When using low throughputs and searching for leaks commonly the volume throughput qpV in pV-Units for stating the leakrate is used. Moreover the type of gas and the temperature have to be considered. 1
This table shows the unit conversion factors when usinf different volume or mass throughput units. For this conversion standard state of the gas is considered.
| UNIT | mbar 1/s | Pa 1/s | Torr 1/s | lusec | cm3/s | cm3 /hour | kg/hour Air | g/year RI2 |
|---|---|---|---|---|---|---|---|---|
| mbar 1/s | 1 | 100 | 0.75 | 751 | 1 | 3560 | 4.3E-3 | 1.55E5 |
| Pa 1/s | 0.01 | 1 | 7.5E-3 | 7.51 | 0.99E-2 | 35.6 | 4.3E-5 | 1.55E3 |
| Torr 1/s | 1.33 | 133 | 1 | 1000 | 1.32 | 4738 | 5.7E-3 | 2.1E5 |
| lusec | 1.33E-3 | 0.133 | 1E-3 | 1 | 1.32E-3 | 4.74 | 5.7E-6 | 2.1E2 |
| cm3/s | 1.01 | 101 | 0.76 | 759 | 1 | 3600 | 4.3E-3 | 1.55E5 |
| cm3 /hour | 2.81E-4 | 2.81E-2 | 2.11E-4 | 2.11E-1 | 2.7E-4 | 1 | 1.21E-6 | 4.30E1 |
| kg/hour Air | 230 | 23000 | 175 | 1.75E5 | 230 | 8.29E5 | 1 | - |
| g/year R12 | 6.4E-6 | 6.4E-4 | 4.90E-6 | 4.80-3 | 6.4E-6 | 2.3E-2 | - | 1 |
Umrechner:
Annotations, Anmerkungen
- Jousten, Karl (Hrsg.): Handbuch Vakuumtechnik. Vieweg+Teubner Verlag, 2006. ISBN 383480133X, 9783834801333, Seite 751[↩]