Foxboro I/A Series FBM202 P0916AC Thermocouple/mV Input Module

OVERVIEW:

The FBM202 Thermocouple/mV Input contains eight thermocouple input channels, and one isolated RTD reference junction compensation channel (for terminal temperature sensing). Each thermocouple/mV channel accepts standard thermocouples for various temperature ranges, and each provides thermocouple burnout detection (up-scale). The inputs are galvanically isolated from other channels and ground.

FUNCTIONAL SPECIFICATIONS:

• Input Channels:

  • Eight isolated and independent thermocouple/mV input channels.
  • One isolated reference junction temperature compensation channel.

• Input Range:

  • –10.5 to +69.5 mV dc (0 to 64000 raw counts).
  • Input of 71.419 mV equals 65535 raw counts (full range of module).

• Reference Junction:

  • Reference junction temperature compensation provided by a 4-wire 100 ohm platinum RTD (IEC 751, Class B) at the termination assembly.

• Accuracy:

  • Millivolt Input:
    • ±0.03% of span (±24 µV) at 25°C
  • RTD Channel:
    • ±0.03% of span
  • RTD Reference Junction Conformity:
    • ±0.25°C
  • Thermocouple Conformity:
    • ±0.25°C
  • Accuracy Temperature Coefficient:
    • ±50 ppm/°C
  • RTD Reference Junction Measurement Accuracy:
    • ±0.50°C (When using the RTD internal to the Foxboro supplied termination assemblies)

• 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 M ohms (mV channels)

• Power Requirements:

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

• Weight (Cont.) - Termination Assemblies:

  • Compression (Approximate):
    • For DIN Rail Mounted TAs: 159 g (0.35 lb)
    • For Baseplate Mounted TAs: 245 g (0.57 lb)
  • Ring Lug: 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)