Calculations; Saturation Pressure (Po; Relative Pressure - Micromeritics ASAP 2020 Confirm Operator's Manual

Appendix C

Saturation Pressure (Po)

Po method is selected by the user on the Po and Temperature Options dialog. It may be
entered, measured, or calculated from temperature.
If entered, Po = user entered value
If measured, Po = equilibrated pressure reading after saturating Po tube
If calculated from temperature, interpolate Po from the Psat vs Temperature table on the Po
and Temperature Options dialog box, given the analysis bath temperature

Relative Pressure

If Po was measured:
For points taken before the previous Po measurement,
Po
For points taken after the previous Po, use the previous Po:
Po
I
If Po was entered, use the entered Po:
Po
I
If Po was calculated, use the calculated Po:
Po
I
Calculate relative pressure for the I
P
rel
202-42811-01 - Mar 2011
C. CALCULATIONS
 
Po – Po
2 1
----------------------------------------------------------- -
= Po +
I 1

To –
2
= Po
1
= Po
E
= Po
C
P
1
------- -
=
Po
1
I
  
T – To
I 1

To
1
th data point:
ASAP 2020 Confirm
C-1