Hardware reference guide

Intrinsically Safe Modules
35013379 11/2011 403
Thermocouple/Millivolt Module Specifications
The following table shows the specifications for the Thermocouple/Millivolt module.
Input Filter > 100 dB @ 50/60 Hz
Isolation
Channel to Channel
Channel to Bus
None
1780 Vac @ 47-63 Hz or 2500 Vdc for 1 min.
Update Time (All Channels)
3-wire
2 or 4-wire
1.35 sec.
750 m sec.
Bus Current Required 400 mA
Power Dissipation 2 W
External Power Not required for this module
Fault Detection Out of range or broken wire conditions
Hot Swap Not allowed per intrinsic safety standards
Fusing Internal-not user accessible
Programming Software Modsoft Ver. 2.61 or higher
RTD/Resistance Module Specifications
Thermocouple/Millivolt Module Specifications
Number of Channels 8
LEDs Active (Green)
F (Red)
1 ... 8 (Red). Indicated channel is out of range -
Broken wire condition is detected.
TC Types and Ranges
Types J K E T S R B Ranges (° C) -210 ... +760
-270 ... +1370
-270 ... +1000
-270 ... +400
-50 ... +1665
-50 ... +1665
+130 ... +1820
Millivolt Ranges -100 mV ... +100 mV*
-25 mV ... +25 mV*
*Open circuit detect can be disabled on these
ranges
TC Circuit Resistance/Max Source
Resistance
200Ω max for rated accuracy
Input Impedance >1MΩ