RKI Instruments Beacon 110 - Page 21

Beacon 110 Operator’s Manual 17
Connecting Recorders
Perform the following procedure to connect an analog signal recording device to the
Beacon 110. The output at the recorder output terminals is a 4 - 20 mA signal that is
proportional to the detection range of the detector head connected to the Beacon 110.
1. Turn off or unplug incoming power to the Beacon 110.
2. Open the housing door, and locate the recorder output terminals on the controller
terminal strip. See Figure 1 “Beacon 110 Component Location” on page 4 to assist
you in locating the recorder output terminals. They are labelled 4 - 20 mA OUTPUT +
and 4 - 20 mA OUTPUT -.
3. Place the power switch in the off position.
CAUTION: The power switch does not control DC input power.
4. Install an appropriately rated cable bushing or conduit in the left conduit hub on the
bottom of the Beacon 110 housing. This hub is typically used for power wiring and
may already have conduit or other fittings installed because of this.
CAUTION: Only use the two 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 110 Housing” on page 13 for
more information.
5. Guide the wiring from the recording device through the left conduit hub on the bottom
of the Beacon 110 housing.
6. Connect the leads from the recording device to the analog output terminal strip as
shown in Figure 10 below.
Figure 10: Recorder Output Wiring
Connecting RKI Detector Heads
Perform the following procedure to connect an RKI detector head to the Beacon 110.
1. Turn off or unplug power to the Beacon 110.
2. Open the Beacon 110 door and place the power switch in the off position.
3. See the detector head operator’s manual for instructions on how to connect the
detector head to a controller.
4-20 mA
OUTPUT
Recording Device,
500 Ohms Max
Impedance