Dräger Polytron FX User Manual

8
Replacing the Sensor
• Insert the sensor wires through the threaded port in the housing.
• Screw the Dräger Sensor into the port. Five threads must be engaged
to ensure explosion-proof status.
• Plug the wires into the socket on the main PCB.
• Re-install sensor electronics by pushing the bezel and main PCB back into
place.
• Screw housing cover back onto the unit, being careful not to damage the
threads. The cover must be screwed on tightly to compress the o-ring to
maintain explosion-proof status.
• Apply power to the unit.
• Calibrate instrument per section 4.1, Calibration.
• Always test a newly-installed sensor with target gas to verify proper operation.
2.3 Change Gas Category of Polytron FX IR
See manual 9023843. This has to be done at the DraegerSensor IR.
Figure 5: Replacing the sensor
Housing Cover
Bezel
Main PCB
Plug wires into socket
on Main PCB
Threaded Port
Sensor Wires
DraegerSensor
PR or LC
Housing
DraegerSensor IR

Dräger Polytron FX Specifications

General

Brand	Dräger
Model	Polytron FX
Category	Gas Detectors
Language	English