necessary to remove the front cover from the transmitter when connecting the voltage supply.
Connect the hot power conductor to the black wire and the neutral conductor to the white wire.
Refer to page 13 for further information.
Step 3 – Output Wiring
The transmitter conveys its sensor signal over two wires. Use a two-conductor shielded cable
for each transmitter in the system. As with the input power connections, color-coded wires exit
the transmitter housing through the top conduit fitting so removal of the front cover should not
be necessary. When using the analog output, the positive conductor connects to the red wire
and the reference conductor connects to the green wire. When using the digital output, the
positive conductor connects to the brown wire and the negative conductor connects to the blue
wire.
See figures 1 and 2 on page 16 for wiring diagrams.
Step 4 – Applying Power
Once you are sure that the wiring connections are correct, apply power to the transmitter
circuit. When power is first applied, the green power indicator will glow, indicating the
transmitter is active. The unit will begin transmitting its signal through the output immediately;
however, you should wait at least 2.5 minutes before taking any gas measurements as the
sensor will still be warming up.
See page 15 for more information concerning the initial startup.
At this point, the transmitter is now ready to monitor for the presence of the target gas.
IOM02
Rev 1.0 – December 22, 2020
11
