Decagon AquaLab Quick Start Manual - Page 5
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V S A Q u i c k S t a r t G u i d e
the stage settings select "Delete" and press .
• Select the isotherm method as either Dynamic Dewpoint
Isotherm (DDI) or Dynamic Vapor Sorption (DVS). DDI
will create a dynamic isotherm and DVS will create a
static or equilibrium isotherm. The other choices will
adjust based on which method is selected.
• For DDI method
•
To choose the starting
highlighted and then cycle to the desired value using
the up and down arrows. Any value between 0.03
a
and 0.95
can be chosen including "current".
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Choosing "current" means that the stage will start at
a
the initial
of the sample. Press when finished.
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a
•
To choose the final
highlighted and then cycle to the desired value using
the up and down arrows. Any value between 0.03
a
and 0.95
can be chosen including current (see
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"current" definition above). Selecting a final
is lower than the starting
while selecting a final
will result in adsorption. Press when finished.
•
To choose the temperature of the stage, press with
"Temperature" highlighted and then cycle to the
desired temperature using the up and down arrow keys
(hold down arrows for accelerated scrolling). Any
temperature between 15-60°C can be chosen. Each
stage can run at a unique temperature.
•
To choose the desired
"Resolution" highlighted and then cycle to the desired
value using the up and down arrows. Any value
between 0.003 and 1.0
resolution for DDI determines the target
resolution. Setting a higher resolution value will
make the test faster, but will decrease the
resolution. A DDI step of 0.01
•
To choose the air flow rate, press with "Flow"
highlighted, and then cycle to the desired value using
the up and down arrows. Any value between
a
, press with "Start"
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, press with "Final"
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a
that
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a
will result in desorption,
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a
higher than the starting
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a
resolution, press with
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a
can be chosen. The
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a
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a
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a
is recommended.
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Sample Cup
Stainless steel cups are
recommended. Plastic cups
absorb moisture over time.
Weighing Pan
Air Cylinder
Base Block Bore
a
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Figure 4: Sample cup and lower block assembly
• Figure 4: Sample cup and lower block assembly illustrates
the proper positioning of the parts in the lower block. The
air cylinder is placed into the bore of the base block. It
should slide into the block easily and settle at the bottom
of the bore. The weigh pan connects to the scale and
holds the sample cup. For best results, verify cleanliness of
all parts.
V S A Q u i c k S t a r t G u i d e
Sample Cup Lid
Only used for sample storage and
must be removed during tests.