Owner's manual

65-2322RKSS Oxygen Transmitter • 11
Wiring the Oxygen Transmitter to a Controller
WARNING: If the controller’s construction is not explosion-proof, the controller must be
installed in an ordinary location. Do non install a non-explosion-proof
controller in a classified location.
1. Turn off the controller.
2. Turn off power to the controller.
3. Remove the junction box cover.
4. The detector leads are factory wired. Verify that the detector leads are wired to the
amplifier’s detector terminal strip as shown in Figure 4.
5. To gain access to a plug-in terminal strip for wiring, pull it out of its socket by grasping the
terminal strip and pulling. The detector terminal strip is keyed so that the controller and
detector terminal strips cannot be reversed inadvertently.
WARNING: To maintain the explosion proof classification of the oxygen detector/junction
box combination, a conduit seal must be used within 2 inches (environment
with acetic acid) or 18 inches (environment without acetic acid) of the detector
junction box conduit hub used for wiring to the amplifier. Adhere to your local
electrical code when installing the conduit seal.
6. Guide either a two-conductor, shielded cable or two wires in conduit that is appropriate for
hazardous locations through the top conduit hub of the junction box.
7. Pull out the controller terminal strip, and connect the two wires to the terminal strip as
follows (see Figure 4).
• Connect the positive wire to the SIG/PWR “+” terminal.
• Connect the signal wire to the SIG/PWR “S” terminal.
CAUTION: If shielded cable is used, leave the cable shield’s drain wire disconnected and
insulated at the transmitter. You will connect the opposite end of the cable’s
drain wire to the controller’s chassis (earth) ground.
8. Reinstall the controller terminal strip into its socket.
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 housing.
CAUTION: Do not route power and transmitter wiring through the same controller conduit
hub. The power cable may disrupt the transmission of the transmitter signal to
the controller.