Micromeritics Gemini VII 2390a, Operator'S Manual, Page: 124 / 426

Analysis Conditions Files Gemini VII
5-14 239-42828-01 - Dec 2012
Insert Predefined
button Insert Predefined button
- this button is disabled if
Absolute pressure
dosing
is selected on the previous window. The predefined pressures are
logical only if nitrogen is used as the adsorptive. These options can be used
to select the system’s default pressures which can then be edited on the
Entered Pressures window.
Click the dropdown arrow to select predefined pressure points for surface
area, t-Plot micropore, and/or BJH adsorption/desorption.
Select
Adsorption total pore volume
,
Desorption total pore volume
,
and/or
Saturation
to include them in the
Entered Pressures
table.
Preparation button
Click to enter analysis preparation details.
•
Evacuation rate -
enter the evacuation rate at which unrestricted
sample evacuation is to begin.
•
Evacuation time -
enter the length of time for preliminary evacuation
which takes place prior to the free space measurement or sample
analysis if free space is to be Entered or Calculated.
Field or Button Description (continued)