Decagon AQUA LAB VSA, Быстрый старт

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V S A Q u i c k S t a r t G u i d e
• For DDI method
•
To choose the starting a
w
, press with “Start”
highlighted and then cycle to the desired value using
the up and down arrows. Any value between 0.03 and
0.95 a
w
can be chosen including “current”. Choosing
“current” means that the stage will start at the initial a
w
of the sample. Press when finished.
• To choose the final a
w
, press with “Final” highlighted
and then cycle to the desired value using the up and
down arrows. Any value between 0.03 and 0.95 a
w
can
be chosen including current (see “current” definition
above). Selecting a final a
w
that is lower than the
starting a
w
will result in desorption, while selecting a
final a
w
higher than the starting a
w
results 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). You may
choose any temperature between 15 and 60 °C, 25 °C is
default. Each stage can run at a unique temperature.
•
To choose the desired
a
w
resolution, highlight
“Resolution” press with “Resolution” highlighted and
then cycle to the desired value using the up and down
arrows. You may choose any value between 0.003
and 1.0
a
w
. The resolution for DDI determines the target
a
w
resolution. Setting a higher resolution value makes
the test faster, but decreases the
a
w
resolution. We
recommend a DDI resolution of 0.01
a
w
.
•
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
10-163 ml/min can be selected. Higher flow rates will
speed up the test, but may result in lower data
resolution and non-equilibrium conditions. The
default value of 100 ml/min is suitable for most
products.