Calibrate the Penetrometer
Unit [n] > Calibrate Penetrometer
Up to 4 penetrometers can be calibrated simultaneously.
To have the application determine sample density or if blank correction by formula will be used, the calibrated empty volume of each penetrometer must be entered in the Penetrometer Properties file. The file can then be selected and used for analyses.
- For each penetrometer to be calibrated, click the drop-down arrow to the right of the Penetrometer field and select a Penetrometer Properties file. If this is a new penetrometer, a new Penetrometer Properties file must be created for each new penetrometer, then select the Penetrometer Properties file from the drop-down list. A new Penetrometer Properties file can be added by clicking Browse from the drop-down list and entering the new file name. See Penetrometer Properties.
- Verify that the Empty mass field contains the correct information for each file selected. If necessary, modify the field. The Fill button is disabled unless at least one port has a penetrometer selected, and until each port with a penetrometer has an Empty Mass value greater than (not equal to) 1.0000.
- In the Mercury Density group box, select either Enter density to manually enter the mercury density in the text box or select Calculate from the measured temperature to use the temperature and density entered in the table.
To modify the table parameters, click in the appropriate cell and enter the new parameter.
- Prepare and load the penetrometers as for a low pressure analysis (see Perform a Low Pressure Analysis). Click Fill and wait for the operation to complete, then weigh the penetrometers and enter the Full Mass for each. The Measurements Completed field will update to include the measurement just finished. The Full Mass fields will be initialized to 1.0000. The Repeat and Accept buttons will be disabled until all selected ports have a Full Mass greater than their Empty Mass. When a valid Full Mass is entered, the penetrometer volume for this measurement is calculated and the Mean Volume and standard deviation for all measurements are updated.
- Repeat these steps as many times as needed (three times are recommended). The system will automatically calculate the Mean Volume and report it. Click Accept when finished. The Mean Volumes will be stored in the selected Penetrometer Properties files.
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