INFICON LDS3000 Modular Leak Detector - Manual (Page 35)

Operation 35
6.11 Select sample gas
The mass spectrometer module is capable of measuring the following gases:
• Hydrogen (H
2
)
• Mass 3 (H-D,
3
He oder H
3
)
• Helium ( 4 He)
► Select desired mass:
S ETTINGS > M ASS > M ASS
The machine, calibration and sniff factor are dependent on the configured mass and
are saved in the mass spectrometer module.
6.12 Decontaminating backing pump from test gas
The mass spectrometer module can control an electric 24V gas ballast valve of the
backing pump via the O
UTPUT connection.
► Controlling the gas ballast valve using digital outputs.
6.13 Selecting units for leakage rate
For control unit:
► Select desired unit of the leakage rate in vacuum mode:
V IEW SETTINGS > U NITS ( DISPLAY ) > L EAK RATE UNIT VAC
► Select desired unit of the leakage rate in sniff mode:
V IEW SETTINGS > U NITS ( DISPLAY ) > L EAK RATE UNIT SNIFF
For I/O or bus module:
► Select desired unit of the leakage rate in vacuum mode:
S ETTINGS > S ET UP > I NTERFACES > U NITS ( INTERFACE ) > L EAK RATE UNIT V AC
► Select desired unit of the leakage rate in sniff mode:
S ETTINGS > S ET UP > I NTERFACES > U NITS ( INTERFACE ) > L EAK RATE UNIT S NIFF
6.14 Selecting units for pressure
For control unit:
► Select desired unit for the pressure:
V IEW SETTINGS > U NITS ( DISPLAY ) > P RESSURE UNIT
For I/O or bus module:
► Select desired unit for the pressure:
S ETTINGS > S ET UP > I NTERFACES > U NITS ( INTERFACE ) > P RESSURE UNIT