RKI Instruments 65-2400RK-05 User Manual
Page 6
Combustilbe Gas Transmitter • 6
the bottom conduit hub of the junction box.
4.
Screw the combustible gas detector into the bottom conduit hub of the junction box.
5.
At the monitoring site, use 1/4 in.
screws through the junction box’s two mounting
holes to secure the junction box to a vertical surface.
CAUTION:
Mount the combustible gas transmitter with the detector facing down (see Figure 2.)
Wiring the Combustible Gas Transmitter to a Controller
WARNING: Always verify that all power is OFF before you make wiring connections.
1.
Remove the junction box cover.
2.
Verify that the detector leads are wired to the amplifier’s interconnect terminal strip.
If necessary, connect the detector leads to the interconnect terminal strip as shown in
Figure 3.
3.
Guide a three-conductor, shielded cable in conduit or three wires in conduit through
the top conduit hub of the junction box.
WARNING: To maintain the explosion proof classificaition of the LEL detector/
junction box combination, a conduit seal must be used at the junction box
conduit hub used for wiring to the controller.
4.
Connect the three wires to the interconnect terminal strip as follows (see Figure 3.)
•
Connect the positive wire to the terminal labeled
24V +
.
•
Connect the feedback wire to the terminal labeled
4/20 FB
.
•
Connect the negative wire to the terminal labeled
GND
.
CAUTION:
Leave the drain wire insulated and disconnected at the transmitter. You will connect
the opposite end of the cable’s drain wire at the controller.
5.
Secure the junction box cover to the junction box.
6.
Route the cable or wires leading from the combustible gas transmitter through a
conduit hub at the controller.
CAUTION:
Do not route power and transmitter wiring through the same conduit hub. The
power cable may disrupt the transmission of the transmitter signal to the controller.
7.
Connect the wires to the appropriate terminals at the controller. Figure 3 shows
generic connections. See the controller instruction manual for specific wiring
connections.