Micromeritics AccuPyc 2 1340, Руководство оператора

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AccuPyc II 1340 Verifying Operation
June 2013 2-15
Verifying Operation
This section provides instructions for performing an analysis on the calibration standard(s) to
verify operation of your AccuPyc. You do not have to edit set-up values; the same values used
in the calibration will be used in the analysis.
1. Press Alt + 4 ; a prompt similar to the following is displayed:
2. Press ENTER to begin the analysis. When the analysis has finished, the system
automatically returns to the Reload prompt.
3. Press CHOICE to view the average volume and standard deviation.
4. Compare the value displayed for the average volume to the value recorded on the top of
your calibration kit. These two values should agree plus or minus the variance obtained
using the following calculation:
Variance = (chamber volume * 0.0003) + (Value recorded on Standards case * 0.0003)
If the values do not agree, a leak is indicated. Refer to Checking the Cell and Expansion
Chambers for Leaks , page 5-7 and test the system for leaks. Then repeat steps 1 through
3. If the values continue to disagree, contact your service representative.
5. Press
Alt + 6
to print a hard copy of the report for your records.
6. Remove the standard(s) and place them back into the case.
It is recommended that you read Chapter 3, User Interface before performing analyses. This
will familiarize you with the hardware and software of the AccuPyc.
Example : calculate the variance for a 10-cm
3
pycnometer with a value of
6.372242 recorded on the case as follows:
Variance = (10 * 0.0003) + (6.372242 * 0.0003) = 0.003 + 0.0019116726 = 0.005
Unit[n] SN1234 10 cm3
Analyze
[ENTER] to start
[ESCAPE] to cancel
Unit[n] SN1234 10 cm3
X - X - X
Avg Vol = (volume)
Std Dev = (deviation)