Micromeritics ASAP 2460, Operator'S Manual

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ASAP 2460 Operator’s Manual Appendix C
246-42800-01 - Aug 2013 C-5
Calculated
The calculated free space is determined by subtracting the gas capacity of the volume occupied by the
sample from the measured free space of the empty tube.
where
T
amb
= approximate room temperature (298 K)
T
bath
= analysis bath temperature ( K )
T
STD
= standard temperature (273.15 K)
V
cb
= cold free space of the empty tube
V
fc
= calculated cold free space
V
fw
= calculated warm free space
V
s
= sample mass/density
V
wb
= warm free space of the empty tube
V
fw
V
wb
V
s
T
STD
T
amb
------------
 
 
– =
V
fc
V
cb
V
s
T
STD
T
bath
------------
 
 
– =