Installing The Mechanical Components; Installing The Analyzer; Location And Environment - Ametek 241CE II Operator's Manual

Installing the Mechanical Components

3-6 | Model 241CE II Hydrocarbon Dewpoint Analyzer
See Figures 3-1 and 3-2 for mounting and installation details. If your appli-
cation uses an optional, external water signal, specific installation require-
ments can be found in the section "External Water Dewpoint/Content
Option" in Appendix A. Drawings can be found in the Documentation
Package shipped with the analyzer.

Installing the Analyzer

The analyzer comes mounted on a backpan. See Figure 3-1 for the back-
pan and mounting hole locations and dimensions, plus necessary clear-
ances on all sides (required for service). If your system includes Final
"As-Built" drawings (see Documentation Package), use those drawings.

Location and Environment

The Model 241CE II Analyzer is designed for indoor operation (Pollution
Degree 2). 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 (4) 5/16" or M8 (or larger) fasteners through the (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.
NOTE
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 vicin-
ity of the analyzer, with no rapid fluctuations. Due to the low flow rate
and sintered metal flame arrestors, the sample gas temperature will be at
or very close to ambient temperature.
Since the HCDP temperature of some natural gas streams can fluctuate
significantly, the ambient temperature must be carefully chosen. Within
this range, a higher temperature will limit the minimum dewpoint tem-
perature that the analyzer can cool down to, while a lower temperature
may require longer purging times to clean condensate from within the
Measuring Cell.