Rockwell Automation 61C544A RTD Module - Manual (Page 12)

2Ć4
RTD MODULE
CONSTANT CURRENT
SOURCE
RTD MODULE
MEASUREMENT INPUTS
REF
3K W
220KW
DIFF.
MUX
A/D
INSTR.
AMP.
0.1 m F
220KW
0.1 m F
I O
I
R
0.1 m F
1K W
3.9K W
RTD V+
V-
+
-
+
-
Figure2.2 - Typical RTD Channel