24 • Wiring the Beacon 200 Gas Monitor
5. Connect the wires from the recording device to the recorder output
terminals as shown in Figure 9.
Connecting RKI Detector Heads
The detector/transmitter terminals will accept 24 - 14 AWG wire. Select
wire that is rated to a minimum of 80°C, 0.75 A, and 150V.
Perform the following procedure to connect an RKI detector head to the
Beacon 200.
1. Turn off or disconnect mains power to the Beacon 200.
2. Open the Beacon 200 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 200 housing.
5. Route the wires in conduit or shielded cable from the detector head
through the selected conduit hub into the Beacon 200. See Table 5
below for wire size and distance guidelines.
Unshielded twisted pair cable in conduit or shielded twisted pair cable
is recommended for all the direct connect detector heads. For the LEL
detector, pair the R & B wires and the W & G wires. Shielded cable or
wires in conduit are recommended for the 2-wire and 3-wire 4 - 20 mA
transmitters.
6. Connect the wires from the detector head to the appropriate detector/
transmitter terminals. The top detector terminal strip is for channel 1
and the bottom one is for channel 2. See the detector head instruction
manual for controller terminal connections.
+
CH2
OUT
+
CH1
OUT
+
Recording Device
#2, 1Kohm Max
Impedance
Recording Device
#1, 1Kohm Max
Impedance
+
Figure 9. Recorder Output Wiring
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