Rockwell Automation 1797-IRT8 FLEX Ex Thermocouple/RTD Module - Manual (Page 12)

12 FLEX Ex Thermocouple/RTD Input Module
Publication 1797-5.4 - June 2010
Example of Millivolt Wiring to a 1797-TB3 Terminal Base Unit
Grounding
All I/O wiring must use shielded wire. Shields must be terminated external to
the module, such as bus bars and shield-terminating feed throughs.
0 to 15
16 to 33
34 to 51
A
B
C
Millivolt
Source
Millivolt
Source
Millivolt
Source
Millivolt
Source
+ -
+ -
+ -
-
+
-
-
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16
34
Attention: Keep exposed area of inner conductor as short as possible. 40622gm
Bus Bar Ground
or Shield
Terminating
Feedthrough
30820-M