Perform a Sample Analysis

 

Before beginning an analysis, ensure the tank pressure for the gas regulator is at least 200 psig. Pressures less than 200 psig may cause the sample to be inadequately saturated, resulting in inaccurate data or termination of analysis.

Ensure that the analysis gas and the Psat gas (if used) specified in the sample file match the system configuration gases; if they do not, correct the sample information file or correct the unit configuration gas. See Unit Configuration .

Evacuation through the Unit > Evacuate Port option can be performed on any idle port while analyses are in progress.

Standard Analysis Guidelines
  • Standard analyses cannot be performed if a high throughput or krypton analysis is in progress.
  • One analysis can be started at a time.
  • A sample can be added to any idle port and an analysis started without disturbing the analyses being performed on other ports.
  • Samples can be removed from any of the six ports without disturbing the analyses being performed on other ports.
  • The sample dosing method should be Normal.
  • All analyses must use the same gas.
  • If saturation pressure is being measured, all analyses must use the same Psat gas.

Sample Analysis
Field or Button Description
Port Select the port to be used for the analysis.
Density / Mass /
Sample + Tube /
Empty Tube [text box]
Enter values for the sample’s mass and density. These values may be edited after analysis.
New [button] Creates a new sample file.
  For fields and buttons not listed in this table, see Common Fields and Buttons.

Sample Analysis Graph
Field or Button Description
Live Graph Settings
[button]
Select Thermal transpiration, x-axis Quantity (relative or absolute pressure), and the x-axis Scale (linear or logarithmic).
Report after analysis [button] Generates reports to the selected destination when the analysis is complete.
Report Port [button]

Generates a report on data being collected . The reports are displayed on the computer monitor only.

Resume [button] Restarts the suspended analysis.
Skip [button] Moves to the next step. Select the ports to skip.
Status window Displays the last point pressure and relative pressure for each port.
Suspend [button] Suspends an analysis in progress.
  For fields and buttons not listed in this table, see Common Fields and Buttons.