Micromeritics Gemini VII 2390a, Operator'S Manual

Page: 133 / 426

Gemini VII Report Options Files
239-42828-01 - Dec 2012 5-23
Options buttons
(continued)
•
Autoscale X-axis -
linear X-axes begin at zero. Logarithmic X-axes
begin at an appropriate value. The X-axis field shows the relative or
absolute pressure.
•
Autoscale Y-axis -
Y-axes begin at zero. The Y-axis field shows the
quantity of gas adsorbed.
Tabular Options

group box
Select the options to include on the report.
•
Weight %
- enter the weight percentage when plotting pressure
composition.
•
Elapsed time -
time elapsed during the analysis.
•
Time between points -
time elapsed between points during the
analysis.
Plot Options

group box
Select the type of isotherm to plot (adsorption or desorption).
Quantity Adsorbed

group box
Select how to report the quantity adsorbed.
•
Per gram
(cm
3
/g)
•
Per BET Surface Area
(cm
3
/m
2
)
•
Per other Surface Area
(cm
3
/m
2
)
Weight group box
Enabled when the
Pressure Composition plot
checkbox is selected on the
Isotherm Report Options
window.
•
Adsorbate Molecular Weight
- this plot is useful for plotting pressure
as a function of Weight % adsorbed (i.e. H
2
adsorbed on carbon).
Cancel button
OK button
Refer to
Common Fields and Buttons - File Menu Options
, page
5-1
.
Field or Button Description (continued)