Model FP-524D
FP-524D Instruction Manual
Rev. 1.6
Page 4 of 39
Replacable Sensor
Main Housing
Threaded Insert
O-ring
Figure 7 LEL Sensor Housing with replaceable Sensor
NOTE: The Field Replaceable Combustible Gas Sensor housing is constructed from 316 Stainless Steel in
order to maximize corrosion resistance in harsh environments.
Base Connector PCB
The base connector board is mounted in the Junction Box. The connector board includes lug-less terminal
connections for incoming power and MA output, and connections for the Combustible Gas Replaceable
Sensor.
Customer
Wiring
Wiring to
LEL Sensor
Figure 8 Base Connector Board
