64171, Rev. 10/May 2019
3M™ GMI™ PS200 PORTABLE GAS MONITOR
OPERATING PARAMETERS & SENSOR TYPES
A-2
A.2. LEL Sensor Types
There are several LEL sensor types available for the monitor. The following table shows the benefits
of each sensor and the combustible gases it will detect:
LEL Sensor
Benefit
Gas Detected
Certification
Gas Group
Division/Zone
Standard Filtered
P/N: 66725
Detects most combusti-
ble gases
C1 - C8 Hydrocarbons
Includes but not limited to:
Methane, Ethane, Pro-
pane, Butane, Pentane,
Hexane, Heptane, Octane
& Hydrogen
IIC
A,B,C & D
Class I, Div 1,2
Zones 1,2
Enhanced Filtered
P/N: 64825
Enhanced H2S and Sili-
cone poisoning resistance
C1 - C6 Hydrocarbons
Includes but not limited to:
Methane, Ethane, Pro-
pane, Butane, Pentane,
Hexane & Hydrogen
IIC
A,B,C & D
Class I, Div 1,2
Zones 1,2
Low Power
P/N: 66750
Improved battery life
C1 - C5 Hydrocarbons
Includes but not limited to:
Methane, Ethane, Pro-
pane, Butane, Pentane
IIB
C & D
Class I, Div 1,2
Zones 0,1,2
Infrared P/N: 66761
Improved
battery life,
poison/silicone/contami-
nation resistant,
Able to detect methane in
oxygen depleted atmo-
spheres
Methane only
Will not detect Hydrogen
(H
2
)
IIC
ATEX/IECEx
only
Zone 1
ATEX/IECEx
only
WARNING: ONLY THE STANDARD FILTERED AND THE ENHANCED FILTERED
SENSORS ARE INTERCHANGABLE.