High Pressure Differential Analysis

If using a blank correction file as the correction method, the correction file must exist before the sample data file can be completed (since a blank correction file must be selected when the sample file is created).

If a blank analysis has not been performed in advance, run a differential analysis of the sample and the corresponding blank simultaneously. The application associates the sample file with the blank correction file after the analysis is completed.

An advantage of using differential analysis is that both the sample and blank penetrometers are subjected to nearly identical conditions (time, temperature, and pressure). Properly used, the differential analysis option provides the most accurate low porosity sample data possible.

  1. Create a sample file. Also create a sample file for the blank penetrometer using Nonefor the correction method. See Sample Files .
  2. Run the low pressure analysis on both files. See Perform a Low Pressure Analysis.
  3. To start the high pressure analysis, select either the Differential, Blank in port 1 or Differential, Blank in port 2. Perform a high pressure analysis. See Perform a High Pressure Analysis.
 
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