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Description
14
GA10218_002_A7 - 9/2015 - © Oerlikon Leybold Vacuum
opens step by step. When valve V4b is open completely, pressure < 0,1 mbar, V4a
will open also to get the maximum pumping speed. In PRECISION mode the
PHOENIX L300i DRY opens the valve V4b only, with the disadvantage of low
pumping speed but with the highest sensitivity.
When the leak detection process is stopped – STOP-button – all valves except
valve V2a are closed.
Valve V3 is opened during venting of the inlet or test sample.
1.1.5 Partial Flow Method
In the partial flow mode the test sample is additionally evacuated by an auxiliary
pump. Using the optional partial flow pump set offers to the user the following
advantages (PHOENIX L300i
and PHOENIX L300i MODUL:
- faster response time
- entry into the measure mode already at an inlet pressure of 1000 mbar
- faster venting of large test objects
Alternatively to a partial flow pump set an external auxiliary pump may also be con-
nected via a tee, this option is possible for the PHOENIX L300i dry and PHOENIX
L300i MODUL also. However, in such a case the PHOENIX L300i will not be able to
make measurements already at an inlet pressure of 1000 mbar.
1.1.6 Sniffer Mode
The PHOENIX L300i may simply be converted into a sniffer leak detector via the
rugged sniffer line (Cat. No. 252003)
For this the KF flange of the sniffer line is connected to the inlet flange (Fig. 1/1) and
the sniffer mode is selected through menu mode. After pressing START, the inlet
valve V1 (Fig. 2) opens. The sniffer lines have been designed in such a way that the
PHOENIX L300i is operated in the FINE mode. If the fore vacuum pressure P2
increases over 0,2 mbar respectively 0,1 mbar a warning sign and audio alarm
comes up in the display
In the measurement mode the helium present in the ambient air is now indicated as
the leak rate (about 2 · 10
-6
mbar l/s). Smaller leaks may be detected by pressing
the ZERO-button. In sniffer mode the smallest detectable leak rate is < 1· 10
-7
mbarl/s.
1.2 Supplied Equipment
The PHOENIX L300i will be shipped in a special cardboard packed separately in a
plastic foil as protection against dust.
Supplied equipment includes:
Leak Detector PHOENIX L300i
Set of fuses
Power cord
Folder with documents (Operating instructions, Spare part list)
2 L-type screwed connections (hose connections)
1 hose nozzle
Blank flange DN 25 KF
Clamping ring DN 25 KF
Centering ring DN 25 KF