Beacon 800 Gas Monitor Operator’s Manual Wiring the Beacon 800 Gas Monitor • 16
Connecting RKI Detector Heads
Perform the following procedure to connect an RKI detector head to the Beacon 800.
1. Turn off Power to the Beacon 800 at the power source.
2. Open the Beacon 800 door and place the power switch in the off position.
3. See the detector head instruction manual for instructions on how to connect wires to
the detector head.
4. Install an appropriately rated cable bushing or conduit in an unused conduit hub on
the bottom of the Beacon 800 housing.
CAUTION: Only use the four factory installed conduit hubs on the bottom of the housing
for wire entry into the housing. Do not drill the housing for any reason. See
“Routing Wiring Into the Beacon 800 Housing” on page 12 for more
information.
5. Route the wires in conduit or shielded cable from the detector head through the
selected conduit hub into the Beacon 800. See Table 4 below for wire size and
distance guidelines. Shielded cable or wires in conduit are recommended for the 2-
wire and 3-wire 4 - 20 mA transmitter detector heads.
NOTE: If using shielded cable, do not connect the cable shield’s drain wire to earth
ground at the detector head. The drain wire is only connected to earth ground at
the Beacon 800.
6. Connect the wires from the detector head to the appropriate transmitter terminal strip.
See the detector head instruction manual for controller terminal connections.
CAUTION: Do not route power and detector head wiring through the same conduit hub.
The power wiring may disrupt the transmission of the detector head’s signal
to the Beacon 800.
Table 4: Wire Size Guidelines for RKI Detector Head Wiring
Detector Head Type
Number of
Wires to
Controller
Max Distance to
Controller w/18
Gauge Wire
Max Distance to
Controller w/16
Gauge Wire
Max Distance to
Controller w/14
Gauge Wire
2-Wire 4 - 20 mA Transmitter 2 2,500 ft. 5,000 ft. 8,000 ft.
3-Wire 4 - 20 mA Transmitter 3 2,500 ft. 5,000 ft. 8,000 ft.
To Next Page
Loading...