Valves 1, 2, 8, 9, 10, 11, And Pv - Micromeritics ASAP 2020 Confirm Operator's Manual

Appendix D

Valves 1, 2, 8, 9, 10, 11, and PV

Valves 10 and 11
1. Open valve PV; wait 5 minutes (Valves PS and 5 should be open.).
2. Open valve 7; allow the system to evacuate to 10 mHg.
3. Close valves PV, PS, and 5.
4. Open valves 1 and 2; allow the system to evacuate for 30 minutes.
Valves 1, 2, and 7 should be the only valves open at this time.
5. Remove the Po tube.
6. Take a pressure reading; record it as P1 for valves 10 and 11.
7. Wait 10 minutes and take another pressure reading; record it as P2 for valves 10 and 11.
8. Subtract P1 from P2 and divide the difference by 10; record this value as the outgassing
rate for Valves 10 and 11. This value should be less than 0.7 mHg/min.
Valve 9
9. Remove the sample tube from the analysis port.
10. Take a pressure reading; record it as P1 for valve 9.
11. Wait 10 minutes and take another pressure reading; record it as P2 for valve 9.
12. Subtract P1 from P2 and divide the difference by 10; record this value as the outgassing
rate for valve 9. This should be less than 0.7 mHg/min.
Valve 8
13. With valve 8 closed, remove the plug from the vapor inlet port on the side of the analyzer.
If the vapor accessory is installed, disconnect it from the analyzer.
14. Take a pressure reading; record it as P1 for valve 8.
15. Wait 10 minutes and take another pressure reading; record it as P2 for valve 8.
16. Subtract P1 from P2 and divide the difference by 10; record this value as the outgassing
rate for valve 8. This value should be less than 0.7 mHg/min.
17. Before proceeding, reinstall the sample tube, the Po tube, and the plug from the vapor inlet
(or the vapor accessory).
202-42811-01 - Mar 2011
ASAP 2020 Confirm
D-5