PS200
PORTABLE GAS MONITOR
OPERATING PARAMETERS & SENSOR TYPES
64171, Rev. 11/December 2019
A-2
A.2. LEL Sensor Types
There are several LEL sensor types available for the monitor. The following table shows the bene
-
fits 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 resis
-
tance
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.