Ametek 931S, Руководство оператора

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Installation and Start-Up | 3-5
Installing the Mechanical Components
Install the analyzer in its designated location before installing the
Optical Bench in the Ex d Upper Enclosure.
Installing the Analyzer
The analyzer system comes mounted on a backpan. See Figure 3-1 for the
backpan and mounting hole locations and dimensions, plus necessary
clearances on all sides that are required for service. For your system, refer
to Final “As-Built” drawings in the analyzer Documentation Package.
Location and Environment
The Model 931S and Model 932S Analyzers are 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 ele-
ments. The entire analyzer 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.
Regardless of which installation method is used, be sure to install the
analyzer in a location that is as free as possible from vibrations.
The surrounding ambient temperature of the analyzer must be between
0 °C and 50 °C (32 °F and 122 °F). In high dewpoint applications, a heated
Measuring Cell and heat-traced Sample/Vent Lines must be used to pre-
vent condensation of liquids in the sample system. If the analyzer system
is mounted within an AMETEK-designed shelter, these conditions are
taken into consideration in the design of shelter.
Install the analyzer at an accessible location as close as possible to the sam-
ple extraction point to minimize sample response time and, if the Sample
Line must be heated, minimize the heating requirements.

NOTE
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CAUTION