RKI Instruments 65-2497RK - Manual (Page 8)

4 • 65-2494RK/65-2497RK Oxygen Detector
• Select a site where the target gas is likely to be found first.
NOTE: If your application does not require a specific mounting site, mount the detector
at approximately breathing level.
Figure 3: Outline & Mounting Dimensions, 65-2494RK & 65-2497RK
2. At the mounting site you select, hang or mount the junction box with the detector
facing down (see Figure 3).
Wiring the Oxygen Detector to a Controller
WARNING: Always verify that power to the controller is OFF before you make wiring
connections.
1. Turn off the controller.
2. Turn off or unplug power to the controller.
3. If the detector is mounted remotely from a controller using the junction box, proceed
to step 4.
If the detector is mounted directly to a controller, it is normally factory wired. Confirm
that the detector’s white and green wires are connected to the appropriate controller
detector terminals and skip to “Start Up” on page 6. See Figure 4, the controller
operator’s manual, and the controller’s detector head specification sheet for the
65-2494RK detector for the wiring connections.
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. Use appropriate conduit fittings and construction
.38
.75
3.10
Rubber
Spacers
3X
+
7.30 .25
3.65
3/4" NPT
3/4 NPT
Female
65-2494RK
1 1/2-20 Thread for
Calibration Cup
Ø 1.75 J-Box
1 1/2-20 Thread for Calibration Cup
65-2497RK
Oxygen Detector
6.80 Max
.75
1.32