Page 2–34
2101510 Rev. AG
2.16.1 Gas Types
The user can select from one of four sample conditioning modules for installations
whose gas samples do not meet the ideal clean and dry conditions. The following
definitions define what is meant by the condition of natural gas to be sampled.
•
Clean gas is defined as having no particles larger than one micron and no
more than one milligram of solids per cubic meter of gas.
•
Dry gas is defined as having no more than seven pounds of water per million
cubic feet of gas. Gas has less than 0.1 PPM of liquid at the coldest ambient
condition expected at the coldest point in the system. The liquid can be
water, oil, synthetic lubrication, glycol, condensed sample or any other non
vapor contaminate.
•
Stable gas is a vapor containing less than 0.1 PPM of liquid when vapor is
cooled to 18.3
°
F (10
°
C) below the coldest ambient temperature possible at
any point in the system.
Figure 2-24 Available Sample Conditioning Modules
Table 2–10 Sample Conditioning Module Descriptions
Part Number
Description
2102024-001
Designed for sample point distances greater than 10’ (3 m) and less than 150’ (50 m) with
known particulate and liquid contamination. For stable gas samples containing pipe scale
and other solid contaminates and possibly minor amounts of liquid contamination. System
features:
•
Particulate/coalescing filter
•
Liquid/vapor separator
2102494-001
Designed for sample point distance greater than 50’ (15m) and less than 150’ (50m). The
sample gas is known to contain particulate and liquid contamination with a good
probability of line flooding in upset conditions, enough at times to overflow the coalescer
(a+ avenger) filter. It also has a Genie membrane for liquid rejection and a Genie liquid
shut off to be used when liquid carry over would harm the chromatograph if it was
introduced as a sample. This model contains a liquid shut off to protect the GC. The liquid
shut off resets itself when liquids are no longer present.
2102024-001
2102494-001
2104677-001
