Foxboro FBM202 P0926EQ Thermocouple/mV Input Module

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. The module performs the signal conversion required to interface the electrical input signals from the field sensors to the optionally redundant Fieldbus. It executes an Analog Input application program, which provides integration time and Rate of Change Limits configurable options.

Input Channels：Eight isolated and independent thermocouple/mV input channels

Input Range：–10.5 to +69.5 mV DC (equivalent to 0–64,000 raw counts)

Reference Junction：Compensation provided by 4-wire 100 Ω platinum RTD (IEC 751, Class B) at termination assembly

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 (using Foxboro supplied termination assemblies)