Overview

Foxboro FBM202 P0916AC is a thermocouple/mV input module with eight isolated input channels and one reference junction temperature compensation channel, providing precise measurements for various thermocouple types.

Input Specifications

• Input Channels: 8 isolated, independent thermocouple/mV channels
• Input Range: –10.5 to +69.5 mV DC
• Reference Junction: 4-wire 100 ohm platinum RTD for temperature compensation
• Accuracy:
  • mV Input: ±0.03% of span (±27 µV) at 25°C
  • RTD Channel: ±0.03% of span
  • Thermocouple Conformity: ±0.25°C
  • RTD Reference Junction Conformity: ±0.25°C
  • Accuracy Temperature Coefficient: ±50 ppm/°C
  • RTD Measurement Accuracy: ±0.50°C (with Foxboro termination assembly)
• Differential Input Impedance: 10 MΩ
• Common Mode Voltage: Up to 30 V AC or 60 V DC
• Integration Period: Software configurable
• Input Open Circuit Voltage: 250 mV DC through 10 MΩ (mV channels)
• A/D Conversion: Independent Sigma-Delta converters for each channel
• Typical Thermocouple Types: B, E, J, K, N, R, S, T, and others
• Burnout Detection: Full upscale value
• Input Isolation: Galvanically isolated, withstands 600 V AC for 1 minute

Communication

• Interface: Communicates via 2Mbps Fieldbus with associated FCM or FCP

Power

• Input Voltage Range (Redundant): 24 V DC, +5%, -10%
• Consumption: 3 W (maximum)
• Heat Dissipation: 3 W (maximum)

Environmental

• Operating Temperature:
  • Module: -20 to +70°C (-4 to +158°F)
  • Termination Assembly (PVC): -20 to +50°C (-4 to +122°F)
  • Termination Assembly (PA, PC/ABS): -20 to +70°C (-4 to +158°F)
• Humidity: 5 to 95% (non-condensing)
• Altitude: -300 to +3,000 m (-1,000 to +10,000 ft)
• Storage Temperature: -40 to +70°C (-40 to +158°F)
• Storage Altitude: -300 to +12,000 m (-1,000 to +40,000 ft)
• Contamination: Suitable for Class G3 (Harsh) environments
• Vibration: 0.75 m/s² (5 to 500 Hz)

Physical

• Weight:
  • Module: 284 g (10 oz)
  • Compression Termination Assembly (DIN Rail Mounted): 159 g (0.35 lb)
  • Compression Termination Assembly (Baseplate Mounted): 245 g (0.57 lb)
  • Ring Lug Termination Assembly: 204 g (0.45 lb)
• Dimensions (Module):
  • Height: 102 mm (4 in), 114 mm (4.5 in including mounting lugs)
  • Width: 45 mm (1.75 in)
  • Depth: 104 mm (4.11 in)

Cables

• Cable Lengths: Up to 30 m (98 ft)
• Cable Materials: Polyurethane or Low Smoke Zero Halogen (LSZH)
• Cable Type: Type 2
• Connections:
  • FBM Baseplate End: 37-pin D-subminiature
  • Termination Assembly End: 25-pin D-subminiature

Construction

• Termination Assembly Materials:
  • DIN Rail Mounted: PVC, PA (compression and ring lug)
  • Baseplate Mounted: PC/ABS (compression)
• Field Termination Connections:
  • Compression: 0.2 to 4 mm²/24 to 12 AWG
  • Ring Lug: #6 size connectors (0.375 in), 0.5 to 4 mm²/22 AWG to 12 AWG