Table of Contents
Advertisement
1
2
3
+
4
5
2-7 RTD Input Wiring
RTD connection are shown in Figure 2-6, with the compensating
lead connected to terminal 4. For two-wire RTD inputs, terminals 4
and 5 should be linked. The three-wire RTD offers the capability of
lead resistance compensation provided that the three leads are of
same gauge and equal length.
Two-wire RTD should be avoided, if possible, for the purpose of
accuracy. A 0.4 ohm lead resistance of a two-wire RTD will produce
1 degree C temperature error.
1
2
RTD
3
4
5
Three-wire RTD
6
7
8
9
Figure 2.5
10
Thermocouple Input Wiring
6
7
RTD
8
9
10
Two-wire RTD
Figure 2-6
RTD Input Wiring
UM0L911C
1
2
3
4
5
6
7
8
9
10
27
Advertisement
Table of Contents
