Maintenance
96
GA10218_002_A7 - 9/2015 - © Oerlikon Leybold Vacuum
manual of the turbo pump (GA 05156.0101) or contact your local Leybold service.
4.5 Calibrated Leak TL7
The Calibrated leak TL7 with the helium reservoir is used for alignment of the mass
spectrometer in the PHOENIX L300i as well as for calibration the leak rate indica-
tion.
It is equipped with a solenoid valve which is actuated via the control electronics of
the PHOENIX L300i.
4.5.1 Technical Data
4.5.2 Factory Inspection
Calibrated leaks are not subject to wear and the Helium loss of the calibrated leak
TL7, being less than 2 % per year, is negligible. Nevertheless, the leak rate may
change over years due to external influences. A factory inspection is, therefore,
advisable once a year.
A test certificate, if required for the Helium calibrated leak, can be obtained from
our Cologne Works. In that case, the calibrated leak should be forwarded to us and
will be returned inspected and recertified with the test certificate against charge.
The helium flow stated on the main label is the actual leak rate of the calibrated
leak.
Nominal calibration range
10
-7
mbarl / s
Tolerance of nominal calibration range
+/- 15 %
Temperature coefficient
< 0,5 %/°C
Leak type
Capillary
Filling
Helium
