Micromeritics ACCUPYC III Operator's Manual page 58

2 About the Software
O
PERATIONS
Runs other instrument operations that are not an analysis or calibration.
These functions should be run in the following order:
1. Perform a Leak Test after connecting the gas line to the regulator and the instrument.
2. Set the regulator pressure until the low pressure gauge reaches 22 psig (152 kPag).
3. Purge the gas line and confirm that the regulator pressure has not changed.
Operations
Operation Name
Leak Test
2 - 28
Description
Checks unit for gas leaks. This should be done as a periodic check or
as a diagnostic in the case of unexpected results or errors.
This test should be performed in a temperature-stable
environment after the pycnometer temperature has been
allowed to equilibrate for at least two hours. Before per-
forming this test, 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.
Ensure the regulator pressure is set to 22 psig (152 kPag) before
n
starting this test.
AccuPyc III Operator Manual
135-42800-01 (Rev -) — Nov 2023