Micromeritics AccuPyc 1330, Руководство оператора

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3. If the system has been open, manually purge the system before proceed-
ing as follows:
a.
Press to open the expansion valve and to close the
vent valve. (The indicator above the key is turned on when the valve
is open.)
b.
Press to open the fill valve and fill the sample chamber to
the desired pressure.
c.
Press to close the fill valve and to open the vent
valve.
d. Repeat this procedure two or three times.
e.
Press to close the expansion valve.
4.
Press to open the fill valve.
5. Fill the sample chamber to 19.5 psig.
6.
Press to close the fill valve.
7. Observe the pressure display. After an equilibration period (about 20 to
30 seconds), the pressure should not vary more than 0.005 psig/min.
•
If the pressure does not vary more than 0.005 psig/min, proceed to step
8.
•
If the pressure varies more than 0.005 psig/min., temperature instability
or a leak may be indicated. Vent the system, then repeat steps 4 through
7 several times to verify that a leak is indicated. If a leak is indicated,
call a Micromeritics Service Representative.
8.
Press to open the expansion valve and to open the fill
valve.
9. Fill the chambers to 19.5 psig.
10. Press
to close the fill valve.
11. Observe the pressure display. After an equilibration period (about 20 to
30 seconds), the pressure should not vary more than 0.005 psig/min.
If the pressure varies more than 0.005 psig/min, temperature instability
or a leak may be indicated. Vent the system, then repeat steps 8 through
11 several times to verify that a leak is indicated. If a leak is indicated,
call a Micromeritics Service Representative.
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AccuPyc 1330 Maintenance
September 1996 5-17