Instruction Manual

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 > MASS > MASS
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 > UNITS (DISPLAY) > LEAK RATE UNIT VAC
► Select desired unit of the leakage rate in sniff mode:
V
IEW SETTINGS > UNITS (DISPLAY) > LEAK RATE UNIT SNIFF
For I/O or bus module:
► Select desired unit of the leakage rate in vacuum mode:
S
ETTINGS > SET UP > INTERFACES > UNITS (INTERFACE) > LEAK RATE UNIT VAC
► Select desired unit of the leakage rate in sniff mode:
S
ETTINGS > SET UP > INTERFACES > UNITS (INTERFACE) > LEAK RATE UNIT SNIFF
6.14 Selecting units for pressure
For control unit:
► Select desired unit for the pressure:
V
IEW SETTINGS > UNITS (DISPLAY) > PRESSURE UNIT
For I/O or bus module:
► Select desired unit for the pressure:
S
ETTINGS > SET UP > INTERFACES > UNITS (INTERFACE) > PRESSURE UNIT