RKI Instruments Beacon 200 Rig Monitor, LEL/LEL User Manual
Page 12
7 • Beacon 200 Rig Monitor Operator’s Manual
mount the junction box. The junction box protects the detector wiring
connections. 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 perform a calibration. A cover on the front of the
junction box allows access to the interior of the junction box.
The combustible gas detector is a catalytic type detector that produces an
electrical output that corresponds to the detection range. It is packaged in a
1/2 inch NPT nipple with a sintered metal flame arrestor on one end
allowing ambient air to diffuse into the detector. The flame arrestor also
contains any sparks which may occur within the detector. The calibration
cup is screwed onto the bottom of the detector.
12 VDC Battery Cable
A 50 foot cable with clamps for connection to a 12 VDC battery (customer
supplied battery not included) is factory-wired through the right cable
bushing of the Beacon 200. One end of the cable is connected to the DC In
terminal strip.