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3.4 Sensor Input Connections
The RTD sensor (see
Figure 3-5
), can be wired in three
different ways. They are 2-, 3-, and 4-wire configurations. The
meter is factory set internally to a 3-wire setup. If you wish to
change it, refer to
Table 3-2
.
2-Wire RTD:
Externally wire the P3 connector according to
Figure 3-6
.
Keep in mind that you will need to jumper pins 1 and 2 on P3
together, and jumper pins 3 and 4 on P3 together. Use 24 AWG
wire. The black lead goes to Pin 1 or 2 and the red lead goes to
Pin 3 or 4.
3-Wire RTD:
Externally wire the P3 connector according to
Figure 3-7
. Pin
4 on the P3 connector is not used.
4-Wire RTD:
Externally wire the P3 connector according to
Figure 3-8
.
Figure 3-5. RTD P3 Connector
See
Figure 2-2
for the location of the P3 connector.
1
2
Screws
underneath
3
4
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