Checking The Cell And Expansion Chambers For Leaks - Micromeritics AccuPyc 1330 Operator's Manual

Maintenance
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Checking the Cell and Expansion Chambers for Leaks

To check the cell and expansion chambers for leaks perform the following
procedure.
This procedure should be performed in a temperature-stable environ-
ment after the pycnometer has been warmed up for at least two hours.
Before performing this procedure, check the chamber cap to ensure that
it is not the source of leaks. It should be free from particles, the O-ring
should be properly seated, and it should not contain excessive grease.
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2.
5-16
Clean the groove in the chamber cap using a small brush or lint-free tis-
sue and isopropyl alcohol.
Figure 5-3. Cleaning the Chamber Cap
Allow the chamber cap to dry thoroughly.
Grease the O-ring using Dow Corning vacuum grease (or equivalent).
Replace the O-ring, being careful not to nick or scratch it.
Allow the pycnometer to equilibrate thermally in a room having a stable
temperature.
Press 1 to enter manual mode.
AccuPyc 1330
September 1996