Sierra Monitor Corporation 4501-05 - Manual (Page 12)

Model 4501-XX Toxic Gas Sensor Module
Page 8 of 35
4.4 TRANSMITTER AND SENSOR INSTALLATION
When all pre-wiring is complete:
1. Install sensor assembly in the open hub on the module enclosure. The sensor assembly thread
must be fully seated into the hub and tightened to maintain explosion proof assembly.
2. Connect the sensor assembly cable to transmitter connector J1. (Figure 4-3)
3. Connect the loop wires (Loop + and Loop -) to transmitter connector P1 4-20 mA + and –
(Figure 4-3).
NOTE
Conductor P1 is removable
4. Carefully return the transmitter to the enclosure installing it over the two standoffs. Finger tighten
the retaining screws into the standoffs.
Figure 4 - 3: Connector Locations
Loop Power
Sensor
Connector