RKI Instruments Beacon 100 - Manual (Page 15)

Beacon 100 Gas Monitor Operator’s Manual Wiring the Beacon 100 Gas Monitor • 15
Connecting External Alarms
Perform the following procedure to connect external alarms to the Beacon 100.
1. Open the housing door, and locate the external alarms terminal strip. See Figure 1,
Beacon 100 Gas Monitor Component Location on page 7, to assist you in locating the
external alarms terminal strip.
2. Guide the wiring of the external alarm through one of the conduit hubs on the bottom
of the Beacon 100 housing.
CAUTION: Do not route the external alarm wiring and detector wiring through the same
conduit hub. The external alarm wiring may disrupt the transmission of the detector
signal to the Beacon 100
3. Connect the leads from the external alarm to the appropriate terminals on the external
alarm terminal strip. See Figure 3 for reference.
4. Repeat steps 2 and 3 for additional external alarms.
Connecting Recorders
Perform the following procedure to connect a recording device to the Beacon 100. The
output at the analog output terminal strip is a 4 - 20 mA signal that is proportional to the
detection range of the applicable detector.
1. Open the housing door, and locate the analog output terminal strip. See Figure 1,
Beacon 100 Gas Monitor Component Location, to assist you in locating the recorder
output terminal strip.
2. Guide the wiring from the recording device through one of the conduit hubs on the
bottom of the Beacon 100 housing.
3. Connect the leads from the recording device to the analog output terminal strip as
shown in Figure 3.
Connecting RKI Detector Heads
See the detector head operator’s manual and the detector head Beacon 100 Specification
Sheet to wire a detector head supplied by RKI Instruments, Inc. to the Beacon 100.
Connecting User-Supplied 4 to 20 mA Transmitters
Perform the following procedure to connect a 4 to 20 mA transmitter (that you supply) to
the Beacon 100.
1. Open the housing door, and locate the 1, 2, and 4 (+24V, FB, and - detector terminals
respectively) terminals on the detector terminal strip. Route the cable leading from the
transmitter through one of the conduit hubs on the bottom of the Beacon 100 housing.
2. Connect the wires from the transmitter to the detector terminal strip as follows:
• For a 2-wire transmitter connect the + wire to terminal 1 (+) and the feedback wire
(-) to terminal 2 (FB).
• For a 3-wire transmitter connect the + wire to terminal 1 (+), the - wire to terminal
4 (-), and the feedback wire to terminal 2 (FB).