Particulate Systems HPVA Series, Operator'S Manual, Page: 81 / 124

HPVA Series Operator’s Manual System Configuration Window
Mar 2011 5-11
Free Space Tab
Vent Time The amount of time the vent remains open after the third helium
fill/vent cycle.
Vent Expand
Vent Pressure During the adsorption experiment, the system will be considered
vented if at or below this pressure.

Expand Time During the analysis, the system will open valve 1 to dose the
sample for this amount of time before closing the valve and
waiting for equilibration.
Dose
Pressure The pressure the manifold will dose to prior to the free space
analysis. The recommended value is 10 bar.

Tolerance The tolerance of the dosing pressure for the free space analysis

( + this value).

Max Equil Var The system is considered at equilibrium if the pressure does not
vary by more than this pressure during a one minute period.