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Head
67
⏐
GA10218_0101 - 5/2002
Fore pump for the PhoeniXL
300 Modul
:
6.6.1.5 Sniffer factor
Main menu > Settings > Vacuum settings > Sniffer factor
The sniffer factor takes into account, after an internal calibration, an exter-
nal partial flow ratio, for example the Quicktest or a auxiliary pump with
sniffer line connected via teepeace to the leak detector.
During an internal calibration the internal sensitivity of the PhoeniXL is cali-
brated. The calculated number is multiplied with the sniffer factor and the
result is the sniffer factor for this application.
6.6.1.6 Machine factor
Main menu
>
Settings
>
Vacuum settings
>
Machine factor
The machine factor takes into account, after an internal calibration, the
ratio between the effective helium pumping rate of the PhoeniXL and the
pumps in the pump system in measurement mode as well as the measu-
rement mode used (GROSS/FINE).Based on an internal calibration only,
all measured leak rate would be measured too small. The measured leak
rate is multiplied with the machine factor and the result is displayed. This
factor is only used for vacuum measurement modes (not for sniff mode).
See Chapter
4.1.2.7
Numerical Entries
for the description of the entry.
Softkey 2:
↓
The entry of the nominal pumping speed of the partial flow pump can be
decreased. The minimum pumping speed is 4 m
3
/h.
Softkey 3: Fore pump type
The PhoeniXL
300 Modul
can be operated with a dry fore pump (for ex.
Scroll pump) or a wet fore (oil sealed) pump.
This key is for choosing a dry (Sroll, piston) fore vacuum pump.
Softkey 5: ?
Help text
Softkey 6:
↑
The entry of the nominal pumping speed of the partial flow pump can be
increased. The maximum pumping speed is 80m
3
/h.
Softkey 7: Fore pump type
The PhoeniXL
300 Modul
can be operated with a dry (for ex. Scroll pump)
fore pump or a wet (oil sealed) pump.
This key is for choosing a wet (oil sealed) fore vacuum pump.
Softkey 4: Set default value
Setting between the default value 1 for the sniffer line SL300 or the cor-
rection factor (1000) for the use of the Quicktest.