GA5000 Gas Analyzer
OMGA5KN4.6
Page
53
of
73
dioxide. Therefore, the carbon dioxide reading will not be affected by any other gases
usually found on landfill sites.
The oxygen sensor is a galvanic cell type and suffers virtually no influence from CO
2
, CO,
H
2
S, NO
2
, SO
2
or H
2
, unlike many other types of oxygen cell.
The infrared sensors will not be ‘poisoned’ by other hydrocarbons and will revert to
normal operation as soon as the gas sample has been ‘purged’.
H
2
S filter:
Instructions for use:
The following diagram shows how to modify the standard water trap and sample tubing
to fit the H
2
S filter.
Note:
When onsite the site engineer must have an unmodified water trap assembly
in addition to the modified water trap with a H
2
S filter in order to take
readings with and without a filter.
1)
Once the H
2
S filter is fitted follow the instructions as detailed on the front of the gas
analyzer displayed when taking readings using a H
2
S filter.
Note:
This is only for analyzers fitted with the CO compensated cell.
Sample
Point
Sample
Tubing
Cut the
Sample
Tubing
Water
Trap
Insert
H
2
S
Filter
Gas Port
Connector
Standard Water Trap and Sample Tubing
Modified Water Trap and Sample Tubing with H
2
S Filter
