Micromeritics AccuPyc 1330 Operator's Manual page 95

AccuPyc 1330
Since P
pressures and equation (9) is arranged so that P
and P
and equation (9) rewritten as
Equation (12) then becomes the working equation for the pycnometer. Calibra-
tion procedures are provided to determine V
are measured by a gauge pressure transducer. Provisions are made for conven-
iently charging and discharging gases at controlled rates, for optimizing the
relative sizes of the sample chambers and expansion volumes, and for cleans-
ing the samples of vapors which would render equations (1), (2), and (3) in-
adequate to describe behavior.
September 1996
, P , and P are expressed in equations (1) through (9) as absolute
1 2 a
before use, new P and P
2 1g
− P
= P
P
1g 1 a
− P
= P
P
2g 2 a
= V −
V
SAMP CELL
is subtracted from both P
a
may be redefined as gauge pressures
2g
V
EXP
P
1g − 1
P
2g
and V
CELL
APPENDIX B
1
(10)
(11)
(12)
and the pressures
EXP
B-3