RAEGuard
S
EC / LEL / IR User’s Guide
Electrical Wiring
1. Inside the housing bottom, unplug the two green terminal block
plugs from the terminal block on the PC boards.
Note
: The
terminal block plugs accept 12 AWG to 24 AWG wire.
2. Lace the wires through the RAEGuard
S
EC’s wire hole(s) and
connect wires to the corresponding pin numbers of the terminal
blocks:
Terminal Wire Pin#
Alarm Common (COM)
1
High/Low Alarm (ALM1)
2
Fault Alarm (ALM2)
3
RS485A (485A)
4
Block 1
RS485B (485B)
5
4-20 mA Output (4-20mA)
6
Power Supply - Output Common (P-)
7
Block 2
Power (9 to 36VDC) (P+)
8
Instrument Assembly Installation
1. Plug all terminal block plugs into the correct terminal block headers.
Keep the extra wires as close to the inside enclosure wall as possible.
2. Screw the sensor module to the housing and plug the 8-pin (EC) or 10-
pin (LEL model) or 12-pin (IR model) connector back into its socket.
3. Plug the 16-pin (EC or LEL model) or 20-pin (IR model) connector back
into its socket.
4. Pull off the clip to place the instrument assembly back into the housing
bottom.
5. Tightly screw the housing top to the housing bottom.
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