperature measurement

Sigma-delta ADC per channel, 25 ms update rate

Configurable digital filtering for noise reduction

High input impedance minimizes sensor loading

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 RTD sensors (Pt100, Pt1000)

Process temperature control in chemical, petrochemical, power, oil & gas, and water treatment industries

High-accuracy thermal measurement requiring 2/3/4-wire RTD connectivity

Specifications

Channel & Input

Channels: 8 isolated, independent RTD input channels

Sensor Types: Platinum (Pt100/Pt1000), Nickel RTDs (2-wire or 3-wire)

Resistance Range: 0–320 Ω (320 Ω = 64000 counts)

Sensor Current: 0.19 mA DC (nominal)

Lead Resistance: Max 50 Ω per lead

Resolution: 16-bit ADC

Accuracy: ±0.03% of span

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)