Functional Description - Micromeritics Gemini VII 2390 Service Manual

Gemini VII 2390 Service
This chapter describes the systems and components that comprise the Gemini VII 2390
instrument.
The basic function of the Gemini Series of surface area analyzers is to determine the surface
area of solid materials. Analyses are performed using a static volumetric technique in which
the adsorptive flows into a tube containing the sample and into a balance tube, at the same
time. Even low surface area measurements can be made without the use of krypton.
The Gemini Series analyzers can be operated using a keypad (shown above), or in a Windows
environment. The analyzers are available in three models: the Gemini 2390a, 2390p, and
2390t.
The Gemini 2390a and 2390p are enclosed in the same size cabinet. The only physical
difference is the Po (saturation pressure) tube which is installed on the Gemini 2390p,
allowing continuous measurement of the saturation pressure. A Gemini 2390a can be
upgraded to a Gemini 2390p.
The Gemini 2390t is in a slightly larger cabinet allowing the use of a larger Dewar and longer
sample tubes for extended analyses. This model also is equipped with a Po tube.
Up to four instruments can be installed on one computer (Windows operating system); any
combination of models may be installed.
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2. FUNCTIONAL DESCRIPTION

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