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 (–10.5 to +69.5 mV dc equals 0 to 64000 raw counts. Input of 71.419 mV equals 65535 raw counts (full range of module))
Reference Junction
Reference junction temperature compensation is 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)
Input Signal A/D Conversion
Each channel performs A/D signal conversion using an independent Sigma-Delta converter.
Typical Thermocouple Types
B, E, J, K, N, R, S, T and other millivolt signals
Thermocouple Burnout Detection
Full upscale value
Input Channel Isolation
Each channel is galvanically isolated from all other channels and earth (ground). The module withstands, without damage, a potential of 600 V ac applied for one minute between any channel and ground, or between a given channel and any other channel.
CAUTION
This does not imply that these channels are intended for permanent connection to
hazardous voltage circuits. Connection of these channels to voltages greater than
30 V ac or 60 V dc violates electrical safety code requirements and may expose users to
electric shock.
Communication
Communicates with its associated FCM or FCP via the redundant 2Mbps module Fieldbus.
Power Requirements
INPUT VOLTAGE RANGE (REDUNDANT) : 24 V dc, +5%, -10%
CONSUMPTION : 3 W (maximum)
HEAT DISSIPATION : 3 W (maximum)
Calibration Requirements
Calibration of the module and termination assembly is not required.
Industrial Immunity Levels
RoHS COMPLIANCE
Complies with European RoHS Directive
2011/65/EU