Wiring the gd-k8a to a controller – RKI Instruments GD-K8A User Manual
Page 10
6 • Model GD-K8A Diffusion Detector Head
2.
Use three #10 screws through the mounting holes in the mounting flanges at the top
and bottom of the housing to mount the GD-K8A to a vertical surface (see Figure 3).
Wiring the GD-K8A to a Controller
WARNING: Always verify that the power source is off before making wiring
connections or adjustments.
1.
Place the controllers power switch in the off position.
2.
Turn off power to the controller.
3.
Guide a two conductor shielded cable through the cable bushing at the bottom of the
GD-K8A.
CAUTION:
Leave the cable shield’s drain wire insulated and disconnected at the GD-K8A. You
will connect the opposite end of the cable shield’s drain wire at the controller.
4.
Connect the two wires between the GD-K8A and the controller as shown in Figure 4
below.
CAUTION:
At the controller, do not route power and GD-K8A wiring through the same conduit
hub. The power cable may disrupt the transmission of the GD-K8A’s signal to the
controller.
NOTE:
The controller connections shown are typical. See the controller Detector Head
Specification Sheet for the GD-K8A or a controller specific wiring diagram for the
GD-K8A for connections specific to the controller.
Figure 4: Wiring the GD-K8A to a Controller
Controller
4-20 mA In (FB)
+ 24 VDC
Shield
4-20 mA Out