RKI Instruments Eclipse - Manual (Page 6)

6 Eclipse Detector Head Operator’s Manual
in the upper right of the display.
If the Eclipse is installed in an area with no significant background light, use a
portable lantern or flashlight to provide a steady background light level.
Junction Box
Use the junction box to install the Eclipse detector head at a mounting site. The junction
box also protects the Eclipse and all connections made to it. Use the two 3/4 in. conduit
hubs to mount the detector to the junction box (bottom hub) and connect wiring from an
external device.
NOTE: The gas detector and amplifier set are factory-mounted in the junction box.
Use the junction box’s two mounting holes to mount the Eclipse to a vertical surface at the
monitoring site. The window in the cover on the front of the junction box allows you to
cover the optical switch in patterns to perform calibration. Removing the cover allows you
to access the interior of the junction box.
Installation
This section describes procedures to mount the Eclipse Detector Head in the monitoring
environment and wire it to input power and devices.
Mounting the Eclipse Detector Head
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 Eclipse 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. For lighter gases,
mount the detector near the ceiling; for heavier gases, mount the detector near the
floor.
2. At the monitoring site, use #10 screws through the junction box’s two mounting holes
to secure the junction box to a vertical surface. Figures 2-5 show the outline and
mounting dimensions for each of the Eclipse detector heads.
CAUTION: Mount the Eclipse with the detector facing down.