1-Cm3 And 2000-Cm3 Units - Micromeritics AccuPyc II 1340 Operator's Manual

AccuPyc II 1340
and equation (9) rewritten as
V
SAMP
Equation (12) then becomes the working equation for the pycnometer. Calibration procedures
are provided to determine V
transducer. Provisions are made for conveniently charging and discharging gases at controlled
rates, for optimizing the relative sizes of the sample chambers and expansion volumes, and for
cleansing the samples of vapors.
3
1-cm and 2000-cm
3
The 1-cm and 2000-cm
ple cell remains at ambient pressure. After P
allow gas to expand into the sample chamber and P
For the 1-cm
P V
1 EXP
and equation (2) becomes

P V
a CELL
A derivation similar to that above yields the working equation for the 1-cm
V
SAMP
June 2013
V
EXP
------------------ -
= V –
CELL
P
1g
------- -
– 1
P
2g
and V
CELL
3
Units
3
pycnometer operate by filling the expansion chamber while the sam-
3
pycnometer, equation (1) becomes
= n RT
E a

– V = n RT
SAMP C a
P

1g
------- -
= V – V

CELL EXP
P
2g
and the pressures are measured by a gauge pressure
EXP
is equilibrated, the expansion valve opens to
1
is equilibrated.
2

– 1

Appendix C
(12)
3
pycnometer.
C-3