Chemical Adsorption Tasks

To ensure safe operation and reliable results, an evacuation task should be included:

  • between tasks using different gases
  • preceding a leak test

An evacuation will be performed at the analysis temperature for the Pre-analysis Evacuation Time after the last task and before analysis.

Chemical Adsorption Tasks Table
Task Description
Evacuation [selection]

Evacuate for [n] below [n]. The minutes and pressure for preliminary evacuation.

Evacuation rate. The rate for restricted evacuation.

Fast Evacuation. Select for samples (such as pellets) that do not fluidize or shed particles during evacuation.

Gas. Gas used for the evacuation task.

Temperature. The temperature to reach during evacuation.

Temperature rate. Enter the analysis temperature rate.

Unrestricted evac. pressure. The pressure at which unrestricted evacuation is to begin. This option is enabled when Fast evacuation is not selected.

Flow Task [selection]

Flow Rate.The rate at which gas is to flow.

Gas. Gas used for the flow task.

Set external trigger. If selected, the contact closure used to trigger an external Mass Spectrometer or Calorimeter will be activated. If deselected, the contact closure will be deselected.

Temperature. The temperature at which the gas will flow for the specified time.

Temperature rate. Enter the analysis temperature rate.

Time. The duration of time the sample should remain at the specified temperature.

Leak Test Task[selection]

Outgas rate limit. If a measured leak or outgas rate exceeds the entered value, the test will be reported as failed. Analysis will not be canceled.

Temperature. The target temperature for the leak test.

Temperature rate. Enter the analysis temperature rate.

Soak [selection]

Gas. Gas used during the soak task.

Minimum pressure. The minimum pressure to be maintained over the sample during the soak.

Temperature. The temperature at which sample is to be soaked.

Temperature rate. Enter the analysis temperature rate.

Time. The duration of time the sample is to soak at the specified temperature.

 
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