
PS200
PORTABLE GAS MONITOR
42
64171
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
combustible gases
C1 - C8 Hydrocarbons
Includes but not limited
to:
Methane, Ethane,
Propane, 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 &
Silicone poisoning
resistance
C1 - C6 Hydrocarbons
Includes but not limited
to:
Methane, Ethane,
Propane, 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,
Propane, Butane,
Pentane
IIB
C & D
Class I, Div 1,2
Zones 0,1,2
Infrared
P/N: 66761
Improved
battery
life,
poison / silicone /
contamination
resistant;
Able to detect
methane in oxygen
depleted
atmospheres
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.
Revision 12
.1