Rockwell Automation 1746-NT4 Series B,D17466.6.1 SLC 500 4-Channel Thermocouple/mV Input Module User Manual - Manual (Page 13)

1 Publication 1746-UM007C-EN-P - July 2004
Chapter
1
Overview
This chapter describes the thermocouple/millivolt module and
explains how the SLC controller gathers thermocouple or millivolt
initiated analog input from the module. This chapter includes:
•
General Description
•
System Overview
General Description The thermocouple/mV module receives and stores digitally converted
thermocouple and/or millivolt (mV) analog data into its image table
for retrieval by all fixed and modular SLC 500 processors. The module
supports connections from any combination of up to four
thermocouple or mV analog sensors.
The following tables define thermocouple types and their associated
full scale temperature ranges and also list the millivolt analog input
signal ranges that each 1746-NT4 channel will support. To determine
the practical temperature range your thermocouple supports, refer to
the specifications in Appendix A.
Each input channel is individually configurable for a specific input
device and provides open-circuit, over-range, and under-range
detection and indication.
Type °C Temperature Range °F Temperature Range
J -210° to 760° -346° to 1400°
K -270° to 1370° -454° to 2498°
T -270° to 400° -454° to 752°
B 300° to 1820° 572° to 3308°
E -270° to 1000° -454° to 1832°
R 0° to 1768° 32° to 3214°
S 0° to 1768° 32° to 3214°
N 0° to 1300° 32° to 2372°
CJC Sensor 0° to 85° 32° to 185°
Millivolt Input Type Range
±50 mV -50 mV dc to +50 mV dc
±100 mV -100 mV dc to +100 mV dc