PN 903-8797, Rev A
Installing the Mechanical Components
See Figures 2-1 and 2-2 for mounting and installation details. If your applica-
tion uses an optional, external water signal, specic installation requirements
can be found in the section “External Water Dewpoint/Content Option” in Ap-
pendix A.
Installing the Analyzer
The analyzer comes mounted on a backpan. See Figure 2-1 for the backpan
and mounting hole locations and dimensions, plus necessary clearances on
all sides (required for service). If your system includes Final “As-Built” drawings
(see Documentation Package folder shipped with the analyzer), use those
drawings.
Location and Environment
The 241CE II Analyzer is designed for indoor operation (Pollution Degree2).
In all cases, the analyzer system must be installed indoors to ensure it is
shielded from harsh environmental elements. The entire ana lyzer system (and
its backpan) can be mounted directly on a wall inside a building, in a specially
designed cabinet, or in a custom-built shelter.
Attach the analyzer/backpan to a metal structure capable of supporting its
weight. Use four (4) 5/16" or M8 (or larger) fasteners through the four (4) holes
on the backpan.
Regardless of which installation method is used, be sure to install the
analyzer in a location that is free from vibrations.
For hazardous location safety, ambient temperature may be from 0 °C to
+40°C (32 °F to 104 °F). For measurement accuracy, the temperature of the
analyzer and its sample system must be at least 15 C° (27 F°) above the highest
expected hydrocarbon dewpoint temperature. It is also extremely important
to maintain a relatively stable ambient temperature in the vicinity of the ana-
lyzer, with no rapid uctuations. Due to the low ow rate and sintered metal
ame arrestors, the sample gas temperature will be at or very close to ambient
temperature.
Since the HCDP temperature of some natural gas streams can uctuate signi-
cantly, the ambient temperature must be carefully chosen. Within this range,
a higher temperature will limit the minimum dewpoint temperature that the
analyzer can cool down to, while a lower temperature may require longer
purging times to clean condensate from within the Measuring Cell.
2-6 | 241CE II Hydrocarbon Dewpoint Analyzer
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