RKI Instruments 65-2427RK-05 - Manual (Page 8)

4 • 65-2427RK-05 H
2
S Detector
Junction Box
The junction box allows you to install the detector at a mounting site that is remote from a
controller, and it protects the detector wiring connections. Two conduit hubs allow you to
mount the detector to the junction box and connect the wiring from the detector to a
controller. Three spacers installed on the back of the junction box control the distance of
the junction box from a mounting surface and ensure that there is enough room to install a
calibration cup on the detector during calibration. The terminal block within the junction
box facilitates the wiring process. A cover on the front of the junction box allows access to
the interior of the junction box.
Installation
This section describes procedures to mount the H
2
S detector in the monitoring
environment and wire the detector to a controller.
Mounting the H
2
S Detector
1. Select a mounting site that is representative of the monitoring environment. Consider
the following when you select the mounting site.
• Select a site where the detector is not likely to be bumped or disturbed. Make sure
there is sufficient room to perform start-up, maintenance, and calibration
procedures.
• 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.