Degas Conditions

Or, click the Degas Conditions tab when using Advanced option presentation.

  In 21CFR11 environments, this section is applicable only to members of the Developer group; however, members of the Analyst group may find information in this section helpful. Parameter file information that is available to Analysts is created by a member in the Developer group using information in this section.
 

Use this option only when the Smart VacPrep is installed. Degassing is a required step in preparation for an analysis. The Degas Conditions tab provides settings that will be automatically applied during the degassing procedure when using the Smart VacPrep.

If using a FlowPrep or a VacPrep use the heating phase section for reference only.

The Degas Conditions tab displays only if enabled in Options > Option Presentation > Show Degas Conditions.

The Smart VacPrep Operator Manual can be found on the Micromeritics web page (www.Micromeritics.com).

Degas Conditions
Field or Button Description
Copy QuickStart degas conditions from Smart VacPrep Unit [drop‑down box] Use to copy the degas conditions settings from the selected Smart VacPrep unit and port.
Degas conditions [drop‑down box] Use to browse for a .DEG file that contains degas condition parameters to be used in the analysis.

Heating Phase [table]

This option is applicable when degassing with a Smart VacPrep .

Enter up to five stages of degas conditions.

Temperature. Temperature at which the sample is to be held while degassing.

Time. How long the sample is to be held at the specified temperature before beginning to cool down.

Temperature Ramp Rate. The rate at which the temperature will change while advancing to the hold temperature.

Smart VacPrep
Evacuation [group box]

Backfill sample tube. Indicate if the sample tube should be backfilled automatically or wait for operator response.

Evacuation rate. Rate used for evacuation.

Evacuation time. Length of time for preliminary evacuation before proceeding with the Heating Phase temperature schedule. The timer starts when the vacuum level is reached.

Hold pressure. Pressure at which heating will stop and hold the sample temperature approximately constant until the pressure falls below the Hold pressure. This prevents damage to the sample structure due to 'steaming' and /or elutriation due to excessive escaping gas velocity.

Target temperature. Targeted temperature for evacuation.

Temperature ramp rate. Rate at which the temperature is to change when advancing to the target pressure.

Unrestricted evac. from. Pressure at which the unrestricted evacuation is to begin.

Vacuum level. Evacuation time starts when the vacuum level is reached.

  For fields and buttons not listed in this table, see Common Fields and Buttons.