RKI Instruments 65-2301RK - Manual (Page 10)

6 • 65-2300RK/65-2301RK Toxic Detector
and black wires to the appropriate controller detector terminals (see Figure 4 for the
color coding of the non-black wire) and skip to the Startup Section.
4. Remove the junction box cover.
5. Guide a two-conductor, shielded cable or two wires in conduit through the unused
conduit hub of the junction box.
6. Connect the two wires to the detector using the terminal block.
CAUTION: If using shielded cable, leave the drain wire insulated and disconnected at the
detector. You will connect the opposite end of the cable’s drain wire at the controller.
7. Secure the junction box cover to the junction box.
8. Route the cable or wires leading from the toxic detector through one of the conduit
hubs at the controller housing. Use appropriate conduit fittings and construction
technique for the environmental rating of the controller. RKI controllers are typically
rated NEMA 4X.
CAUTION: Do not route power and detector wiring through the same conduit hub. The power
cable may disrupt the transmission of the detector signal to the controller.
9. Connect the wires to the applicable controller terminal strip. See the controller
operator’s manual and the controller’s detector head specification sheet for the 65-
2300RK or 65-2301RK detector.
Figure 4: Wiring the Toxic Detector to a Controller
10. If using shielded cable, connect the cable’s drain wire to an available chassis ground at
the controller. RKI controllers typically have a ground stud that is a convenient
grounding location.
Shielded Cable
(+) See Table
AsH3 brown
CL2 yellow
CL-10 yellow
HCN white
NH3 red
PH3
green
SO2 blue
Gas Type Table
Controller Detector Terminals,
Typical Designations
Controller Housing
+
S
Terminal Strip
Black (S)
ESM-01 Detector
0 - 3 ppm Cl2
0 - 10 ppm Cl2
Gas Type + Wire