Vial - Agilent Technologies 7697A Advanced Operation Manual

Vial

Advanced Operation
Press [Vial] and edit the vial parameters.
Table 4 Vial parameters
Parameter
Fill mode
Fill pressure
Fill flow
Fill volume, mL
Loop fill mode
Loop ramp fill rate
Method Development
Comments
•
Default: Fill at flow to pressure
•
When the Fill mode is set to Constant
volume, the Loop fill mode is Default. (The
HS must determine the appropriate
parameters.)
•
Press [Mode/Type] to select the vial fill
mode.
See "Pressurizing the vial"
information.
Target sample vial pressure for sampling.
•
The vial pressure must be high enough to
transfer the sample through the sample loop.
•
For some samples, the pressure developed
during equilibration is sufficient for
headspace sampling.
•
Do not exceed any vial pressure limit.
•
Avoid setting a value below the pressure
developed during equilibration.
See "Pressurizing the vial"
information.
Avoid a high flow rate if the change in vial
pressure between the natural internal pressure
after equilibration and the target pressure is
small. See "Pressurizing the vial"
information.
Used only when the Fill mode is set to Constant
volume. The specific volume of gas with which
to pressurize the vial.
•
If using Default, the HS picks reasonable
values for the other loop parameters.
•
If using Custom, the other loop parameters
become enabled for editing.
See "Filling the sample loop"
information.
If in Custom mode, avoid a high fill rate when
the difference between vial pressure and loop
pressure is small. Default value: 20 psi/min.
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