RKI Instruments 65-2504RK User Manual
Page 9
65-2504RK Oxygen Transmitter • 5
Wiring the Oxygen Transmitter to a Controller
WARNING: Always verify that the controller is off and power to the controller is off
before you make wiring connections.
1.
Turn off the controller.
2.
Turn off power to the controller.
3.
Remove the junction box cover.
4.
Verify that the detector leads are wired to the amplifier’s detector terminal strip. If
necessary, connect the leads to the detector terminal strip as shown in Figure 3.
5.
Verify that the jumper block is installed over the
OXYGEN
selector of the amplifier
type selector as shown in Figure 3.
6.
Install an appropriate cable bushing or conduit fitting on the top conduit hub of the
junction box.
7.
Guide a two-conductor, shielded cable or two wires in conduit through the top
conduit hub of the junction box.
8.
Connect the two wires to the interconnect terminal strip as follows (see Figure 3).
•
Connect the positive wire to the terminal labeled
24V +
.
•
Connect the feedback wire to the terminal labeled
4/20 FB
.
CAUTION:
Leave the cable drain (shield) wire insulated and disconnected at the transmitter. You
will connect the opposite end of the cable’s drain wire at the controller.
9.
Secure the junction box cover to the junction box.
10. Route the cable or wires leading from the oxygen transmitter through one of the
conduit hubs at the controller.
CAUTION:
Do not route power and transmitter wiring through the same conduit hub. The
power cable may disrupt the transmission of the transmitter signal to the
controller.