3M™ PROTÉGÉ PLUS
PORTABLE MULTI-GAS MONITOR
MAINTENANCE
8006569, Rev. C/June 2018
7-8
5. Insert the replacement sensor using the Alignment System.
Figure 7-7: Sensor Positions
6. Reinstall the sensor cover with four (4) M2.5 × 20 screws and tighten the screws with the
sequence shown in Figure 7-8:.
NOTE: Each sensor has a small PCB tab that extends beyond its diameter, ensure the tabs
align with the small slots of sensor cavities.
1
2
3
Position 1= E-Chem
Position 2= E-Chem & Dual Gas E-Chem
Position 3= E-Chem, LEL Cat-Bead (standard) &
LEL Cat-Bead (low power)
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