RTD connection are shown in Figure 2-6, with the compensating lead
connected to terminal 19. For two-wire RTD inputs, terminals 19 and 20 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.
2-7 RTD Input Wiring
2-7 RTD Input Wiring
Two-wire RTD should be avoided, if possible, for the purpose of accuracy.
+/- 0.4 ohm lead resistance of a two-wire RTD will produce 1 degree C
temperature error.
11
22
33
44
O
N
O
N
DIP Switch
DIP Switch
Three-wire RTD
Three-wire RTD
RTD
RTD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Two-wire RTD
Two-wire RTD
RTD
RTD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Figure 2-6
RTD Input Wiring
Figure 2-6
RTD Input Wiring
26
UM L41-Rev 2
Summary of Contents for LIMIT L41
Page 1: ...R R RoHS RoHS...
Page 38: ...Examples Examples 38 UM L41 Rev 2 SP2 200 AL MD NORM Examples Examples AL HY 10 0 AL FN PV H A...
Page 42: ...Chapter 5 Calibration Chapter 5 Calibration 42 UM L41 Rev 2...
Page 50: ...Table 5 1 Input Characteristics Table 5 1 Input Characteristics 50 UM L41 Rev 2...
Page 51: ...51 UM L41 Rev 2...